Learn about Ford Focus Electric (US) (2015-2018) fuse box and relay’s locations, functions, and maintenance tips for optimal vehicle electrical system.
The Ford Focus Electric continued through the 2015–2018 model years, offering an all-electric option within Ford’s compact Focus lineup for US drivers. While it shares its body structure and much of its interior with the standard gasoline Focus, the Focus Electric incorporates specialized components for battery management, charging, and electric propulsion, in addition to the conventional fuses and relays that protect everyday electrical systems.
Fuses and relays continue to play a critical protective role, shielding circuits such as interior lighting, infotainment, and climate control from power surges and short circuits. If you notice issues like a non-responsive touchscreen, malfunctioning power windows, or dashboard warning lights related to charging, checking the low-voltage fuse box is a sensible first step, while keeping in mind the additional safety considerations unique to electric vehicles.
This guide covers the fuse box and relay locations for the 2015–2018 Ford Focus Electric (US), along with important safety precautions specific to EVs.
MUST READ: DYI – How to Check Car Fuses?
(2015-2018) Ford Focus Electric (US) fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Ford Focus Electric (US) (2015-2018) fuse assignment
Ford Focus Electric (US) Year of production: 2015, 2016, 2017, 2018
Where Are the Fuse Boxes Located on the Ford Focus Electric?
The Focus Electric uses two main low-voltage fuse box locations: one in the front compartment (where a traditional engine would normally be) and one inside the cabin. Since this is an electric vehicle, the front compartment houses electric drive components alongside the low-voltage fuse box rather than a combustion engine.
1. Front Compartment Fuse Box (Power Distribution Box)
The primary low-voltage fuse box is located in the front compartment, positioned near the 12-volt auxiliary battery, typically on the driver’s side.
How to access it:
- Open the front hood and locate the black plastic cover near the 12V auxiliary battery.
- Unclip or unscrew the retaining tabs securing the cover.
- Lift the cover straight up to expose the fuses and relays inside.
This fuse box manages the vehicle’s low-voltage (12V) circuits, including headlights, horn, wipers, and cooling fans that support the battery thermal management system. This box does not contain fuses related to the high-voltage main drive battery, those are managed separately by a sealed high-voltage system not intended for owner access.
2. Interior Fuse Panel (Instrument Panel Fuse Box)
The cabin fuse box is located inside the vehicle, typically under the dashboard on the driver’s side, near the left kick panel area.
How to access it:
- Sit in the driver’s seat and locate the small access panel to the left of the steering column, near the door.
- Gently pull or unclip the cover, it’s usually secured with simple plastic retaining clips.
- Once removed, you’ll see the fuse layout along with several compact relays.
This panel controls circuits such as interior lighting, the SYNC infotainment system, power windows, wipers, and dashboard displays, including EV-specific battery charge, range, and charging status indicators.
3. High-Voltage System Components (Not User-Serviceable)
Separate from the low-voltage fuses and relays covered in this guide, the Focus Electric’s high-voltage lithium-ion battery pack and associated components are protected by a sealed high-voltage disconnect and fuse system, located within the battery pack enclosure itself. This system is designed to be serviced only by trained technicians using specialized equipment and proper safety gear.
Important: Never attempt to open, inspect, or service any orange-colored high-voltage cabling, connectors, or components. These carry dangerously high voltage and should only be handled by qualified EV professionals.
How to Identify the Right Fuse or Relay
Both the front compartment and interior fuse boxes include a printed diagram, usually located on the inside of the fuse box cover, detailing each fuse and relay by number, amperage rating, and function.
When troubleshooting:
- Identify the malfunctioning component (e.g., “wipers” or “SYNC system”) and match it to its corresponding number on the diagram.
- Confirm the amperage rating on the old fuse matches the replacement before installing a new one.
- For relays, use the diagram to confirm the correct slot, since several relays may look similar despite controlling different systems.
If the printed diagram is missing or difficult to read, refer to your owner’s manual for a detailed fuse box diagram specific to your Focus Electric, since EV-specific circuits differ from the standard gasoline Focus models sold in the US.
Safety Precautions Before Checking Fuses or Relays
Working on an electric vehicle requires additional caution beyond standard fuse-checking procedures:
- Turn off the vehicle completely and ensure the key fob is out of range before accessing any fuse or relay.
- Only work on the low-voltage fuse boxes described in this guide, never attempt to access high-voltage components, which are colored orange and sealed for safety.
- If you need to disconnect the 12-volt auxiliary battery for electrical work, follow the proper disconnection procedure outlined in your owner’s manual, as EVs can have specific power-down sequences.
- Use the fuse puller tool, often built into the fuse box cover, rather than metal tools that could cause sparking.
- Never replace a low-voltage fuse with one of a higher amperage rating than specified, as this can damage wiring or create a fire hazard.
- If you suspect an issue with the high-voltage system, charging components, or battery management system, do not attempt DIY repairs, these require a qualified EV technician with proper training and safety equipment.
