The BMW 3-Series, encompassing models F30, F31, and F34 from 2012 to 2018, exemplifies sportiness and luxury in the compact executive car segment. Understanding the fuse box and relay diagrams of these models is crucial for maintaining and troubleshooting their advanced electrical systems. This article delves into the locations, functions, and importance of these components, providing insights into the BMW 3-Series F30/F31/F34’s electrical architecture.
(2012-2018) BMW 3-Series (F30/F31/F34) 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.
BMW 3-Series (F30/F31/F34) 2012-2018 fuse assignment
Fuse box in the engine compartment
Fuse Box Location
It is located on the right side of the engine compartment (on the left side on the right-hand drive vehicles), under the plastic cover.
Fuse box diagram
Assignment of the fuses
Fuse layout may differ! Your exact fuse allocation scheme is located near the fuse box in the luggage compartment.
Fuse Block in the passenger compartment (BDC)
Fuse Box Location
It is located in the front pillar on the passenger side, under the glove box.
Scheme
- 54-pin connector
- 12-pin connector
- 42-pin connector
- 54-pin connector
- Fuses
- Connector (1-pin, positive)
- Relays
- 54-pin connector
- 54-pin connector
- 54-pin connector
Fuses:
- Switching center in the steering column (SZL)
- Control panel for driver assistance systems
- Lighting control panel
- LED headlights
- Rear electronic module (REM)
- Connector OBDII, IHKA
- Electronic block of external door handle
- Window lifter
- Central locking
Relays:
- Electric windows
- Central locking
- Headlight washers
- Starter
- Horn
- Windshield wiper at 1/2 speed
Fuse boxes in the luggage compartment
Fuse Box Location
The first unit is located on the right side, behind the cover, above the battery.
The second – in the center, under the lining.
Fuse box diagram
Assignment of the fuses
Fuse layout may differ! Your exact fuse allocation scheme is located near the fuse box in the luggage compartment.
Exploring the fuse box and relay diagrams of the BMW 3-Series F30/F31/F34 2012-2018 enhances comprehension of its sophisticated electrical infrastructure. Proper maintenance and understanding of these components are essential for ensuring the vehicle’s reliability, performance, and electrical safety throughout its usage.
