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Mercedes-Benz M-Class / ML-Class (W163; 1998-2005) fuses and relays

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In this article, we consider the first-generation Mercedes-Benz M-Class / ML-Class (W163), produced from 1997 to 2005. Here you will find fuse box diagrams of Mercedes-Benz ML230, ML270, ML320, ML350, ML400, ML430, ML500, ML55 1998, 1999, 2000, 2001, 2002, 2003, 2004 and 2005, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

See other Mercedes-Benz M-Class:

Fuse Layout Mercedes-Benz M-Class / ML-Class 1998-2005


Cigar lighter (power outlet) fuses in the Mercedes-Benz M-Class are the fuses #2 (Front cigar lighter), #6 (Interior socket) in the Passenger Compartment fuse box, and fuse #1 (Up to 08.31.01: Interior socket) in the Engine Compartment Fuse Box.


Passenger Compartment Fuse Box

Fuse box location

The fuse box is located in the front-right footwell, behind the cover.

Fuse box diagram

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Assignment of the fuses and relay in the passenger compartment
Fused functionAmp
1AIRBAG OFF indicator lamp7.5
2Front cigar lighter  (with ashtray illumination)20 (Up to VIN A289564, X754619)

15 (As of VIN A289565, X754620)
3Tailgate wiper motor15
4Up to VIN A289564, X754619: E-Call control unit ((USA) only)
As of VIN A289565, X754620: front blower motor
7.5 (Up to VIN A289564, X754619)

40 (As of VIN A289565, X754620)
5Instrument duster/air conditioning7.5 (Up to VIN A289564, X754619)

15 (As of VIN A289565, X754620)
6Interior socket20
7Not assigned-
8Up to VIN A289564, X754619: Left front seat heated cushion and right front seat heated cushion
As of VIN A289565, X754620: Not assigned
20 (Up to VIN A289564, X754619)
9Not assigned-
10Left front seat adjustment switch30 (Up to VIN A289564, X754619)

35 (As of VIN A289565, X754620)
11Right front seat adjustment switch30 (Up to VIN A289564, X754619)

35 (As of VIN A289565, X754620)
13Remove existing fuel pump with fuel level sensor (gasoline)20
17Heated rear window25
19HCS [SRA] pump30
20As of VIN A289565, X754620: Right high beam7.5
21As of VIN A289565, X754620: Left high beam/ high beam indicator7.5
24As of VIN A289565, X754620: Rear power window motors and voltage supply for lower control panel control unit25
25As of VIN A289565, X754620: Front power window motors and voltage supply for lower control panel control unit25
Relays
K1Seats convenience control relay
K2Fuel pump relay (gasoline)
K4Rear window defroster relay
K5HCS [SRA] pump relay
K6Auxiliary high beam relay (as of VIN A289565, X754620)
K8Lower control panel/contact bridge switch (as of VIN A289565, X754620)
K9Relay for voltage supply of term. 15

Engine Compartment Fuse Box

Fuse box location

The fuse box is located in the engine compartment (left-side), under the cover.

Fuse box diagram (Up to 08/31/01)

