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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

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