BMW 3 F30 / F31 / F34 (2011-2019) – fuse box

BMW 3 F30 / F31 / F34 (2011-2019) – fuse box diagram

Year of production: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019.

Fuse box in the engine compartment

The scheme of the fuse box

Number Amperes [A] Description
1 Not used
2 Not used
3 5A Control unit, roof electronics
4 5A Heater control unit
5 7.5A Door lock switches;

Passenger’s rear-view mirror.

6 10 A. Main DDE relay
7 10 A. Automatic transmission electronic control unit (EAT)
8 5A Touch box;

Body control unit.

9 Not used
10 10 A. Seat adjustment
11 5A Front left lamp in the bathroom;

Front right lamp in the bathroom;

Rain sensor;

Interior lighting.

12 5A Cut-off relay;

Dynamic Stability Control (DSC).

13 Not used
14 Not used
15 5A Transfer box
16 10 A. Coolant pump;

Air conditioning compressor;

Additional water pump.

17 Not used
18 Not used
19 5A Electrochromic rearview mirror
20 Not used
21 5A Driver assistance system
22 5A Cruise control
23 5A Crankcase breather heater;

Coolant shut-off valve.

24 Not used
25 10 A. Steering column switches
26 Not used
27 5A Instrument cluster
28 Not used
29 7.5A Instrument cluster
30 5A Glove box lighting
31 7.5A Gear shift switch
32 5A Electronic Power Steering (EPS)
33 5A Air quality sensor
34 Not used
35 Not used
36 Not used
37 Not used
38 Not used
39 Not used
40 40A Fuse box
41 30A Dynamic Stability Control (DSC)
42 Not used
43 Not used
44 Not used
45 30A Convertible roof
46 30A Transfer box
47 20A Heated passenger seat
48 20A Heated driver’s seat
49 20A Lighter
50 30A Driver’s seat controller;

Driver seat adjustment.

51 30A Passenger seat adjustment;

Passenger seat control unit.

52 12 V power supply
53 Not used
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Fuse and relay box in the engine compartment

Number Amperes [A] Protected circuits
1 20 Rail pressure regulating valve;

Fuel quantity regulator;

The camshaft position sensor;

Solenoid valve of the boost pressure regulator.

2 20 Oxygen sensor in front of the catalyst;

Oxygen sensors after catalytic converter;

Mass flow meter;

Oil level sensor;

EGR cooler reversing valve.

3 30 DDE control unit
4 Not used
5 Not used
R1 Main DDE relay

Fuse and relay box in engine compartment (type 2)

Number Amperes [A] Description
1 20A Engine control unit
2 20A Engine control unit
3 10 A. Engine control unit
4 15A Engine control unit
5 20A Engine control unit
6 40A Engine control unit
7 50A Coolant pump
R1 Main DDE relay
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Right-hand fuse box in engine compartment

Number Amperes [A] Description
FL1 50A (also 80 A)
(also 125 A)
Shut-off relay
FL2 125A Electronic Power Steering (EPS)
FL3 100A Additional heater
FL4 40A Heated fuel filter
FL5 40A Dynamic Stability Control (DSC)
FL6 40A Blower motor

Fuse and relay box in the trunk

The scheme of the fuse box

Number Amperes [A] Description
1 5A Camera control unit
2 15A Radio control unit
3 Not used
4 Not used
5 Not used
6 5A Sound system
7 Not used
8 Not used
9 5A Telematics
10 20A Radio control unit
11 30A Hi-Fi amplifier
12 Not used
13 Not used
14 20A Trailer towing module
15 20A Trailer towing module
16 Not used
17 Not used
18 Not used
19 Not used
20 Not used
21 Not used
22 5A Microwave sensor siren
23 5A Remote control receiver, Vacuum leak detection
24 Not used
25 Not used
26 Not used
27 Not used
28 Not used
29 Not used
30 Not used
31 Not used
32 Not used
33 10 A. Sound system
34 5A DVD player
35 5A Base tiles
36 Not used
37 Not used
38 Not used
39 Not used
40 Not used
41 Not used
42 Not used
43 Not used
44 Not used
45 Not used
46 20A Trailer socket
47 Not used
48 Not used
49 30A DC-DC converter
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Fuse box in the trunk on the right side

Number Amperes [A] Description
FL1 50A Rear module
FL2 100A Fuse box
FL3 100A Power distribution
FL4 125A Main DDE relay
FL5 125A Integrated power module

Additional fuses in the passenger compartment

Number Amperes [A] Description
1 Not used
2 Not used
3 Not used
4 30A Passenger’s electric window
5 20A Central lock
6 30A Electric driver’s window
7
8 Not used
9 Not used
10 5A Control panel;

Driving Assistant System;

Heating, ventilation and air conditioning (HVAC);

Light switch.

11 7.5A Rear module;

Left headlight.

12 7.5A Diagnostic socket
13 5A Telematics
14 15A Horn

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