BMW expanded its crossover lineup in 2003 with the introduction of the compact X3 model. The vehicle is built on the same platform as the 3 Series. Its design retains the features and proportions of the larger X5. In this article, we provide a detailed overview of the fuse box diagrams for the first-generation BMW X3 (E83), covering model years 2003 through 2010, including the 2.0d, 2.5i, 3.0d, xDrive18d, xDrive20d, xDrive25i, xDrive30d, xDrive30i, and xDrive35d variants.
Below, you will find the locations and photographs of the power distribution boxes. The fuses for the “Cigarette Lighter” and “Fuel Pump” are highlighted in bold.
Luggage Compartment
The main power distribution block is located directly on the battery.
| Diagram | ||
|---|---|---|
|
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| No. | Description | Rating (A) |
| 3 | Passenger compartment fuse/relay box 1 — fuses F35–F63, F65–F71; Passenger compartment fuse/relay box 2 — fuses F102, F104–F107 | 250 |
| 1 | Luggage compartment fuse/relay box 2 — fuse F80 (without audio system output amplifier / with standard stereo speakers) | 40 |
| 2 | Engine control relay — Diesel | 100 |
| 5 | Transfer case control module | 40 |
| 4 | Audio system output amplifier | 30 |
The rear window defogger relay module is located beneath the right-hand side trim panel.
Passenger Compartment
The primary fuse box is located behind the glove box. To access it, release the two retaining clips and lower the panel.
Example of access.
General view of the BMW X3 passenger compartment fuse box.
| Diagram | ||
|---|---|---|
|
||
| No. | Description | Rating (A) |
| F1 | Unused | |
| F2 | Unused | |
| F3 | Unused | |
| F4 | Unused | |
| F5 | Horn | 5 |
| F6 | Vanity mirror illumination | 5 |
| F7 | Audio system / navigation system / telephone (from 09/2005) | 5 |
| F8 | Unused | |
| F9 | Brake pedal switch, clutch pedal switch, headlamp switch, multifunction control module (GM), steering column control module (SZL) | 5 |
| F10 | Instrument cluster | 5 |
| F11 | Supplemental Restraint System (SRS) control module | 5 |
| F12 | Center console switch center | 7.5 |
| F13 | Unused | |
| F14 | Electronic immobilizer (EWS) control module | 5 |
| F15 | Solar sensor, rain/light sensor, rear window wiper/washer | 5 |
| F16 | Unused | |
| F17 | Unused | |
| F18 | Unused | |
| F19 | Unused | |
| F20 | Unused | |
| F21 | Unused | |
| F22 | Engine control module (ECM) — Diesel | 5 |
| F23 | Headlamp leveling control module | 5 |
| F24 | Auto-dimming interior rearview mirror, Park Distance Control (PDC) module | 5 |
| F25 | Passenger side power exterior mirror, heated washer nozzles (from 03/2004) | 5 |
| F26 | BMW X3 (E83) cigarette lighter fuse, transfer case control module | 5 |
| F27 | Reverse gear switch, reversing lamp relay | 10 |
| F28 | Climate control (HVAC) system, rear window defogger relay | 5 |
| F29 | Engine control module (ECM), ignition coil relay | 5 |
| F30 | Data Link Connector (DLC), engine oil level sensor, fuel heater (Diesel), transmission control module (TCM) | 7.5 |
| F31 | Driver's door control module | 5 |
| F32 | Headlamp switch (from 09/2006) | 5 |
| F33 | Center console switch center | 5 |
| F34 | Instrument cluster, fuel pump control module (EKP) | 5 |
| F35 | ABS/DSC control module | 40 |
| F36 | Fuel heater, secondary air injection pump relay | 60 |
| F37 | Electric cooling fan | 60 |
| F38 | Fog lamp relay | 15 |
| F39 | Telephone control module, telephone interface module, telephone antenna (up to 09/2005) | 5 |
| F40 | Steering angle sensor, automatic transmission gear indicator illumination | 5 |
| F41 | Audio system, audio system output amplifier | 30 |
| F42 | Audio/navigation system, CD changer, multi-information display, TV tuner | 10 |
| F43 | Data Link Connector (DLC), multifunction control module | 5 |
| F44 | Trailer wiring harness receptacle | 20 |
| F45 | Rear window wiper | 20 |
| F46 | Power sunroof control module | 20 |
| F47 | BMW X3 (E83) cigarette lighter, auxiliary power outlet | 20 |
| F48 | Multifunction control module (GM) | 30 |
| F49 | Antenna amplifier, multifunction control module | 5 |
| F50 | HVAC blower motor | 40 |
| F51 | Headlamp washer pump relay | 30 |
| F52 | Multifunction control module | 30 |
| F53 | ABS/DSC control module | 25 |
| F54 | Fuel pump control module, fuel pump relay | 20 |
| F55 | Horn relay | 15 |
| F56 | Electronic transmission control module (up to 03/2007) | 5 |
| F57 | Driver's door control module, exterior mirror position sensor, power window switch | 7.5 |
| F58 | Headlamp leveling control module (up to 03/2007) | 7.5 |
| F59 | Windshield wiper motor relay | 30 |
