BMW 3-Series (E46; 1998-2006) fuses and relays

 

In this article, we consider the fourth generation BMW 3-Series (E46), produced from 1998 to 2006. Here you will find fuse box diagrams of BMW 3-Series 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 and 2006 (316i, 318i, 318d, 320i, 320d, 323i, 325i, 328i, 330i, 330d), get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

Fuse Layout BMW 3-Series 1998-2006

Fuse box in the glove compartment

Fuse Box Location

Open the glove compartment, turn the two clamps, and pull the panel down for access the fuses.

Fuse box diagram

Instrument panel fuse box diagram: BMW 3-Series (E46; 1998, 1999. 2000, 2001, 2002, 2003, 2004, 2005, 2006)

Assignment of the fuses in the glove compartment

A Protected components
1 Not used
2 Not used
3 Not used
4 Not used
5 5 Horn relay
6 5 Make-up mirror light, driver’s side
Make-up mirror light, passenger’s side
Convertible soft top control unit
7 5 Radio control unit
Aerial amplifier AM/FM (with remote control central locking)
On-board monitor control unit
Spatial sound switch
Interface
Navigation computer
GPS receiver
Transceiver/charging electronics
Pushbutton, convertible soft top closed
Basic interface telephone
Voice input
Diversity
Eject box
Telematics control unit (TCU-Everest)
Universal electronic charging and hands-free module (ULF)
8 5 Sequential mechanical gear
9 5 up to 03.2001 (BMS46):
General module control unit
Light switching centre control unit
Cruise control module
Brake light switch
Volute spring
03.1998-09.1999 (MS42 or DDE3.0):
Volute spring
General module control unit
Brake light switch
Light switching centre control unit
09.1999-03.2001 (MS42, MS43, MSS54, DDE3.0, DDE4.0):
Volute spring
General module control unit
Brake light switch
Light switching centre control unit
Clutch switch
as of 03.2001:
Volute spring
General module control unit
Brake light switch
Light switching centre control unit
Clutch switch module
10 5 Instrument cluster control unit
11 5 Multiple Restraint System II:
Sensor for LH side airbag (satellite)
Sensor for RH side airbag (satellite)
Multiple restraint system control unit
Hall sensor, driver’s seat belt buckle
Hall sensor, passenger’s seat belt buckle (USA)
Electronic seat control
Multiple Restraint System III/IV:
Multiple restraint system control unit
Hall sensor, driver’s seat belt buckle
Electronic seat control
Hall sensor, passenger’s seat belt buckle (USA)
12 7.5 03.1998-09.1999: Sun shade switch
as of 09.1999: Switch center
13 7.5 as of 03.2000: Rollover sensor
14 5 Electronic immobiliser control unit
Gearshift lock
15 5 Rain sensor
Intermittent wipe/wash control unit, rear (Touring)
16 Not used
17 Not used
18 Not used
19 Not used
20 Not used
21 Not used
22 5 S54: Sequential mechanical gear box
M47/TU and M57/TU: Digital diesel electronics control unit
23 5 Auxiliary water pump
24 5 Electrochromic interior rear-view mirror
Park distance control unit (PDC)
25 5 Outside mirror, passenger’s side
Thermal switch, heated spray nozzles
26 5 Garage door opener
27 10 Reversing light relay
Gear position switch (BMS46 with EGS 8.34)
Transmission control unit (BMS46 with GM5)
28 5 Heating and A/C control module
Heating blower relay
Relay, A/C compressor
Dual-function switch recirculated air/rear window defogger
Temperature switch
Rear window defogger relay (convertible)
29 5 Digital motor electronics control unit (BMS46, MS42, MS43, MSS54)
Unloader relay terminal 15 (BMS46, ME9)
Digital diesel electronics control unit (DDE3.0, DDE5)
Transmission control unit (ME9 with Automatic transmission)
30 7.5 Oil level sensor
Alternator
Temperature switch (up to 09.1998; MS42)
Transmission control unit
Data link connector
Diesel:
Oil level sensor
Data link connector
Transmission control unit (as of 06.2000; DDE3.0)
31 5 03.1998-09.1998: Mirror adjustment switch
09.1998-09.2001: Tyre pressure control system control unit
as of 09.2001:
Mirror adjustment switch
Control unit, tyre defect indicator (RPA) (all-wheel drive with DDS)
Tyre pressure control system control unit (without all-wheel drive with DDS)
32 5 without Xenon lights: Light switching centre control unit
Xenon lights:
Light switching centre control uni
Xenon headlight, left
Xenon headlight, right
Control unit for adaptive headlight (03.2003-09.2003; Convertible and Coupe)
Xenon lights (as of 09.2003):
Light switching centre control uni
Control unit for adaptive headlight (Convertible)
33 5 03.1998-09.1999:
ASC/DSC button
ABS/DSC unit (with DSC)
