Fuses and relays BMW 3 Series (E46, 1998 - 2007)

BMW E46 is the fourth generation of the 3rd series of passenger cars of the German automaker. A wide range of engines, five body types to choose from, plus sports modifications ensured the commercial success of this generation. In this material, we will analyze in detail the fuse diagrams of the 4th generation BMW 3 series (316Ci, 316i, 316ti, 318d, 318i, 320d, 320i, 323i, 325i, 325xi, 328i, 330d, 330i, 30xd, m3) in the e46 body: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 release.

General view of the car
Here you will find the locations and photos of the mounting blocks. Separately, we note the fuses responsible for the cigarette lighter and fuel pump.

In the engine compartment

Fuse box

The location of the fuse box in the engine compartment of the car
The unit is located at the rear of the engine compartment, next to the windshield wipers.

Access example.

No. Decryption A
F1 Ignition Coils - 320iсMS43/ 325i/330i 30
F2 ECM, Reverse Light(s) Relay, TCM - 316i/318i 30
F3 Air Mass Sensor, Crankshaft Position Sensor, Reverse Lamp(s) Relay, Coolant Thermostat, Camshaft Position Sensor 1, Camshaft Position Sensor 2 - 320i/325i/330i 20
F4 Fuel Pump Relay, Exhaust Air Pump Relay, A/C Compressor Magnetic Clutch Relay - 316i/318i/330i 30
F5 Ignition Coil Relay - 316i/318i/320i/ 323i/328i 30
1 Engine ECU
2 transmission control unit
3 Windshield wiper motor relay
4 engine management system - gasoline
5 engine management system - Diesel
6 Reverse lamp relay


Location of relay modules in the engine compartment.

No. Purpose
R1 valve timing relay
R2 DDE main relay
R3 heating relay
R4 Hydraulic pump
R5 DME relay
R6 Wiper relay
R7 hydraulic pump relay
R8 reversing lamp
R9 Unloader relay, terminal 15
R10 fuel injectors

In the passenger compartment

Fuse box

Location of the main fuse box in the passenger compartment
Located on the passenger side behind the glove box. On its reverse side are some relays.

General view of the board. 

No. Decryption A
5 Horn relay 5
6 Vanity mirror lamps, sunroof control unit 5
7 Convertible roof switch, navigation control unit, audio output amplifier, multifunction display, telephone, audio system 5
8 Sequential manual transmission - M3 5
9 Steering Wheel Controls - Cruise Control, Stop Light Switch (Brake Pedal Position Sensor), Multifunction Control Module, Light Switch, Clutch Pedal Position Sensor 5
10 instrument cluster 5
11 SRS electronic control unit, power seats, seat belt warning system 5
12 Multifunction switch assembly 7.5
13 Safety arc drive control unit 7.5
14 Electronic immobilizer control unit, automatic transmission shift lock switch 5
15 Rain sensor, rear window wiper/washer
22 Sequential manual transmission - M3 5
23 Coolant Pump Motor - Diesel 5
24 Auto-dimming interior rear view mirror, parking system control unit 5
25 Power door mirror (passenger side), temperature switch (heated windshield washer nozzles) 5
26 Garage Door Remote Control System 5
27 Reverse Lamp(s) Relay, Transmission Shift Sensor 10
28 A/C ECM, A/C Compressor Magnetic Clutch Relay 5
29 ECM, ignition coil relay 5
30 Alternator, engine oil level sensor, diagnostic connector -16-pin 7.5
31 Tire pressure monitoring control unit 5
32 Light switch, headlight control unit - left (xenon headlights), headlight control unit - right (xenon headlights) 5
33 Multifunction switch, ABS-ECU with ASC, steering wheel position sensor 5
34 instrument cluster 5
35 Retractable roof motor relay 50
36 Exhaust air pump relay 50
37 Cooling fan motor 50
38 Fog lamp relay 10/15
39 Telephone, voice synthesizer 5
40 Gear selector lamp, steering wheel position sensor - DSC 5
41 Multifunction display, audio output amplifier, CD changer, audio system, navigation system control unit 30
42 Multifunction switch assembly 30
43 instrument cluster 5
44 Trailer electrical connector 20
45 Rear window cleaner/washer 20
46 Convertible roof drive control unit, sunroof control unit, convertible roof compartment lid motor relay 20/30
47 BMW 3 e46 cigarette lighter fuse - front, accessory connector 20
48 Multifunction control box 30
49 Multifunction control unit, audio output amplifier 5
50 A/C/Heater Fan Motor Switch 40
51 Headlight washer control unit 30
52 Multifunction control box 30
53 ABS electronic control unit 30
54 Fuel pump relay (fuel pump) 15/20
55 Horn relay 15
56 ABS electronic control unit 30
57 Fold Mirror Control Unit, Door Mirror Control Unit (Driver's Side), Door Mirror Control Unit (Passenger Side) 5
58 Rear Door Power Relay 7.5
59 Windshield wiper motor relay 30
60 Multifunction control box 25
61 Electronic control unit DBS-DSC system 30
62 Heater coolant regulator valve 7.5
63 A/C Compressor Magnetic Clutch Relay 7.5
64 Additional heater control unit 20
65 Driver's seat adjustment switch block 30
67 Immobilizer ECU, Auto-dimming interior rear view mirror, Anti-theft control unit (with volume control), Vehicle tilt sensor (anti-theft system), Anti-theft horn 5
68 Rear defroster relay 30
69 Tire pressure monitoring control unit 5
70 Passenger seat adjustment switch block 30
71 Multifunction control box 10/30
Relay on the back of the block
1 fuel pupm relay
2 heater fan
3 fog lights
4 horn
Power fuses in the cabin block
No. Decryption A
F101 Cooling fan motor 50
F102 Engine Control System Relay, ECM, TCM, Fuse/Relay Box Rear ^5) 80
F104 Glow plug control unit 100
F105 Starter switch, diagnostic connector -20-pin 50
F106 Starter switch, light switch 50
F107 Light switch, trailer electrical control unit 50


