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Mercedes-Benz A-Class (w168; 1997 - 2004)  Fuse Box Diagram

avatar Jonathan Yarden Mar 25, 2021 · 5 min. read

In this article you will find a description of fuses and relays Mercedes-Benz, with photos of block diagrams and their locations. Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.

Year of production: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004

Fuse box

Mercedes-Benz A-Class w168 - fuse box diagram

No. Fused function A
1 Gasoline engine:Control module, ISC (Idle speed control), AGR-Ventil, Lambda heater 1, Lambda heater 2, Diagnostic socket, Cruise control, Secondary air injection relay, Secondary air injection valve, Shut-off valve 20
Diesel engine:Diesel control module, Wastegate actuator, Throttle valve switchover valve, Exhaust gas recirculation pressure valve, Three-way catalytic converter temperature sensor 10
2 Gasoline/diesel engine control module, Ignition coils, Injection valves, FP relay module (coil), Electronic accelerator, Starter lockout relay 25
3 Electric fan (engine cooling), Electric fan (engine cooling) with air conditioning 30 40
4 Engine control module 7.5
5 Automatic clutch 40
6 FP relay module (gasoline) 30
7 Light module 40
8 Starter relay 30
9 Wiper motor 40
10 Rear wiper 20
Laminated roof 40
11 Combination switch (Wiper control, Headlamp flasher, Windshield washer pump (actuation)), RNS (Radio Navigations System) 15
12 Cigarette lighter, Glovebox illumination, Radio, CD changer, 12V socket in trunk 30
13 Front left power window or power window with excess force limiter
Front right power window
30 7.5 30
14* Instrument cluster (time functions), Wipe/wash pump relay, Mobile phone 15
15 Airbag control module, ACSR sensor (automatic child seat recognition), Side airbag sensor, Side airbag sensor 10
16 Exterior rearview mirror adjustment, Exterior rearview mirror heater, Parktronic 15
17 Fanfare horn 15
18 Instrument cluster, Transponder and RFL (radio frequency locking), Motor electronics relay, Fan relay 10
19 Trailer coupling 25
20 Trailer coupling 15
21 Trailer coupling 15
22 Sound system 25
23 Make UP mirror illumination 7.5
24 Not assigned
25 Not assigned
26 Not assigned
27 Not assigned
28 Instrument cluster, last Instrument cluster, last Excess force limiter control module (excess force limiter) 10
29 Central locking, Seat installation recognition unit 15
30 DAS transponder (drive authorization system) and RFL (radio frequency locking), Electric instrument cluster 7.5
31 Rear window defroster 25
32 Portable phone, Radio or RNS (Radio Navigations System), CD changer, Front dome lamp, Rear dome lamp 15
33 Front left power window, Front right power window 30
34 Heater booster/freeze protection (diesel) 30
35 ATA control module 2x light relay, Siren 10
36 Front heated seats 25
37 VGS program selector lever (fully integrated transmission control), Heater booster coolant circulation pump (diesel) 10
38 Air conditioning control module (A/C compressor), Blend air recirculation flap stepper motor, Interior sensor blower, Heated windshield washer nozzle 10
39 Light module, Backup lamp, manual transmission/ automatic clutch, VGS backup lamp (fully integrated transmission control) 7.5
40 Stop lamp, left, right and center (ABS brake signal), Steering angle sensor 10
41 Air conditioning control module, Diagnostic socket 10
42 Rear left power window, Rear right power window 30
43 ESP (Electronic stability program), Brake switch, NC contact 15
44 VGS control module (fully integrated transmission control) or automatic clutch 10
45 Interior blower or air conditioning interior blower 30
46 Central protection by fuses 80
47 Power steering pump 60
48 Preglow control module (diesel) 60
Secondary air injection (AIR) (gasoline) 30
* The fuse f14 has been increased from 10 to 15 ampere as Fuse 14 for wipe/wash pump relay of chassis end number 033 655.
Only a 10 ampere fuse should be used up to chassis end number 033 654.

Light module fuse box

Mercedes-Benz A-Class w168 - fuse box diagram- light nodule fuse box

No. Fused function A
1 Left low beam 7.5
2 Right low beam 7.5
3 Left main beam
Right main beam
Main beam indicator lamp (instrument cluster)
4 Left side lamp
Left tail lamp
5 Right side lamp
Right tail lamp
58K instrument cluster
License plate lamps
6 Left/right fog lamp
Left rear fog lamp

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

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