BMW E46 Fuses and Relays Location Diagrams [Definitive Guide] (2024)

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BMW 3 Series E46 Fuses and Relay Diagrams

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In this guide, we'll explain the location of the fuses and relays in the BMW 3 Series E46 (1998 - 2006).

In this guide, we will try to figure out where the fuses and relays are located on BMW 3 series E46 generation cars (1998 – 2006).

Fuse Box in the Glove Compartment

The main fuse box is located in the glove compartment. You will see two white latches (left and right) that need to be turned to open the fuse box.

No special tool is needed to replace the fuses, however, in the center of the fuse box you will find special red forceps (tweezers). With their help, it becomes much easier to remove the fuse from the socket.

Next to the box you will also find a diagram of the location of all fuses.

Fuse Number	Amperage	Protected Circuits
F1		–
F2		–
F3		–
F4		–
F5	5A	Horn relay
F6	5A	Vanity mirror lamps, convertible top control module
F7	5A	Convertible top actuation switch, navigation system control module, audio unit output amp lifier, digital multifunction display, telephone audio unit
F8	5A	Sequential mechanical gear box-M3
F9	5A	Steering wheel controls-cruise control, brake pedal position (BPP)switch, multifunction control module, headlamp switch, clutch pedal position (CPP)switch
F10	5A	Instrument panel
F11	5A	SRS control module, electric seats, seat belt warning system
F12	7,5A	Multi switch assembly
F13	7,5A	Roll bar control module
F14	5A	Immobilizer control module, transmission shift hold switch
F15	5A	Rain sensor, rear screen wash/wipe system
F16		–
F17		–
F18		–
F19		–
F20		–
F21		–
F22	5A	Sequential mechanical gear box-M3
F23	5A	Engine coolant pump motor- Diesel
F24	5A	Anti-dazzle interior mirror, parking aid control module
F25	5A	Electric door mirror, passenger’s side, wind screen washer jet temperature switch
F26	5A	Garage door opener
F27	10A	Reversing lamp/s relay, transmission gear position switch
F28	5A	AC control module, AC compressor clutch relay
F29	5A	Engine control module(ECM), ignition coil relay
F30	7,5A	Alternator, engine oil level sensor, data link connector (DLC)-16pin
F31	5A	Tyre pressure monitor control module
F32	5A	Headlamp switch, head lamp control module- LH(gas discharge headlamps),head lamp control module-RH(gas discharge headlamps)
F33	5A	Multi switch assembly, ABS control module – with ASC, steering position sensor
F34	5A	Instrument panel
F35	50A	Convertible top motor relay
F36	50A	Secondary air injection (AIR) pump relay
F37	50A	Engine coolant blower motor
F38	10A/15A	Fog lamps relay
F39	5A	Telephone, voice synthesizer
F40	5A	Transmission selector lamp, steering position sensor- DSC
F41	30A	Digital multifunction display, audio unit output amplifier, audio unit CD changer, audio unit, navigation system control module
F42	30A	Multi switch assembly
F43	5A	Instrument panel
F44	20A	Trailer socket
F45	20A	Rear screen wash/wipe system
F46	20A/30A	Convertible top control module, sunroof control module, convertible top compartment lid motor relay
F47	20A	Cigarette lighter-front, auxiliary power socket
F48	30A	Multifunction control module
F49	5A	Multifunction control module, audio unit output amplifier
F50	40A	AC/heater blower motor switch
F51	30A	Headlamp washer control module
F52	30A	Multifunction control module
F53	30A	ABS control module
F54	15A/20A	Fuel pump relay
F55	15A	Horn relay
F56	30a	ABS control module
F57	5A	Door mirror retract control module, door mirror control module, driver’s side, door mirror control module, passenger’s side
F58	7,5A	Tailgate window relay
F59	30A	Windscreen wiper motor relay
F60	25A	Multifunction control module
F61	30A	ABS control module – with DSC
F62	7,5A	Engine coolant heater regulator valve
F63	7,5A	AC compressor clutch relay
F64	20A	Auxiliary heater control module
F65	30A	Seat operating switch, driver’s side
F66		–
F67	5A	Immobilizer control module, anti-dazzle interior mirror, alarm system in car movement control module, alarm system gradient sensor, alarm system horn
F68	30A	Heated rear window relay
F69	5A	Tyre pressure monitor control module
F70	30A	Seat operating switch, passenger’s side
F71	10A/30A	Multifunction control module

There are also four relays located behind the duffel box: the fuel pump relay, the backup relay, the fog lamp relay and the audio signal relay.

Relay Number	Relay Assignment
1	Fuel pump relay
2
3	Fog lamps relay
4	Horn relay

A few more fuses are behind the glove compartment.

Fuse Number	Amperage	Protected Circuits
F101	50A	Engine coolant blower motor
F102	80A	Engine control (EC)relay, engine control module(ECM), transmission control module(TCM), fuse boxes/relay plates- LH rear engine compartment(F5)
F103		–
F104	100A	Glow plug control module
F105	50A	Starter switch, datalink connector (DLC)-20pin
F106	50A	Starter switch, headlamp switch
F107	50A	Headlamp switch, trailer control module

Fuse box in the Engine Compartment

Another fuse box is located in the engine compartment – in the rear of the engine compartment, near the wipers.

Fuse Number	Amperage	Protected Circuits
1		Engine control module(ECM)
2		Transmission control module(TCM)
3		Windscreen wiper motor relay
4		Engine control (EC) relay – petrol
5		Engine control (EC) relay – Diesel
6		Reversing lamp/s relay
F1	30A	Ignition coils-320i with MS43/325i/330i
F2	30A	Engine control module (ECM), reversing lamp/s relay, transmission control module (TCM) – 316i/318i
F3	20A	Mass airflow (MAF) sensor, crankshaft position (CKP) sensor, reversing lamp/s relay, engine coolant thermostat, camshaft position (CMP) sensor 1, camshaft position (CMP) sensor 2-320i/325i/330i
F4	30A	Fuel pump relay, secondary air injection (AIR) pump relay, AC compressor clutch relay-316i/318i/330i
F5	30A	Ignitioncoilrelay-316i/318i/320i/323i/328i

How do I check the relay?

The easiest way to check the relay is to replace it with a known working relay. Relays are usually checked in this way at service stations. However, it is not always possible to quickly get the right relay at home, so we recommend the following way to check the so-called working relays, which include, for example, relays for the main and fog lights:

Remove the relay from the connector.
First check with a probe whether voltage is present at pin 30 of the relay’s connector. To do this, connect the tester to the ground and touch pin 30 of the connector with the tester lead. If there is voltage, the tester LED will illuminate. If the LED does not illuminate, find and repair the break in the circuit between the positive terminal of the battery and pin 30 of the relay connector.
Make a jumper from a piece of insulated wire by stripping the ends
Using the jumper fabricated, connect pin 30 of the relay connector (where the battery voltage is permanently present) to pin 87.
If the corresponding circuit closes when the jumper is installed (e.g. high beam comes on), then the corresponding relay is in good condition.
If the circuit does not close (e.g. the high beam still does not come on), find and repair the break in the circuit between pin 87 of the relay connector and the corresponding consumer.
If necessary, install a new relay

Original Fuse Code Numbers

Amperage	Catalogue Number
3 A	61 13 1 394 461
5 A	61 13 1 386 626
7,5 A	61 13 1 370 987
10 A	61 13 1 386 627
15 A	61 13 1 372 626
20 A	61 13 1 386 848
25 A	61 13 1 372 627
30 A	61 13 1 372 628
40 A	61 14 6 953 473