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Assignment of the fuses and relay in the engine compartment (Up to 08.31.01)
Fused functionAmp
1Interior socket (X58/1)15
2Instrument cluster (A1):
• Left front indicator lamp (A1e1)
Left front lamp unit (E1):
• Left turn signal lamp (E1e5)
Left left taillamp (E3):
• Left turn signal lamp (E3e1)
Left auxiliary turn signal lamp (E22/1)
Interior connector sleeve, circuit L (Z53/4)
• Trailer hitch connector (X52)
7,5
3Right front lamp unit(E2):
• Right high beam (E2e1)
15
4Supply of sliding/tilting roof (SHD) circuit 30:
• Sliding/tilting roof motor (SHD) (M12)
30
5Left front lamp unit (E1):
• Left high beam (E1e1)
Instrument duster (A1):
• High beam indicator lamp (A1e3)
7,5
6Rear-end door wiper motor (M6/4)7,5
7Combination switch (S4):
• Hazard flasher switch (S6/1s1)
• Windshield washer system switch (S4s4)
• Wipe switch (S4s5)
Wiper motor (M6/1)
Relay k17: Front wiper interval relay
15
8Transfer case control unit (N78)25
9Instrument duster (A1)
License plate illumination:
• Left rear-end door license plate lamp (Е19/ 3V right rear-end door license plate lamp (E19/4)
• License plate lamp, left spare wheel carrier (E19/5)/ license plate lamp, right spare wheel carrier (E19/6)
Cockpit connector sleeve, drcuit 58d (Z50/ 1):
• Left vent window switch (S21/13y right vent window switch (S21/14) (light emitting diodes)
• Left front SIH switch (S51/1У right front SIH switch (S51/2) (light emitting diodes)
• Heater/AC switch (S98) (light emitting diodes)
• 2-way switch combination (S97/6) (light emitting diodes)
• ESP OFF switch (S76/6) (light emitting diodes)
• Outside mirror switch, folding in and out (S50/1) (light emitting diode)
• Electric headlamp range adjustment selector (SI/1) (light emitting diode)
• Rear window wipe/wash switch (S78) (light emitting diode)
• Tlltlng/slidlng roof switch (S13/2) (light emitting diode)
• Backup lamp switch (S16/2)
• Illumination (R3e1)
• Center console switch group (S21)
7,5
10Radio (A2) Roof connector sleeve, arcuit 15R (Z54/1):
• Left sun visor with Illuminated mirror (Е14/1)
• Right sun visor with illuminated mirror (E14/2)
• Trip computer control unit (N41)
• Automatic dimming Inside rearview mirror (H7)
Front cigar lighter (with ashtray illumination) R3
• Heating element (R3r1)
Glove compartment lamp (E13/1)
Instrument cluster (A1):
• Airbag Indicator and warning light (A1e15)
10
11Hot-film mass air flow sensor (B2/5)
Camshaft position sensor (L5/1)
Fuel injection valves (Y62)
In the case of M111:
• HFM control module (N3/4)
10
12Interior connector sleeve, circuit 58L (Z53/6):
• Trailer hitch connector (X52)
• Left taillamp (E3):
• Left taillamp and parking lamp (E3e2)
Left front lamp unit (E1):
• Left standing and parking lamp (E1e3)
• Left slde-marker lamp (E1e6)
7,5
13Roof connector sleeve, circuit 30 (Z54/2):
• Front dome lamp (with shut-off delay and front reading lamp) (E15/2)
• Rear interior lamp (E15/3)
• Dome lamp in left rear (E15/8)
• Dome lamp In right rear (E15/9)
• Trip computer control unit (N41)
Instrument cluster (A1):
• Seat belt warning lamp (A1E9)
Steering angle sensor (N49)
Datallnk connector (X11/4)
10
14With diesel: Injection timing device, Exhaust gas recirculation valve10
15Interior connector sleeve, circuit 54 (Z52/6):
Left left taillamp (E3):
• Left stop lamp (E3e4) Right taillamp (E4):
• Right stop lamp (E4e4)
• Center-high mounted stop lamp (E21)
• Center high-mounted stop lamp, spare wheel carrier (E35)
• Trailer hitch connector (X52)
10
