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.

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 unit is located at the rear of the engine compartment, next to the windshield wipers.

Access example.

Diagram
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

Relays

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

Located on the passenger side behind the glove box. On its reverse side are some relays.

General view of the board. 

Diagram
No.	Decryption	A
1-4	—
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
16-21	—
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
66	—
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
F103	—
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

Relays

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
29
30
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)