Cabin relay modules.

No. Purpose
R1 fan relay or not used
R2 Headlight washer relay
R3 A/C compressor or not used
R4 Relay, rear power windows
R5 secondary air pump relay
R1 Fuel module relay (fuel pump) / or empty
R2 Heated rear window relay
R3 moisture trap

General arrangement

Location of the electronic components.

No. Component
1 A/C Compressor Magnetic Clutch Relay - Behind Dashboard, Right
2 Electronic air conditioning control unit
3 Sunlight sensor (air conditioning system)
4 Antenna Signal Amplifier - C-pillar
5 Antenna Booster - LH Trunk - Convertible
6 Antenna signal booster -under rear spoiler -wagon
7 Side impact sensor - on the driver's side, under the seat (under the mat)
8 Side impact sensor - passenger side, under the seat (under the mat)
9 Vehicle tilt sensor (anti-theft system) - right side of the luggage compartment
10 Theft Deterrent System Horn - Intake Resonator
11 Anti-theft control module (with volume change control) - ceiling panel
12 Anti-theft system switch, hood - engine compartment, right rear - in the mounting block
13 Audio Output Amplifier - Behind Rear Left Trim Panel - Convertible
14 Audio Output Amplifier - LH Trunk
15 Additional heater control module
16 Battery - engine compartment, rear right - 4 cylinder engines
17 Battery - Luggage Compartment RH - 6 Cylinder/Diesel
18 Trunk/Rear Door Release Switch - LH Lower Access Panel
19 Folding roof compartment lid motor relay -behind instrument panel, right
20 Roof folding control module -behind rear left trim panel
21 Convertible roof relay - luggage compartment left side
22 Diagnostic connector (DLC)
23 Diagnostic Connector (DLC) - behind the dashboard, near the steering column (05/00^)
24 Rear view mirror control module, driver's side
25 Rear View Mirror Control Module, Passenger Side
26 Mirror folding control module - behind the glove box
27 Fuse box and relay in the engine compartment
28 Fuse and relay boxes in the cabin behind the glove box 
31 Headlight washer control module - behind the dashboard, on the right
32 Rear Defroster Relay - Luggage Compartment RH Front
33 Heated Rear Window Relay 1 - Behind Rear Right Trim Panel - Convertible
34 Rear Defroster Relay 2 - Behind Rear Right Trim Panel - Convertible
35 Heater Fan Relay - Behind Center Console
36 horn 1
37 horn 2
38 Electronic immobilizer control unit - near the steering column
39 Immobilizer ring antenna - near the ignition switch
40 Instrument Cluster Control Module - Behind Dashboard
41 Lighting control module - functions: Alarm relay, light switch, indicator relay, instrument cluster illumination rheostat
42 Multifunction switch assembly
43 Multifunctional control unit - behind the glove box - functions: Anti-theft system, rear-view mirror with auto-dimming, audio system, central locking, power windows, alarm lamps, interior lamps, SRS electronic control unit, rear parking lights, sequential manual transmission, windshield wiper / washer glass
44 Navigation control module - luggage compartment left side
45 Navigation system antenna - behind instrument cluster
46 Parking system control module - right side of the luggage compartment
47 Parking System Buzzer - Left Front Footwell
48 Rain sensor
49 Additional fuses - luggage compartment - on suspension cup
50 Power Seat Control Module - Under Seat, Driver's Side
51 Power Seat Control Module - Under Seat, Passenger Side
52 Exhaust Air Pump Relay - Behind Right Side Dashboard
53 Sunroof Motor Control Module - Roof Panel
54 SRS control module - under floor mat
55 Body height sensor (front), headlight corrector-wheel arch of the front right wheel
56 Body height sensor (rear), headlight corrector - rear right wheel arch
57 Telephone interface control module - under the center console, rear
58 Trailer Electrical Control Module - Right Side Luggage Compartment
59 Electronic gearbox control unit - engine compartment - in the mounting block
60 Tire pressure monitoring control module - behind the glove box
61 Vehicle Speed ​​Sensor - Right Rear Wheel Speed ​​Sensor
62 Windshield washer nozzle temperature sensor - under the bottom (front)
Related fuse diagrams

Thanks so much for helping how to locate fuse boxs on BMW Engines

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