16Diagnostic connector (X11/4)
Reversing lamp switch (S16/2)
Cockpit connector sleeve, circuit 15 (Z50/2):
• Air conditioning control unit (N19)
• Heater/AC switch (S98):
• Blower switch (S98s1)
• Thermostat (S98p1)
• Recirculated air switch Indicator lamp (S98h1)
• llumination (S98e1)
• Switch illumination (S98e2)
• Recirculated air switch (S98s2)
• Air conditioning On indicator lamp (S98h2)
• Switch Illumination (S98e2)
• Air conditioning On switch (S98s3)
• Recirculated air flap actuator motor (M39)
• Air conditioning control unit (N19)
15
17Cargo area connector box (X58/4)15
18Trailer hitch connector (X52)25
19M111:
HFM control module (N3/4)
Adjustable camshaft timing solenoid (Y49)
Activated charcoal filter shutoff valve (Y58)
M112/113:
Terminal 87 M2e connector sleeve (Z7/36)
• Intake manifold switchover valve (Y22/5)
• EGR switchover valve (Y27)
• Air pump vacuum valve (Y32)
• O2-Left oxygen sensor, upstream of catalytic converter. (G3/3)
• O2-Right oxygen sensor, upstream of catalytic converter. (G3/4)
Purge control valve (AKF) (Y58/1)
O2-Left oxygen sensor, downstream of catalytic converter. (G3/5)
O2-Right oxygen sensor, downstream of catalytic converter. (G3/6)
M113:
Cylinder switch-off valve 1Y80
Cylinder switch-off valve 1Y80
15
20Left electrically adjustable and heated outside mirror (M21/1), right electrically adjustable and heated outside mirror (M21/2) Mirror heater15
21With Sound system:
Sound amplifier (A2/13)
Radio (A2)
25
22Interior connector sleeve, circuit 15 (Z51/5)
• ETC [EGS] control module (N15/3)
• Transmission range recognition switch (S16/10)
• Blocking solenoid, backup/park pawl (Y66/1)
• Transfer case control unit (N78)
• Traction systems control unit (N47)
With ESP:
• Steering angle sensor (N49)
Instrument cluster (A1)
(F1k3) Fuel pump relay
Cruise control pushbutton switch (S40)
With M111:
HFM-SFI control unit (N3/4)
With M112/113:
Motor electronics control unit (N3/10)
23Spare
24Interior connector sleeve, circuit 58R (Z52/ 4):
• Trailer hitch connector (X52)
Right front lamp unit (E2):
• Right standing and parking lamp (E2e3)
Right taillamp (E4):
• Right taillamp and parking lamp (E4e2)
Right side-marker lamp (E2e6)
7,5
25Right front lamp unit (E2):
• Right turn signal lamp (E2e5)
Right taillamp (E4)
• Right turn signal lamp (E4e1)
Right auxiliary turn signal lamp (E22/2)
Traction system control unit (N47)
Interior connector sleeve, circuit R (Z53/5):
• Trailer hitch connector (X52)
Instrument cluster (A1):
• Right turn signal indicator lamp (A1e2)
7,5
26Connector sleeve, circuit 15 fused (Z3/29):
• Ignition coils M111 (T1)
• Ignition coils M112 (T1)
• Ignition coils M113 (T1)
15
27Traction systems control unit (N47)40
28Heated seats interior connector sleeve (Z53/8):
Supply of left/right heated seats:
• Heated seats relay, stage 1 (K59)
• Heated seats relay, stage 2 (K59/1)
• Left front seat heated cushion (R13/1)/ right front seat heated cushion (R13/3)
• Left front backrest heated cushion (R13/ 2) right front backrest heated cushion (R13/4)
20
29Center console switch group (S21):
• Right front window switch (S21s2)
• Right front power window motor (M10/4)
• Left rear window switch (S21s3)
Switch combination, power windows, rear center console (S21/15):
• Left rear window switch (S21/15s1)
• Power window motor: rear left (M10/5)
Relay 16:
Right front power window (F1k16)
30
30Center console switch group (S21):
• Left front window switch (S21s1)
• Right rear window switch (S21s4)
Switch combination, power windows, rear center console (S21/15):