without all-wheel:
Switch center
Steering angle sensor (with DSC)
ABS/DSC unit
up to 03.2001 (all-wheel drive):
Switch center
Steering angle sensor, DSC
ABS/DSC unit
as of 03.2001 (all-wheel drive): Switch center
34 5 Instrument cluster control unit
Fuel pump control (EKPS) (only MS45)
35 50 all-wheel drive: ABS/DSC unit
Convertible: Relay, convertible top drive
36 50 Secondary air pump relay
37 50 03.1998-09.1998: Heating blower relay
09.1998-09.1999:
Blower switch (with IHS)
Blower output stage (with IHKA)
as of 09.1999: Electric fan
38 10 Fog light relay
39 5 Transceiver/charging electronics
Motorola (03.1998-09.1999): Transceiver/charging electronics
Nokia:
Transceiver/charging electronics (up to 09.1999)
Compensator
Basic interface telephone (as of 09.1999)
Voice input (as of 09.1999)
Telephone provision:
Transceiver/charging electronics
Compensator
JBIT: Basic interface telephone
39 10 Siemens:
Voice input
Basic interface telephone
Eject box
Motorola (as of 06.2000):
Voice input
Compensator
Transceiver/charging electronics
Interface
Telematics Control Unit:
Voice input
Telematics control unit (TCU-Everest)
Eject box
Aerial splitter (Coupe, Convertible as from 2004_09)
ULF:
Compensator
Universal electronic charging and hands-free module (ULF)
40 5 without all-wheel (up to 09.2001): Gear indicator light
without all-wheel (as of 09.2001):
Steering angle sensor, DSC
Gear indicator light (only USA)
all-wheel drive: Steering angle sensor, DSC
41 30 On-board monitor control unit
Amplifier
Radio control unit
CD changer
Subwoofer box
Navigation computer
Video module control unit
Switch center
42 30 Switch center
43 5 Instrument cluster control unit
Data link connector (only USA)
44 20 Trailer socket
45 20 Touring: Intermittent wipe/wash control unit, rear
46 20 Convertible soft top control unit
Sunroof module control unit
Relay, convertible top 1
47 15 up to 03.1999: Cigarette lighter, front
47 20 as of 03.1999:
Cigarette lighter, front
Oddments compartment, left (except Touring)
Oddments compartment, right (except Touring)
12 V socket
48 30 General module control unit
49 5 General module control unit
Aerial amplifier AM/FM (with remote control central locking)
50 25 up to 09.1999: Ignition switch
50 40 as of 09.1999:
Blower switch (with Heater control)
Blower output stage (without Heater control)
51 30 Headlight washer module
52 30 General module control unit
53 30 ABS/ASC unit
54 15 Fuel pump relay 1
54 25 DDE4.0: Fuel pump relay 1
54 20 DDE5.0: Fuel pump relay 1
MS45: Fuel pump control (EKPS)
55 15 Horn relay
56 30 ABS/ASC unit
57 5 Outside mirror fold-in control unit
Mirror memory control unit, driver’s side (up to 03.2003)
Mirror memory control unit, front passenger’s side (up to 03.2003)
Driver’s side outside mirror with memory (as of 03.2003)
Passenger’s side out-side mirror with memory (as of 03.2003)
Mirror memory control unit, driver’s side (as of 03.2003; Coupe, Convertible)
Mirror memory control unit, front passenger’s side (as of 03.2003; Coupe, Convertible)
Power window motor, driver’s door with anti-trap protection function (as of 03.2003; Compact, Convertible with SPMFT)
Power window motor, passenger’s door with anti-trap protection function (as of 03.2003; Compact, Convertible with SPMFT)
58 7.5 Touring: Relay, rear window drive
as of 03.2003; (Coupe, Convertible): Control unit for adaptive headlight
59 30 Wiper relay
60 25 General module control unit
61 30 ABS/DSC unit
62 7.5 Water valves
63 7.5 Relay, A/C compressor
64 20 Independent park heating control unit
64 5 DDE5: Transmission control unit
65 30 03.1998-09.1999:
Driver’s seat memory control unit
Driver’s lumbar support switch
as of 09.1999:
Driver’s seat adjustment switch
Driver’s lumbar support switch (convertible)
66 5 MS43 with SMG: Ignition switch
67 5 Electronic immobiliser control unit
Electrochromic interior rear-view mirror
Control unit, interior protection I
Control unit, interior protection II (convertible)
Tilt monitoring
Horn for antitheft alarm system
68 30 Rear window defogger relay
69 5 Tyre pressure control system control unit
70 30 with SMF (Saloon, Touring): Seat adjustment switch, front passenger’s seat
without SMF (Saloon, Touring): Passenger’s lumbar support switch
Compact, Coupe: Control unit, front passenger seat memory
Convertible:
Control unit, front passenger seat memory
Passenger’s lumbar support switch
71 30 4-door: General module control unit
71 10 2-door: General module control unit
72 Not used
73 Not used