Checking and Replacing Fuses in Ford Focus Electric (US)
If electrical components in the vehicle are not working, a fuse may have blown. Blown fuses are identified by a broken wire within the fuse. Check the appropriate fuses before replacing any electrical components.
Location of Fuse Boxes
Passenger Compartment Fuse Box:
Electric Motor Compartment Fuse Box:
Lift the release lever at the rear of the cover to remove it.
This fuse box contains several high current fuses that protect your vehicle’s main electrical systems from overloads. If the 12 volt battery is disconnected and reconnected, some features need to be reset.
Pre-Fuse Box
Your vehicle has a pre-fuse box located in the electric motor compartment on the front of the 12 volt battery box. It is connected to the 12 volt battery positive terminal. This fuse box contains several high current fuses. If replacement of these high current fuses is required, contact an authorized dealer.
Luggage Compartment Fuse Box:
Fuse Box Diagrams
2015
Passenger Compartment Fuse Box
List of fuses in the passenger compartment fuse box (2015)
| № | A | Circuits protected |
|---|---|---|
| F56 | – | Not used. |
| F57 | – | Not used. |
| F58 | – | Not used. |
| F59 | – | Not used. |
| F60 | 10A | Interior lamp. Driver door switch pack. Glove compartment lamp. Ambient lighting lamp. |
| F61 | 20A | Front cigar lighter Socket. Rear auxiliary power points. |
| F62 | – | Not used. |
| F63 | – | Not used. |
| F64 | – | Not used. |
| F65 | 10A | Luggage compartment lid release. |
| F66 | – | Not used. |
| F67 | 7.5A | Global positioning sensor. SYNC. |
| F68 | – | Not used. |
| F69 | 5A | Instrument panei cluster. |
| F70 | – | Not used. |
| F71 | 7.5A | Air conditioning. |
| F72 | 7.5A | Steering wheel control module. |
| F73 | 7.5A | Smart data link module. |
| F74 | 15A | High beam headlamp. |
| F75 | – | Not used. |
| F76 | 10A | Reversing lamp. |
| F77 | 20A | Washer pump. |
| F78 | 5A | Ignition switch. Push button ignition switch. |
| F79 | 15A | Audio unit. Hazard flasher switch. Door lock buttons. |
| F80 | – | Not used. |
| F81 | 5A | Radio frequency receiver. |
| F82 | 20A | Washer pump (ground). |
| F83 | 20A | Central locking (ground). |
| F84 | 20A | Driver door unlock (ground). Double locking ground (ground). |
| F85 | 7.5A | Heated seats switch. |
| F86 | 10A | Restraint system. Passenger airbag deactivation system. |
| F87 | – | Not used. |
| F88 | – | Not used. |
| F89 | – | Not used. |
Electric Motor Compartment Fuse Box
List of fuses in the electric motor compartment fuse box (2015)
| № | A | Circuits protected |
|---|---|---|
| F7 | 40A** | Anti-lock brake system. Stability control (KL30V). |
| F8 | 30A** | Anti-lock brake system. Stability control (KL30P). |
| F9 | – | Not used. |
| F10 | 40A** | Blower motor module. |
| F11 | 40A** | Brake vacuum pump. |
| F12 | 40A** | Electric motor control relay. |
| F13 | 40A** | Battery charging control module. |
| F14 | 40A** | Coolant heater one. |
| F15 | 30A** | Body control module (KL30C supply). |
| F16 | 40A** | Coolant heater two. |
| F17 | – | Not used. |
| F18 | 20A** | Windshield wiper. |
| F19 | 5A* | Anti-lock brake system. Stability control (KL15). |
| F20 | 15A* | Horn. |
| F21 | 5A* | Stop lamp switch. |
| F22 | 15A* | Battery monitoring system. |
| F23 | 5A* | Relay coils. |
| F24 | 5A* | Lighting control switch module. |
| F25 | – | Not used. |
| F26 | 10A* | Powertrain control module. |
| F27 | 15A* | Charge port light ring. |
| F28 | 5A* | Vacuum pump monitor. |
| F29 | – | Not used. |
| F30 | 5A* | Transmission control module (12V supply). |
| F31 | 10A* | Smart data link/on-board diagnostic connector. |
| F32 | 10A* | Coolant valve. Air conditioning solenoid. Chiller solenoid. |
| F33 | 10A* | Powertrain control module/A/C compressor PSR feedback. |
| F34 | 15A* | High voltage battery. |
| F35 | – | Not used. |
| F36 | 20A* | Coolant pump. |
| F37 | 5A* | Vehicie audible signal for pedestrians. |
| F38 | 15A* | Powertrain control module (KL15 supply). |
| F39 | – | Not used. |