• Right front window switch (S21/15s2)
Relay 18:
Left front power window (F1k18)
30
31Center console switch group (S21):
• Switch, electrical outside mirror adjustment (S50)
Cockpit connector sleeve, vent window (Z50/ 13):
Rear vent window:
• Left vent window switch (S21/13)
• Right vent window switch (S21/14)
Sliding/tilting roof switch (S13/2)
15
32Right front seat adjustment switch (S23)
Right front seat adjustment motor group (M26)
• Fore/aft motor (M26/m1)
• Rear up/down motor (M26/m2)
• Front up/down motor (M26/m3)
• Backrest fore/aft motor (M26/m5)
30
33Left front seat adjustment switch (S22)
Seat adjustment motor group:
left front (M25)
30
34Left front lamp unit (E1):
Left low beam (E1e2) (S1/1 Electric headlamp range adjustment selector)
Left headlamp range adjustment motors (E1m1), right headlamp range adjustment motors (E1m2)
7,5
35Right front lamp unit (E2):
Right low beam (E2e2)
7,5
36Rear window heater25
37Fanfare horns:
• Two-tone signaling system (H1)
• Two-tone signaling system, horn 2 (H1/1)
20
38Fuel pump with fuel gauge sensor (M3/3)20
39Spare
40Vacuum pump (M 612.963)25
41Circulating pump relay (F1k19)
Right engine compartment connector sleeve, pump (Z57/2):
• Coolant circulation pump (M13)
• Module box blower motor (M2/2)
With diesel:
Healer booster Stationary heater
25
42Central locking:
• Left front door central locking motor (M14/6)
• Right front door central locking motor (M14/5)
Connector sleeve, interior central locking (Z53/1):
• Rear-end door central locking motor (M14/7)
• Left rear door CL [ZV] motor (M14/8)
• Right rear door CL [ZV] motor (M14/9)
• Fuel filler flap CL [ZV] motor (M14/10)
20
43Heater blower relay (F1 k21)
Blower motor (M2)
30
44Engine fan relay, stage 1 (Flk26)
Engine fan relay, stage 1 (F1k26)
Left engine compartment connector sleeve, fan (Z56/2)
• Left additional fan (M4m1)
• Right additional fan (M4m2)
30
45Electrical air pump (M33)40
46Cockpit connector sleeve, rear fog lamp (Z50/10):
• 2-way switch combination (S96/7) (rear fog lamp diode)
Left taillamp (E3), right taillamp (E4)
• Left rear fog lamp (E3e5), right rear fog lamp (E4e5)
Trailer hitch connector (X52)
7.5
47Left engine compartment connector sleeve, additional headlamp (Z56/4)
Left front lamp unit (E1):
• Left fog lamp (E1e4)
• Left additional headlamp high beam (E1e7), right additional headlamp high beam (E2e7)
Right front headlamp unit (E2)
15
Relays
K1Heated rear window relay
K2FAN relay module (K39)
K3Electric fuel pump relay (except engine 612.963)
K4Left turn signal relay
K5Circuit 58 relay, license plate illumination/ instrument cluster
K6Electronic Stability Program (ESP) / stop lamp suppression relay
K7Right turn signal relay
K8Starter relay (solenoid switch, terminal 50)
K9Circuit 58R relay (right standing lamp)
K10Spare
K11Circuit 15 relay delayed (engine 612.963 only)
K12Circuit 15 relay
K13Circuit 58L relay (left standing lamp)
K14Convenience relay
K15Central locking relay, unlocking tailgate
K16Right front power window relay
K17Front wiper relay, intermittent
K18Left front power window relay
K19Heater circulation pump relay and box fan fuse and relay box
K20Central locking relay: Locking all doors
K21Heater blower relay
K22Low beam and contact piece relay
K23Central locking relay: Unlocking front passenger's door, rear doors and fuel tank flap
K24Central locking relay: Unlocking driver's door
K25ETS / ESP hydraulic unit relay
K26Engine fan relay, stage 1, with air conditionin
K27Spare
K28Secondary air injection pump relay
K29Rear fog lamp relay