| F60 | Multifunction control module | 25 |
| F61 | Center console switch center | 30 |
| F62 | Auxiliary heater | 7.5 |
| F63 | A/C compressor magnetic clutch relay | 7.5 |
| F64 | Unused | |
| F65 | Driver's power seat control module, driver's seat lumbar support pump switch (from 03/2007) | 30 |
| F66 | Ignition switch | 10 |
| F67 | Tilt alarm sensor, anti-theft alarm siren, interior motion sensor, electronic immobilizer, auto-dimming interior rearview mirror | 5 |
| F68 | Rear window defogger | 30 |
| F69 | Servotronic control module, Tire Pressure Monitoring System (TPMS) module | 5 |
| F70 | Passenger power seat control module, passenger seat lumbar support pump switch (up to 03/2007) | 30 |
| F71 | Multifunction control module | 30 |
| Fuses located behind the primary fuse box | ||
|
||
| F102 | Jumper link — 2.0i / 2.5i Gasoline (M54, N46) | 80 |
| F105 | Ignition switch | 50 |
| F106 | Ignition switch, light control module (LCM) | 50 |
| F107 | Light control module (LCM), trailer control module | 50 |
| Relay modules located behind the glove box (at the bottom of the primary fuse panel). | ||
|
||
| 1 | Horn relay | |
| 2 | Fog lamp relay | |
| 3 | A/C compressor magnetic clutch relay | |
| 4 | Fuel pump relay | |
| 5 | — | |
| 6 | Secondary air injection pump relay | |
| 7 | Headlamp washer pump relay | |
| 8 | Headlamp leveling relay | |
| 9 | Servotronic (power steering) relay | |
| 10 | Multifunction control module 1 (functions: anti-theft alarm, headlamp washers, interior rearview mirror, rear window wiper/washer, windshield wiper/washer) | |
Engine Compartment
The electronics box (E-box) is located on the left side of the engine compartment, beneath the plastic cover.
| Diagram | ||
|---|---|---|
|
||
| No. | Description | Rating (A) |
| F1 | Engine control system components | 20 |
| F2 | Engine control module (ECM) | 20 |
| F3 | Engine control system components, reversing lamp relay — 2.5i Gasoline (M54) | 20 |
| F4 | Engine control module, ABS module | 10 |
| F5 | Ignition coil relay — 2.0i Gasoline (N46) | 30 |
| 1 | Engine control module (ECM) | |
| 2 | Transmission control module (TCM) | |
| 3 | Ignition coil relay — 2.0i Gasoline (N46) | |
| 4 | Engine control relay — Gasoline | |
| 5 | Reversing lamp relay | |
| 6 | — | |
| 7 | Engine control relay — Diesel | |
| 8 | Windshield wiper motor relay | |
| Reverse side | ||
|
||
| 1 | Valvetronic relay (variable valve lift) | |
| 2 | Crankcase ventilation heater relay | |
Electrical Component Locations
General layout of electronic control modules and components within the vehicle:
1. ABS control module;
2. Climate control (HVAC) module;
3. Antenna signal amplifier — left rear pillar trim;
4. Antenna signal amplifier — right rear pillar trim;
5. Front impact sensor, left — behind the headlamp;
6. Front impact sensor, right — behind the headlamp;
7. Side impact sensor, left;
8. Side impact sensor, right;
9. Tilt alarm sensor (anti-theft system) — under the floor;
10. Anti-theft alarm siren — on the intake system resonator;
11. Interior motion sensor (anti-theft system) — integrated into the overhead dome light;
12. Solar sensor — upper center of the windshield;
13. Audio system output amplifier;
14. Auxiliary heater;
15. Battery — spare tire well;
16. Data Link Connector (DLC);
17. Multi-information display / TV tuner;
18. Driver's door control module;
19. Passenger door control module;
20. Engine control module (ECM);
21. Fuel pump control module (EKP);
22, 23. Engine compartment fuse and relay box;
24. Primary fuse box — passenger compartment, behind the glove box;
25. Auxiliary fuse carrier — behind the primary fuse box;
26. Relay modules — bottom of the primary fuse box;
27, 28. Luggage compartment fuse boxes — next to the battery and under the load floor;
29. Rear window defogger relay;
30. Horn 1;
31. Horn 2;
32. Electronic immobilizer (EWS) control module;
33. Instrument cluster;
34. Light control module (LCM);
35. Navigation system control module;
36. Ambient air temperature sensor;
37. Park Distance Control (PDC) module — under the floor;
38. Rain/light sensor — upper center of the windshield;
39. Rear window wiper/washer control module — in the tailgate;
40. Driver's power seat control module — under the seat;
41. Steering column control module (SZL);
42. Steering angle sensor;
43. Power sunroof control module;
44. Supplemental Restraint System (SRS) control module;
45. Telephone control module;
46. Trailer control module — under the floor;
47. Transfer case control module — under the floor;
48. Electronic transmission control module (TCM);
49. Tire Pressure Monitoring System (TPMS) module;
50. Yaw rate/lateral acceleration sensor.