| F40 | 5A* | Electronic power assist steering. |
| F41 | 20A* | Body control module (KL15 supply). |
| F42 | – | Not used. |
| F43 | 15A* | Daytime running light. |
| F44 | – | Not used. |
| F45 | – | Not used. |
| F46 | – | Not used. |
| F47 | – | Not used. |
| F48 | 5A* | Mechanical relay coil fuse. |
| Relay | ||
| R1 | – | Not used. |
| R2 | Micro relay | Horn. |
| R3 | – | Not used. |
| R4 | Micro relay | High voltage battery. |
| R5 | – | Not used. |
| R6 | – | Not used. |
| R7 | Power relay | Coolant heater element three. |
| R8 | Power relay | Coolant heater element one and two. |
| R9 | – | Not used. |
| R10 | Mini relay | Brake vacuum pump. |
| R11 | – | Not used. |
| R12 | Power relay | Electronic fan control module. |
| R13 | Mini relay | Blower motor. |
| R14 | Mini relay | Electric motor control. |
| R15 | Power relay | Brake vacuum pump mechanical relay. |
| R16 | Power relay | Ignition. |
| *Mini fuses **Cartridge fuses | ||
Pre-Fuse Box
List of fuses in the pre-fuse box (2015)
| № | A | Circuits protected |
|---|---|---|
| F1 | 80A | Electronic power assist steering. |
| F2 | 150A | 12 volt battery charge. |
| F3 | 100A | Power distribution box. |
| F4 | 50A | Body control module (KL30A supply). |
| F5 | 70A | High voltage battery coolant element one and two. |
| F6 | 70A | Load compartment fuse box. |
| F7 | – | Not used. |
| F8 | 50A | Electric fan control module. |
| F9 | 50A | Body control module (KL30B supply). |
| F10 | 40A | High voltage battery coolant element three. |
Luggage Compartment Fuse Box
List of fuses in the luggage compartment fuse box (2015)
| № | A | Circuits protected |
|---|---|---|
| F1 | 5A* | Cellphone passport module. |
| F2 | – | Not used. |
| F3 | 5A* | Keyless vehicle door handles. |
| F4 | 25A* | Front power window (left). Central locking (front left). Power folding mirror (left). Heated exterior mirror (left). |
| F5 | 25A* | Front power window (right). Central locking (front right). Power folding mirror (right). Heated exterior mirror (right). |
| F6 | 25A* | Rear left door module (KL30 supply). |
| F7 | 25A* | Rear right door module (KL30 supply). |
| F8 | 5A* | Ignition relay. |
| F9 | 25A* | Driver power seat. |
| F10 | 25A* | Heated rear window. |
| F11 | 5A* | High voltage battery (12V B+). |
| F12 | – | Not used. |
| F13 | – | Not used. |
| F14 | – | Not used. |
| F15 | – | Not used. |
| F16 | – | Not used. |
| F17 | – | Not used. |
| F18 | – | Not used. |
| F19 | – | Not used. |
| F20 | – | Not used. |
| F21 | – | Not used. |
| F22 | – | Not used. |
| F23 | – | Not used. |
| F24 | – | Not used. |
| F25 | – | Not used. |
| F26 | – | Not used. |
| F27 | – | Not used. |
| F28 | – | Not used. |
| F29 | 5A* | High voltage battery (12V B+). |
| F30 | 5A* | Parking aid module. |
| F31 | – | Not used. |
| F32 | – | Not used. |
| F33 | 15A | Rear wiper motor. |
| F34 | 15A* | Heated seat (driver). |
| F35 | 15A* | Heated seat (front passenger). |
| F36 | – | Not used. |
| F37 | – | Not used. |
| F38 | – | Not used. |
| F39 | – | Not used. |
| F40 | – | Not used. |
| F41 | – | Not used. |
| F42 | – | Not used. |
| F43 | – | Not used. |
| F44 | – | Not used. |
| F45 | – | Not used. |
| F46 | – | Not used. |
| Relay | ||
| R1 | Power relay | Rear KL15E. |
| R2 | Mini relay | Heated rear window. |
| R3 | Micro relay | Rear window wiper. |
| R4 | – | Not used. |
| R5 | – | Not used. |
| R6 | – | Not used. |
| *Mini fuses **Cartridge fuses | ||
2016
Passenger Compartment Fuse Box
List of fuses in the passenger compartment fuse box (2016)
| № | A | Circuits protected |
|---|---|---|
| F56 | – | Not used. |
| F57 | – | Not used. |
| F58 | – | Not used. |
| F59 | – | Not used. |
| F60 | 10A | Interior lamp. Driver door switch pack.Glove compartment lamp. Ambient lighting lamp. |
| F61 | 20A | Front cigar lighter socket. Rear auxiliary power points. |
| F62 | – | Not used. |
| F63 | – | Not used. |
| F64 | – | Not used. |
| F65 | 10A | Luggage compartment lid release. |
| F66 | – | Not used. |
| F67 | 7.5A | Global positioning sensor. SYNC. |