Passenger Compartment Fuse Box (Behind Glovebox)

Passenger Compartment Fuse Box (Behind Glovebox)

A Protected components
101 50 03.1998-09.1998: Electric fan
102 80 MSS54:
Fuse carrier, engine electronics (fuse No.5 (30A))
DME relay
Digital motor electronics control unit
SMG control unit
MS43:
Fuse carrier, engine electronics (fuse No.5 (30A))
DME relay
Digital motor electronics control unit
Transmission control unit
BMS46, MS42: B+ terminal
ME9: B+ potential distributor
103 Not used
104 100 Preheater relay
105 50 Ignition switch
Diagnosis plug
106 50 Ignition switch
Light switching centre control unit
107 50 Trailer module
Light switching centre control unit

Rear Fuse box

Rear Fuse box

A Protected components
108 200 Fuse: 35-71, 101-107
203 100 DDE relay
Fuse carrier, engine electronics (fuse No.4 (30A) – DDE4.0 or EGS Transmission control GM5)

Relay holders (Behind Glovebox)

Relay holders (Behind Glovebox)

Component
K2 Horn relay
K4 03-1998-09.1998: Heating blower relay IHS
K19 as of 09.1998: Relay, A/C compressor
K47 Fog light relay
K96 Fuel pump relay 1

K4 – Heating blower relay IHS (rear of center console; as of 09.1998)

K6 – Headlight washer module

Behind glovebox

K19 – Relay, A/C compressor (03.1998-09.1998)

Behind glovebox


K13 – Rear window defogger relay

Saloon, Coupe (Right-hand side of luggage compartment)

Touring (Right-hand side of luggage compartment)

Convertible (Side section right (trim panel removed) (K13, K99 – Rear defogger relay))

Compact (In the electronics box under control units)

K90 – Relay, rear window drive (Touring)

Behind right-hand footwell trim

K96 – Fuel pump relay 1 (USA, MSS54)

Side section right (trim panel removed)

Electronics box (in the engine compartment)

The location of the fuses in the engine compartment: BMW 3-Series (E46; 1998, 1999. 2000, 2001, 2002, 2003, 2004, 2005, 2006)

K11 – Wiper relay

Rear LH side of engine compartment in electronics box

K2003 – DDE relay

DDE3.0 (Diesel Electronics)

DDE4.0 (Diesel Electronics)

M47/TU, M57/TU
A8682 – Fuse carrier, engine electronics

K2283 – Preheater relay

DDE3.0 (Diesel Electronics)

DDE4.0 (Diesel Electronics)

K5360 – Relay, hydraulic pump (SMG)


K6300 – DME Relay

BMS46, ME9, MS42. MS43, MS45, MSS54

N46

K6304 – Secondary air pump relay

K6316 – Relay, variable valve timing gear

ME9 (In water box right (battery removed))

N46

K6318 – Hydraulic pump relay, SMG

K6325 – Reversing light relay

MS42, BMS46, MS43, ME9, MS45

N46

M47/TU, M57/TU


K6326 – Unloader relay terminal 15

MS42, BMS46, ME9

N46

K6327 – Relay, fuel injectors

MS43, MSS54, MS45

K18363 – Relay, convertible top 1

Behind glovebox


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