1996-2003 Mercedes-Benz Vito (W638) fuse box diagram

This article covers the first-generation Mercedes-Benz Vito/V-Class (W638), manufactured from 1996 to 2003. It includes fuse box diagrams for each year from 1996 to 2003, details the locations of the fuse panels inside the vehicle, and explains the function of each fuse (fuse layout) and relay.

Cigar lighter (power outlet) fuse in the Mercedes-Benz Vito is the fuse #8 in the Fuse box under steering column.

Fuse box under steering column

№	Fused function	A
1	Right side light and taillamp, trailer socket (term. 58R) M111 and OM601 (relay K71)	10 15
2	Right main beam M111 and OM601 (connector between main wiring harness and taxi console II for right main beam)	10 15
3	Left main beam, main beam indicator lamp M111 and OM601 (connector between main wiring harness and taxi console II for left main beam)	10 15
4	Signal horn, reverse lamp, convenience locking system, central locking system combination relay (term. 15)	15
5	Cruise control switch and control module, stop lamp, M104.900 (transmission fault indicator lamp)	15
6	Front and rear windshield washers	20
7	ABS/ABD and ABS/ETS safety lamp and information display, indicator lamps, windshield washer water level, recirculated air switch, tachograph (term. 15), diagnosis socket, filament bulb monitoring control module (term. 15), instrument cluster (term. 15), glove compartment illumination, M 104.900 (speedometer sensor)	10 15
8	Cigarette lighter, radio (term. 30), automatic antenna, trunk socket, sliding door and driver’s cabin interior lights	20
9	Clock, warning flashers, tachograph (hire cars only)	10 15
10	Registration plate illumination, day-driving light relay, headlamp cleaning system relay, passenger compartment illumination, radio (term. 58), all control switch illumination, tachograph (term. 58) M111 and OM601 (main wiring harness/taxi console II connector for term. 58)	7,5 15
11	Registration plate illumination, relay K71 (term. 58), trailer socket (term. 58L), left taillamp and side light	10 15
12	Right low beam, fog taillamp, day-driving light relay K69	15
13	Left low beam, day-driving light relay K68	15
14	Fog lamp	15
15	Radio (term. 15R)	15
16	Not used	–
17	Not used	–
18	Not used	–
	Relay (underside of the fuse box)
L	Relay turn signals
R	Wiper relay

Fuse box under the instrument panel

№	Fused function	A
1	Right and left vent windows	7,5
2	Right front power window, front sliding roof	30
3	Left front power window, rear sliding roof	30
4	Central locking system actuators	25
5	Interior lighting, make-up mirror	10
6	Left and right interior sockets	20
7	D-network telephone, cellular phone	7,5
8	Anti-theft alarm system (ATA), ATA control module (term. 30)	20
9	Residual engine heat storage system (MRA), auxiliary heater relay	10
10	Anti-theft alarm system signal horn	7,5 10
11	Left flasher lamp (from ATA)	7,5
12	Right flasher lamp (from ATA)	7,5
13	ATA	7,5 15 20
14	ATA	7,5
15	ATA	7,5
16	Not used	–
17	Not used	–
18	Not used	–

Fuse Box under driver’s seat

№	Fused function	A
1	Control module (term. 15) for ABS and pneumatic shock absorption, ASR, EBV	7,5 10
2	Immobilizer, engine control module (term. 15) M104.900 (ignition coil, fuel pump relay) M111 and OM601 (idle speed control, diesel control module)	15
2	Wiper Multiple Relay – rear	25
3	Engine fan, immobiliser control	7,5
4	M104.900 (Oxygen sensor, secondary air pump relay, heater crank case illumination, multiport fuel injection/ignition system control module, tank venting, secondary intake manifold changeover and tank valve M111 and OM601 (seat belt warning relay only for Japan)	15
4	Charge Air Cooler – diesel Radiator Fan – Petrol	25
5	M 104.900 (6 injection valves, fuel pump) M111 and OM601 (ignition coils, tank sensor module, 4 injection valves)	20
5	ABS Valve Control	25
6	Automatic transmission, immobilizer and engine control module (term. 30)	10
7	Electronic level control warning lamps, relay K26 (D+)	15
7	Heating Operating Device	30
8	Airbag control module	10
8	Headlamp Cleaning Relay	20
9	Airbag indicator lamp Auxiliary Heating Control	7,5
10	Trailer socket (term. 30), refrigerator box	25
11	Rear windshield heater control module (term. 30), Anti Theft Alarm/Central locking check-back signal	30
12	ABS control module (term. 30)	25
12	Heater Control Unit	10
13	Pneumatic shock absorber compressor	30
14	Auxiliary heater operating equipment, auxiliary flasher module for trailer, pneumatic shock absorber control module, tachograph (term. 30)	7,5
15	Two-way radio unit	7,5
16	Air conditioning compressor relay, air conditioning system illumination switch and control module, residual engine heat storage system control module (term. 15), Taxi Meter	15
17	Automatic transmission control module (term. 15), position switch and illumination switch, kick-down air conditioning shut-off, M111 and OM601 (transmission fault indicator lamp)	15
18	Car telephone, cellular phone, anti-theft alarm system control module, mirror adjustment (left, right, tilt inwards)	10
19	Day-driving light relay K69	10
19	Crankcase Ventilation (diesel) Terminal 15 (petrol engine)	15
20	Day-driving light relay K68	10
20	Terminal 15 (petrol engine)	15
21	Relay K71 (term. 58)	10
21	Ignition Coil (petrol engine)	15
22	Front heater	40
22	Fuel Pump (petrol engine)	20
23	Right seat heater/position adjustment, rear windshield wiper relay (term. 15)	25
23	ECU – Engine Control Unit (diesel)	7,5
24	Left seat heater/position adjustment	30
24	ECU – Engine Control Unit (diesel)	25
25	Auxiliary heater and water pump relay, residual engine heat storage control module (term. 30)	10
26	Main beam washing system relay	20
26	Heater Booster Control Unit (diesel), Auxiliary Heating with Heater Booster	25
27	Auxiliary water heater control module (term. 30), engine radiator (turbo diesel)	25
28	D+ terminal Relay, Daytime driving lights K89 Relay	15
29	Daytime driving lights K69 Relay	10
30	Daytime driving lights K68 Relay	10
31	Terminal 58 Relay	10
32	Seat Heater – left seat, Seat Adjuster – left seat	30
33	Seat Heater – right seat Seat Adjuster – right seat	25
34	Water separator	7,5
35	Rear heater / A/C	7,5
36	Rear heater / A/C	15
M1	Engine fan (without air conditioning system)	40
M1	Engine fan (with air conditioning system)	60
M2	ABS control module	50 60
M3	M104.900 (secondary air pump) M111 and OM601 (not used)	40

Relay Box under driver’s seat

№	Function
K91	Right turn signals relay
K90	Left turn signals relay
K4	Circuit 15 relay
K10	Pneumatic shock absorber compressor
K19	Headlamp Cleaning Relay
K39	Fuel pump relay
K27	Seat unloaded relay
K6	ECU relay
K103	Cooling system booster pump relay
K37	Horn relay
K26	Electronic level control warning lamps
K83	Fog lamps relay
K29	Heater relay (ZHE)
K70	Circuit 15 relay
K1	Starter relay
V9	ATA 1
V10	ATA 2
V8	Heater diode (ZHE)
K71	Terminal 58 Relay
K68	Daytime driving lights K68 Relay
K69	Daytime driving lights K69 Relay
K88	Fog lamps relay 1 (DRL)
K89	Fog lamps relay 2 (DRL)

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