| F68 | – | Not used. |
| F69 | 5A | Instrument panei cluster. |
| F70 | – | Not used. |
| F71 | 7.5A | Air conditioning. |
| F72 | 7.5A | Steering wheel control module. |
| F73 | 7.5A | Smart data link module. |
| F74 | 15A | High beam headlamp. |
| F75 | – | Not used. |
| F76 | 10A | Reversing lamp. |
| F77 | 20A | Washer pump. |
| F78 | 5A | Push button ignition switch. Keyless vehicle module (supply). |
| F79 | 15A | Audio unit. Hazard flasher switch. |
| F80 | – | Not used. |
| F81 | 5A | Radio frequency receiver. |
| F82 | 20A | Ground fuse (front washer pump relay supply). Ground fuse (rear washer pump relay supply). |
| F83 | 20A | Ground fuse (central lock supply). Ground fuse (central unlock supply). |
| F84 | 20A | Ground fuse (driver door unlock relay supply). Ground fuse (central/double lock relay supply). Ground fuse (release relay supply). |
| F85 | 7.5A | Heated seats switch. |
| F86 | 10A | Restraint system. Passenger airbag deactivation switch. Occupant weight sensor. |
| F87 | – | Not used. |
| F88 | – | Not used. |
| F89 | – | Not used. |
Electric Motor Compartment Fuse Box
List of fuses in the electric motor compartment fuse box (2016)
| № | A | Circuits protected |
|---|---|---|
| F7 | 40A** | Anti-lock brake system. Stability control (KL30V). |
| F8 | 30A** | Anti-lock brake system. Stability control (KL30P). |
| F9 | – | Not used. |
| F10 | 40A** | Blower motor module. |
| F11 | 40A** | Brake vacuum pump. |
| F12 | 40A** | Electric motor control relay. |
| F13 | 40A** | Battery charging control module. |
| F14 | 40A** | Coolant heater one. |
| F15 | 30A** | Body control module (KL30C supply). |
| F16 | 40A** | Coolant heater two. |
| F17 | – | Not used. |
| F18 | 20A** | Windshield wiper. |
| F19 | 5A* | Anti-lock brake system. Stability control (KL15). |
| F20 | 15A* | Horn. |
| F21 | 5A* | Stop lamp switch. |
| F22 | 15A* | Battery monitoring system. |
| F23 | 5A* | Relay coils. |
| F24 | 5A* | Lighting control switch module. |
| F25 | – | Not used. |
| F26 | 10A* | Powertrain control module. |
| F27 | 15A* | Charge port light ring. |
| F28 | 5A* | Vacuum pump monitor. |
| F29 | – | Not used. |
| F30 | 5A* | Transmission control module (12V supply). |
| F31 | 10A* | Smart data link/on-board diagnostic connector. |
| F32 | 10A* | Coolant valve. Air conditioning solenoid. Chiller solenoid. |
| F33 | 10A* | Powertrain control module. A/C compressor PSR feedback. |
| F34 | 15A* | High voltage battery. |
| F35 | – | Not used. |
| F36 | 20A* | Coolant pump. |
| F37 | 5A* | Vehicle audible signal for pedestrians. |
| F38 | 15A* | Powertrain control module (KL15 supply). |
| F39 | 15A* | Heated driver’s seat. |
| F40 | 5A* | Electronic power assist steering. |
| F41 | 20A* | Body control module (KL15 supply). |
| F42 | 15A* | Rear wiper motor. |
| F43 | 15A* | Daytime running light. |
| F44 | – | Not used. |
| F45 | 15A* | Heated passenger seat. |
| F46 | – | Not used. |
| F47 | – | Not used. |
| F48 | 5A* | Mechanical relay coil. |
| R1 | – | Not used. |
| R2 | Micro relay | Horn. |
| R3 | – | Not used. |
| R4 | Micro relay | High voltage battery. Engine control module (contactor sense). |
| R5 | – | Not used. |
| R6 | – | Not used. |
| R7 | Power relay | Coolant heater element three. |
| Relay | ||
| R8 | Power relay | Coolant heater element one and two. |
| R9 | – | Not used. |
| R10 | Mini relay | Brake vacuum pump. |
| R11 | – | Not used. |
| R12 | Power relay | Electronic fan control module. |
| R13 | Mini relay | Blower motor. |
| R14 | Mini relay | Electric motor control. |
| R15 | Power relay | Brake vacuum pump mechanical relay. |
| R16 | Power relay | Ignition. |
| *Mini fuses **Cartridge fuses | ||
Pre-Fuse Box
List of fuses in the pre-fuse box (2016)
| № | A | Circuits protected |
|---|---|---|
| F1 | 80A | Electronic power assist steering. |
| F2 | 150A | DC/DC converter. |
| F3 | 100A | Power distribution box. |
| F4 | 50A | Body control module (KL30A supply). |
| F5 | 70A | High voltage battery coolant element one and two. |
