Mercedes-Benz B-Class is a series of compact cars by the German automaker. It was first introduced in 2005 at the Geneva Motor Show, and was preceded by the Vision B concept car. It is produced in Rastatt. In this article we will understand in detail fuse box diagrams Mercedes W245 B-Class (1st gen; B160, B170, B180, B200) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 years of manufacture
Here you will find the locations and photos of the mounting blocks. Also, we will separately mark the fuses responsible for the cigarette lighter and the fuel pump.
In the passenger compartment
Here there are two units responsible for the protection of the vehicle's electrical circuits.
Fuse box
It is located in the front passenger footwell. It can be accessed by removing the floor pan.
General view of the Mercedes B-Class W245 cabin fuse box.
Relay box
The optional K100 wiring block with relay modules is located under the instrument panel.
1. Remove the trim under the glove compartment.
2. Remove the panel near the door.
All electrical equipment
General layout of the electrical system in the vehicle.
1. ABS module;
2. Heater/air conditioner fan motor resistor;
3. Air conditioning/heater control module-behind the air conditioning/heater control panel;
4. Air conditioning/heating humidity sensor on the intake system resonator;
5, 6. Antenna on the roof panel;
7. impact sensor, driver's side;
8. Impact sensor, passenger side;
9. Anti-theft system control unit;
10. Anti-theft system siren on the intake system resonator;
11. Sun sensor;
12. Audio amplifier - behind the right rear side trim panel;
13. Auxiliary heater control module-in the air conditioner control panel;
14. Battery - footwell;
15. CAN data bus, gateway control unit, audio system - behind the right rear side trim panel;
16. CAN data bus, gateway control unit - behind the instrument panel;
17. Compass control unit behind the instrument cluster;
18. Diagnostic connector (DLC);
19. Driver's door electrical control unit - in the door;
20. Electrical control unit for the left rear door - in the door;
21. Electrical control unit for the right rear door - in the door;
22. Passenger door electrical control unit-in the door;
23. Engine-Diesel ECU;
24. ECU - gasoline;
25. Relay box, instrument panel;
26. Fuse box, footwell;
27. Xenon headlight control unit, left. - under the left headlight;
28. Xenon headlight control unit, right. - under right headlamp;
29. Headlamp corrector motor, left;
30. Headlight correction motor, right;
31. Horn (beep);
32. Ignition switch control module;
33. Immobilizer ECU - in ignition switch control module;
34. Immobilizer ring antenna - in ignition switch control unit;
35. ECU for the gas filling system;
36. Multifunction control unit - functions: Brake fluid low level sensor, central locking, coolant level sensor, exterior lamps, interior lamps, hazard warning light, turn signal indicators, rear window heater, horn, reverse light switch, tailgate opening actuator, windshield wiper/washer, rear window wiper/washer;
37. Multimedia control unit;
38. Multifunction switch control unit;
39. Navigation system control unit - in the audio system unit;
40. Outside temperature sensor - behind the bumper;
41. Parktronic control module - behind the right rear side trim panel;
42. Power steering control module - on the steering rack;
43. Rain sensor - top center of the windshield;
44. Steering column electrical control unit - under the steering wheel;
45. Steering column lock control unit - on the steering column;
46. Subwoofer - behind the left rear side trim panel;
47. SRS ECU - under the center console;
48. Phone interface control unit - under the seat;
49. Trailer electrical control unit - in the rear rear side trim panel;
50. Transmission ECU - in the transmission;
51. Gearshift control unit - selector lever.
Very helpful