Fuse box diagram (As of 09/01/01)

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Assignment of the fuses and relay in the engine compartment (As of 09.01.01)
Fused functionAmp
1Not assigned-
2Instrument cluster (A1):
• Left turn signal indicator lamp (A1e1)
Left front lamp unit (E1):
• Left turn signal lamp (E1e5)
Left taillamp (E3):
• Left turn signal lamp (E3e1)
Left auxiliary turn signal lamp (E22/1)
Interior connector sleeve, circuit L (Z53/4)
• Trailer hitch connector (X52)
7,5
3Not assigned-
4Supply of sliding/tilting roof (SHD) circuit 30:
• Sliding/tilting roof motor (SHD) (M12)
20
5Not assigned
6Seat heater20
7Combination switch (S4):
• Hazard flasher switch (S6/1s1)
• Windshield washer system switch (S4s4)
• Wipe switch (S4s5) Wiper motor (M6/1)
Windshield washer fluid pump (M5/1)
Relay k17:
Front wiper interval relay
30
8Transfer case control unit (N78)/ E-Call control unit (A35/8)25
9Instrument cluster (A1)
License plate illumination:
• Left rear-end door license plate lamp (Е19/ 3), right rear-end door license plate lamp (E19/4),
• License plate lamp, left spare wheel carrier (E19/5), license plate lamp, right spare wheel carrier (E19/6)
Cockpit connector sleeve, circuit 58d (Z50/ 1):
• Left vent window switch (S21/13), right vent window switch (S21/14) (light emitting diodes)
• Left front SIH switch (S51/1), right front SIH switch (S51/2) (light emitting diodes)
• 2-way switch combination (S97/6) (light emitting diodes)
• ESP OFF switch (S76/6) (light emitting diodes)
• Outside mirror switch, folding in and out (S50/1) (light emitting diode)
• Electric headlamp range adjustment selector (S1/1) (light emitting diode)
• Rear window wipe/wash switch (S78) (light emitting diode)
• Tilting/sliding roof switch (S13/2) (light emitting diode)
• Backup lamp switch (S16/2)
• Illumination (R3e1)
• Center console switch aroup (S21)
7,5
10Radio (A2)
Roof connector sleeve, circuit 15R (Z54/1)
• Left sun visor with illuminated mirror (E14/ 1)
• Right sun visor with Illuminated mirror (E14/2)
• Automatic dimming inside rearview mirror (H7)
Front cigar lighter with ashtray illumination (R3)
• Heating element (R3r1)
Glove compartment lamp (E13/1)
Instrument cluster (A1):
• Airbag indicator and warning light (A1e15)
10
11Hot-film mass air flow sensor (B2/5)
Camshaft position sensor (L5)
Fuel injection valves (Y62)
In the case of M111:
• HFM control module (N3/4)
15
12Interior connector sleeve, circuit 58L (Z53/6)
• Trailer hitch connector (X52)
• Left taillamp (E3):
• Left taillamp and parking lamp (E3e2)
Left front lamp unit (E1):
• Left standing and parking lamp (E1e3)
• Left side-marker lamp (E1e6)
7,5
13Roof connector sleeve, circuit 30 (Z54/2)
• Front dome lamp (with shut-off delay and front reading lamp) (E15/2)
• Rear interior lamp (E15/3)
• Dome lamp in left rear (E15/8)
• Dome lamp in right rear (E15/9)
• Left front footwell lamps (E17/16)
• Right front footwell lamps (E17/15)
• Trip computer control unit (TRIP) (N41)
Instrument duster (A1):
Steering angle sensor (N49)
Datalink connector (X11/4)
10
14Engine control unit (diesel)
Injection timing device
Exhaust gas redrculation valve
25
15Interior connector sleeve, drcuit 54 (Z52/6)
Left left taillamp (E3)
• Left stop lamp (E3e4)
Right taillamp (E4):
• Right stop lamp (E4e4)
• Center high-mounted stop lamp (E21)
• Center high-mounted stop lamp, spare wheel carrier (E35)
• Stop lamp switch
10
16Diagnostic connector (X11/4)
Reversing lamp switch (S16/2)
Cockpit connector sleeve, circuit 15 (Z50/2)
• Air conditioning control unit (N19)
• Heater/AC switch (S98)
• Blower switch (S98s1)
• Thermostat (S98p1)
• Illumination (S98el)
• Illumination (S98e2)
• Recirculated air switch (S98s2)
• Air conditioning On switch (S98s3)
• Recirculated air flap actuator motor (M39)
Instrument cluster (A1)
15
17Cargo area connector box (X58/4)20
18Trailer hitch connector (X52)25
19M111:
HFM control module (N3/4)
Adjustable camshaft timing solenoid (Y49)
Activated charcoal filter shutoff valve (Y58)
M112/113:
Terminal 87 M2e connector sleeve (Z7/36)
• EGR switchover valve (Y27)
• Air pump vacuum valve (Y32)
• O2-Left oxygen sensor, upstream of catalytic converter. (G3/3)