| F6 | 70A | Load compartment fuse box. |
| F7 | – | Not used. |
| F8 | 50A | Electric fan control module. |
| F9 | 50A | Body control module (KL30B supply). |
| F10 | 40A | High voltage battery coolant element three. |
Luggage Compartment Fuse Box
List of fuses in the luggage compartment fuse box (2016)
| № | A | Circuits protected |
|---|---|---|
| F1 | 5A* | Cellphone passport module. |
| F2 | – | Not used. |
| F3 | 5A* | Keyless vehicle door handles. |
| F4 | 25A* | Front power window (left). Central locking (front left). Heated exterior mirror (left). |
| F5 | 25A* | Front power window (right). Central locking (front right). Heated exterior mirror (right). |
| F6 | 25A* | Rear left door module (KL30 supply). |
| F7 | 25A* | Rear right door module (KL30 supply). |
| F8 | 5A* | Ignition relay. |
| F9 | 25A* | Driver power seat. |
| F10 | 25A* | Heated rear window. |
| F11 | 5A* | High voltage battery (12V B+). |
| F12 | – | Not used. |
| F13 | – | Not used. |
| F14 | – | Not used. |
| F15 | – | Not used. |
| F16 | – | Not used. |
| F17 | – | Not used. |
| F18 | – | Not used. |
| F19 | – | Not used. |
| F20 | – | Not used. |
| F21 | – | Not used. |
| F22 | – | Not used. |
| F23 | – | Not used. |
| F24 | – | Not used. |
| F25 | – | Not used. |
| F26 | – | Not used. |
| F27 | – | Not used. |
| F28 | – | Not used. |
| F29 | 5A* | Rearview camera. |
| F30 | 5A* | Parking aid module. |
| F31 | – | Not used. |
| F32 | – | Not used. |
| F33 | – | Not used. |
| F34 | – | Not used. |
| F35 | – | Not used. |
| F36 | – | Not used. |
| F37 | – | Not used. |
| F38 | – | Not used. |
| F39 | – | Not used. |
| F40 | – | Not used. |
| F41 | – | Not used. |
| F42 | – | Not used. |
| F43 | – | Not used. |
| F44 | – | Not used. |
| F45 | – | Not used. |
| F46 | – | Not used. |
| Relay | ||
| R1 | Power relay | Rear KL15E. |
| R2 | Mini relay | Heated rearwindow. |
| R3 | Micro relay | Rear window wiper. |
| R4 | – | Not used. |
| R5 | – | Not used. |
| R6 | – | Not used. |
| *Mini fuses **Cartridge fuses | ||
2017
Passenger Compartment Fuse Box
List of fuses in the passenger compartment fuse box (2017)
| № | A | Protected Component |
|---|---|---|
| F56 | 20A | Not used (spare). |
| F57 | – | Not used. |
| F58 | – | Not used. |
| F59 | 5A | Not used (spare). |
| F60 | 10A | Interior lamp. Driver door switch pack. Glove compartment lamp. Ambient lighting lamp. |
| F61 | 20A | Front cigar lighter Socket. Rear auxiliary power points. |
| F62 | 5A | Not used (spare). |
| F63 | – | Not used. |
| F64 | – | Not used. |
| F65 | 10A | Luggage compartment lid release. |
| F66 | 20A | Not used (spare). |
| F67 | 7.5A | Global positioning sensor. SYNC module. |
| F68 | – | Not used. |
| F69 | 5A | Instrument panei cluster. |
| F70 | 20A | Not used (spare). |
| F71 | 7.5A | Air conditioning. |
| F72 | 7.5A | Steering wheel control module. |
| F73 | 7.5A | Smart data link module. |
| F74 | 15A | High beam headlamp. |
| F75 | 15A | Not used (spare). |
| F76 | 10A | Reversing lamp. |
| F77 | 20A | Washer pump. |
| F78 | 5A | Push button ignition switch. Keyless vehicle module (supply). |
| F79 | 15A | Audio unit. Hazard flasher switch. |
| F80 | 20A | Not used (spare). |
| F81 | 5A | Radio frequency receiver. |
| F82 | 20A | Ground fuse (front washer pump relay supply). Ground fuse (rear washer pump relay supply). |
| F83 | 20A | Ground fuse (central lock supply). Ground fuse (central unlock supply). |
| F84 | 20A | Ground fuse (driver door unlock relay supply). Ground fuse (central/double lock relay supply). Ground fuse (release relay supply). |
| F85 | 7.5A | Heated seats (ignition sense). |
| F86 | 10A | Restraint system. Passenger airbag deactivation switch. Occupant weight sensor. |
| F87 | 15A | Not used (spare). |
| F88 | – | Not used. |
| F89 | – | Not used. |
Electric Motor Compartment Fuse Box
List of fuses in the electric motor compartment fuse box (2017)
| № | A | Protected Component |
|---|---|---|
| F7 | 40A** | Anti-lock brake system. Stability control (KL30V). |
| F8 | 30A** | Anti-lock brake system. Stability control (KL30P). |
| F9 | – | Not used. |
| F10 | 40A** | Blower motor module. |
| F11 | 40A** | Brake vacuum pump relay. |
| F12 | 40A** | Electric motor control relay. |
| F13 | 40A** | Battery charging control module. |
| F14 | 40A** | Coolant heater one. |
| F15 | 30A** | Body control module (KL30C supply). |
| F16 | 40A** | Coolant heater two. |
| F17 | – | Not used. |
| F18 | 20A** | Windshield wiper. |
| F19 | 5A* | Anti-lock brake system. Stability control (KL15). |
| F20 | 15A* | Horn. |
| F21 | 5A* | Stop lamp switch. |
| F22 | 15A* | Battery monitoring system. |
| F23 | 5A* | Relay coils. |
| F24 | 5A* | Lighting control switch module. |
| F25 | – | Not used. |
| F26 | 10A* | Powertrain control module. |
| F27 | 15A* | Charge port light ring. |
| F28 | 5A* | Vacuum pump monitor. |
| F29 | – | Not used. |
| F30 | 5A* | Transmission control module (12V supply). |
| F31 | 10A* | Smart data link/on-board diagnostic connector. |
| F32 | 10A* | Coolant valve. Air conditioning solenoid. Chiller solenoid. |
| F33 | 10A* | Powertrain control module. A/C compressor PSR feedback. |
| F34 | 15A* | High voltage battery. |
| F35 | 5A* | Electric vehicle communication controller. |
| F36 | 20A* | Coolant pump. |
| F37 | 5A* | Vehicle audible signal for pedestrians. |
| F38 | 15A* | Powertrain control module (KL15 supply). |
| F39 | – | Not used. |
| F40 | 5A* | Electronic power assist steering. |
| F41 | 20A* | Body control module (KL15 supply). |
| F42 | 15A* | Rear wiper motor. |
| F43 | 15A* | Daytime running light. |
| F44 | – | Not used. |
| F45 | – | Not used. |
| F46 | – | Not used. |
| F47 | – | Not used. |
| F48 | 5A* | Mechanical relay coil. |
| Relay | ||
| R1 | Not used. | |
| R2 | Horn. | |
| R3 | Not used. | |
| R4 | High voltage battery. Engine control module (contactor sense). | |
| R5 | Not used. | |
| R6 | Not used. | |
| R7 | Coolant heater element three. | |
| R8 | Coolant heater element one and two. | |
| R9 | Not used. | |
| R10 | Brake vacuum pump. | |
| R11 | Not used. | |
| R12 | Electronic fan control module. | |
| R13 | Blower motor. | |
| R14 | Electric motor control. | |
| R15 | Brake vacuum pump mechanical relay. | |
| R16 | Ignition. | |
| *Mini fuses **Cartridge fuses | ||
Pre-Fuse Box
List of fuses in the pre-fuse box (2017)
| № | A | Protected Component |
|---|---|---|
| F1 | 80A | Electronic power assist steering. |
| F2 | 150A | DC/DC converter. |
| F3 | 100A | Power distribution box. |
| F4 | 50A | Body control module (KL30A supply). |
| F5 | 70A | High voltage battery coolant element one and two. |
| F6 | 70A | Load compartment fuse box. |
| F7 | – | Not used. |
| F8 | 50A | Electric fan control module. |
| F9 | 50A | Body control module (KL30B supply). |
| F10 | 40A | High voltage battery coolant element three. |
Luggage Compartment Fuse Box
List of fuses in the luggage compartment fuse box (2017)
| № | A | Protected Component |
|---|---|---|
| F1 | 5A* | Cellphone passport module. |
| F2 | – | Not used. |
| F3 | 5A* | Keyless vehicle door handles. |
| F4 | 25A* | Left-hand front power Windows. Left-hand heated exterior mirror. Left-hand power door lock. |
| F5 | 25A* | Right-hand front power Windows. Right-hand power door lock. Right-hand heated exterior mirror. |
| F6 | 25A* | Rear left door module (KL30 supply). |
| F7 | 25A* | Rear right door module (KL30 supply). |
| F8 | 5A* | Ignition relay. |
| F9 | 25A* | Driver power seat. |
| F10 | 25A* | Heated rear window. |
| F11 | 5A* | High voltage battery (12V B+). |
| F12 | – | Not used. |
| F13 | – | Not used. |
| F14 | – | Not used. |
| F15 | – | Not used. |
| F16 | – | Not used. |
| F17 | – | Not used. |
| F18 | – | Not used. |
| F19 | – | Not used. |
| F20 | – | Not used. |
| F21 | – | Not used. |
| F22 | – | Not used. |
| F23 | – | Not used. |
| F24 | – | Not used. |
| F25 | – | Not used. |
| F26 | – | Not used. |
| F27 | – | Not used. |
| F28 | – | Not used. |
| F29 | 5A* | Rear view camera. |
| F30 | 5A* | Parking assist control module. |
| F31 | – | Not used. |
| F32 | – | Not used. |