• O2-Right oxygen sensor, upstream of catalytic converter. (G3/4)
Purge control valve (Y58/1)
O2-Left oxygen sensor, downstream of catalytic converter. (G3/5)
O2-Right oxygen sensor, downstream of catalytic converter. (G3/6)
15
20Not assigned-
21Radio (A2)
Cellular telephone
Voice control system (VCS)
15
22Interior connector sleeve, circuit 15 (Z51/5)
• ETC [EGS] control module (N15/3)
• Transmission range recognition switch (S16/10)
• Blocking solenoid, backup/park pawl (Y66/1)
• Transfer case control unit (N78)
• Traction systems control unit (N47) With ESP:
• Steering angle sensor (N49)
Instrument cluster (A1)
Cruise control pushbutton switch (S40)
With M111:
HFM-SFI control unit (N3/4)
With M112/113:
Motor electronics control unit (N3/10)
Suction fan control unit (N65/2) on models 163.174/175
Rain sensor (B38)
15
23Headlamp range adjustment control module (N71)15
24Interior connector sleeve, circuit 58R (Z52/4)
• Trailer hitch connector (X52)
Right front headlamp unit (E2)
• Right standing and parking lamp (E2e3)
Right taillamp (E4)
• Right taillamp and parking lamp (E4e2)
Right slde-marker lamp (E2e6)
7,5
25Right front headlamp unit (E2)
• Right turn signal lamp (E2e5)
Right taillamp (E4)
• Right turn signal lamp (E4e1)
Right auxiliary turn signal lamp (E22/2)
Traction system control unit (N47)
Interior connector sleeve, circuit R (Z53/5):
• Trailer hitch connector (X52)
Instrument duster (A1)
• Right turn signal Indicator lamp (A1e2)
7,5
26Terminal 15 connector sleeve, fused (Z3/29)
• Ignition colls M111 (T1)
• Ignition colls M112 (T1)
• Ignition coils M113(T1)
15
27Traction systems control unit (N47)40
28Not assigned-
29Not assigned
30Not assigned
31Center console switch group (S21)
Cockpit connector sleeve, vent window (Z50/ 13)
• Left vent window switch (S21/13)
• Right vent window switch (S21/14)
Tilting/sliding roof switch (S13/2)
Mirror lamps
15
32Not assigned-
33Not assigned-
34Not assigned-
35Not assigned-
36Mirror heater10
37Two-tone signaling system (HI)20
38Fuel pump with fuel level sensor (M3/3) only on model 163.12815
39Not assigned-
40Sound system25
41Not assigned-
42Central locking:
• Left front door central locking motor (M14/6)
• Right front door central locking motor (M14/5)
Interior central locking connector sleeve, motor 1 (Z53/1)
• Rear-end door central locking motor (M14/7)
• Left rear door CL [ZV] motor (M14/8)
• Right rear door CL [ZV] motor (M14/9)
• Fuel filler flap CL [ZV] motor (M14/10)
20
43Blower motor (M2), rear20
44Rear-end door washer fluid pump (M5/3)15
44Type 163.154/157
Engine fan relay, stage 1 (F1k26)
Engine fan relay, stage 1 (F1k26)
Left engine compartment connector sleeve, fan (Z56/2)
• Left additional fan (M4m1)
• Right additional fan (M4m2)
40
45Electric air pump (M33)40
46Cockpit connector sleeve, rear fog lamp (Z50/10)
• Left rear fog lamp (E3e5), right rear fog lamp (E4e5)
Trailer hitch connector (X52)
7,5
47Additional headlamp connector sleeve, right of engine compartment (Z56/4)
Left front headlamp unit (E1)
• Left fog lamp (E1e4)
• Left additional headlamp high beam (E1e7), right additional headlamp high beam (E2e7)
Right front headlamp unit (E2)
• Right fog lamp (E2e4)
15
48Alarm horn (H3)20
Relays
K1Relay for heated mirrors
K2FAN relay module (K39)
K3Electric fuel pump relay (except engine 612.963)
K4Left turn signal relay
K5Circuit 58 relay, license plate illumination/ instrument cluster
K6Stop lamp relay
K7Right turn signal relay
K8Starter relay (solenoid switch, terminal 50)
K9Circuit 58R relay (right standing lamp)
K10Spare
K11Relay circuit 15 delayed (engines 612.963 and 628.963 only)
K12Circuit 15 relay
K13Circuit 58L relay (left standing lamp)
K14Convenience relay (windows/roof/mirrors)
K15Central locking relay, unlocking tailgate
K16Spare
K17Front wiper relay, intermittent
K18Spare
K19Spare
K20Central locking relay: Locking all doors
K21Spare
K22Spare
K23Central locking relay: unlock front passenger door, rear doors
K24Central locking relay: Unlock driver door and fuel filler flap
K25Spare
K26Engine fan relay, stage 1, with air conditionin
K27Rear-end door washer pump relay
K28Secondary air injection pump relay
K29Rear fog lamp relay

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