| F33 | – | Not used. |
| F34 | 15A* | Driver heated seat. |
| F35 | 15A* | Passenger heated seat. |
| F36 | – | Not used. |
| F37 | – | Not used. |
| F38 | – | Not used. |
| F39 | – | Not used. |
| F40 | – | Not used. |
| F41 | – | Not used. |
| F42 | – | Not used. |
| F43 | – | Not used. |
| F44 | – | Not used. |
| F45 | – | Not used. |
| F46 | – | Not used. |
| Relay | ||
| R1 | Air conditioning control module. Heated front seats. Rear view camera. Parking assist control module. | |
| R2 | Heated rear window. | |
| R3 | Rear window wiper. | |
| R4 | Not used. | |
| R5 | Not used. | |
| R6 | Not used. | |
| *Mini fuses **Cartridge fuses | ||
2018
Passenger Compartment Fuse Box
List of fuses in the passenger compartment fuse box (2018)
| № | A | Protected Component |
|---|---|---|
| F56 | 20A | Not used (spare). |
| F57 | – | Not used. |
| F58 | – | Not used. |
| F59 | 5A | Not used (spare). |
| F60 | 10A | Interior lamp. Driver door switch pack. Glove compartment lamp. Ambient lighting lamp. |
| F61 | 20A | Front cigar lighter socket. Rear auxiliary power points. |
| F62 | 5A | Not used (spare). |
| F63 | – | Not used. |
| F64 | – | Not used. |
| F65 | 10A | Luggage compartment lid release. |
| F66 | 20A | Not used (spare). |
| F67 | 7.5A | Global positioning sensor. SYNC module. |
| F68 | – | Not used. |
| F69 | 5A | Instrument panei cluster. |
| F70 | 20A | Not used (spare). |
| F71 | 7.5A | Air conditioning. |
| F72 | 7.5A | Steering wheel control module. |
| F73 | 7.5A | Smart data link module. |
| F74 | 15A | High beam headlamp. |
| F75 | 15A | Not used (spare). |
| F76 | 10A | Reversing lamp. |
| F77 | 20A | Washer pump. |
| F78 | 5A | Push button ignition switch. Keyless vehicle module (supply). |
| F79 | 15A | Audio unit. Hazard flasher switch. |
| F80 | 20A | Not used (spare). |
| F81 | 5A | Radio frequency receiver. |
| F82 | 20A | Ground fuse (front washer pump relay supply). Ground fuse (rear washer pump relay supply). |
| F83 | 20A | Ground fuse (central lock supply). Ground fuse (central unlock supply). |
| F84 | 20A | Ground fuse (driver door unlock relay supply). Ground fuse (central/double lock relay supply). Ground fuse (release relay supply). |
| F85 | 7.5A | Heated seats (ignition sense). |
| F86 | 10A | Restraint system. Passenger airbag deactivation switch. Occupant weight sensor. |
| F87 | 15A | Not used (spare). |
| F88 | – | Not used. |
| F89 | – | Not used. |
Electric Motor Compartment Fuse Box
List of fuses in the electric motor compartment fuse box (2018)
| № | A | Protected Component |
|---|---|---|
| F7 | 40A** | Anti-lock brake system. Stability control (KL30V). |
| F8 | 30A** | Anti-lock brake system. Stability control (KL30P). |
| F9 | – | Not used. |
| F10 | 40A** | Blower motor module. |
| F11 | 40A** | Brake vacuum pump relay. |
| F12 | 40A** | Electric motor control relay. |
| F13 | 40A** | Battery charging control module. |
| F14 | 40A** | Coolant heater one. |
| F15 | 30A** | Body control module (KL30C supply). |
| F16 | 40A** | Coolant heater two. |
| F17 | – | Not used. |
| F18 | 20A** | Windshield wiper. |
| F19 | 5A* | Anti-lock brake system. Stability control (KL15). |
| F20 | 15A* | Horn. |
| F21 | 5A* | Stop lamp switch. |
| F22 | 15A* | Battery monitoring system. |
| F23 | 5A* | Relay coils. |
| F24 | 5A* | Lighting control switch module. |
| F25 | – | Not used. |
| F26 | 10A* | Powertrain control module. |
| F27 | 15A* | Charge port light ring. |
| F28 | 5A* | Vacuum pump monitor. |
| F29 | – | Not used. |
| F30 | 5A* | Transmission control module (12V supply). |
| F31 | 10A* | Smart data link/on-board diagnostic connector. |
| F32 | 10A* | Coolant valve. Air conditioning solenoid. Chiller solenoid. |
| F33 | 10A* | Powertrain control module. A/C compressor PSR feedback. |
| F34 | 15A* | High voltage battery. |
| F35 | 5A* | Electric vehicle communication controller. |
| F36 | 20A* | Coolant pump. |
| F37 | 5A* | Vehicle audible signal for pedestrians. |
| F38 | 15A* | Powertrain control module (KL15 supply). |
| F39 | – | Not used. |
| F40 | 5A* | Electronic power assist steering. |
| F41 | 20A* | Body control module (KL15 supply). |
| F42 | 15A* | Rear wiper motor. |
| F43 | 15A* | Daytime running light. |
| F44 | – | Not used. |
| F45 | – | Not used. |
| F46 | – | Not used. |
| F47 | – | Not used. |
| F48 | 5A* | Mechanical relay coil. |
| Relay | ||
| R1 | Not used. | |
| R2 | Horn. | |
| R3 | Not used. | |
| R4 | High voltage battery. Engine control module (contactor sense). | |
| R5 | Not used. | |
| R6 | Not used. | |
| R7 | Coolant heater element three. | |
| R8 | Coolant heater element one and two. | |
| R9 | Not used. | |
| R10 | Brake vacuum pump. | |
| R11 | Not used. | |
| R12 | Electronic fan control module. | |
| R13 | Blower motor. | |
| R14 | Electric motor control. | |
| R15 | Brake vacuum pump mechanical relay. | |
| R16 | Ignition. | |
Pre-Fuse Box
| № | A | Protected Component |
|---|---|---|
| F1 | 80A | Electronic power assist steering. |
| F2 | 150A | DC/DC converter. |
| F3 | 100A | Power distribution box. |
| F4 | 50A | Body control module (KL30A supply). |
| F5 | 70A | High voltage battery coolant element one and two. |
| F6 | 70A | Load compartment fuse box. |
| F7 | – | Not used. |
| F8 | 50A | Electric fan control module. |
| F9 | 50A | Body control module (KL30B supply). |
| F10 | 40A | High voltage battery coolant element three. |
Luggage Compartment Fuse Box
List of fuses in the luggage compartment fuse box (2018)
| № | A | Protected Component |
|---|---|---|
| F1 | 5A* | Cellphone passport module. |
| F2 | – | Not used. |
| F3 | 5A* | Keyless vehicle door handles. |
| F4 | 25A* | Left-hand front power Windows. Left-hand heated exterior mirror. Left-hand power door lock. |
| F5 | 25A* | Right-hand front power Windows. Right-hand power door lock. Right-hand heated exterior mirror. |
| F6 | 25A* | Rear left door module (KL30 supply). |
| F7 | 25A* | Rear right door module (KL30 supply). |
| F8 | 5A* | Ignition relay. |
| F9 | 25A* | Driver power seat. |
| F10 | 25A* | Heated rear window. |
| F11 | 5A* | High voltage battery (12V B+). |
| F12 | – | Not used. |
| F13 | – | Not used. |
| F14 | – | Not used. |
| F15 | – | Not used. |
| F16 | – | Not used. |
| F17 | – | Not used. |
| F18 | – | Not used. |
| F19 | – | Not used. |
| F20 | – | Not used. |
| F21 | – | Not used. |
| F22 | – | Not used. |
| F23 | – | Not used. |
| F24 | – | Not used. |
| F25 | – | Not used. |
| F26 | – | Not used. |
| F27 | – | Not used. |
| F28 | – | Not used. |
| F29 | 5A* | Rearview camera. |
| F30 | 5A* | Parking assist control module. |
| F31 | – | Not used. |
| F32 | – | Not used. |
| F33 | – | Not used. |
| F34 | 15A* | Driver heated seat. |
| F35 | 15A* | Passenger heated seat. |
| F36 | – | Not used. |
| F37 | – | Not used. |
| F38 | – | Not used. |
| F39 | – | Not used. |
| F40 | – | Not used. |
| F41 | – | Not used. |
| F42 | – | Not used. |
| F43 | – | Not used. |
| F44 | – | Not used. |
| F45 | – | Not used. |
| F46 | – | Not used. |
| Relay | ||
| R1 | Air conditioning control module. Heated front seats. Rear view camera. Parking assist control module. | |
| R2 | Heated rearwindow. | |
| R3 | Rear window wiper. | |
| R4 | Not used. | |
| R5 | Not used. | |
| R6 | Not used. | |
| *Mini fuses **Cartridge fuses | ||
Conclusion
Understanding the fuse box and relay locations on your 2015–2018 Ford Focus Electric helps you confidently handle routine low-voltage electrical issues, such as interior lighting, wiper problems, or infotainment glitches. However, because this is an electric vehicle, it’s essential to recognize the clear boundary between standard fuse maintenance and the sealed high-voltage system that powers the drivetrain.
Always handle low-voltage fuses and relays with care, confirm amperage ratings before replacing any component, and use the printed diagram to correctly identify each part. For anything related to the high-voltage battery, charging system, or drive components, always consult a qualified Ford EV technician to ensure your safety and avoid damaging critical systems.
