Mercedes M-Class w163 (1997 - 2005) Fuse Box Diagram

Jonathan Yarden
Jonathan Yarden
Expert Verified: The content on this page has been reviewed and verified by our team of experts.
Year of production: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005

Fuse and relay box left rear of engine compartment (Up-To-08/31/01)

Mercedes-Benz M-Class w163 - fuse box diagram - engine compartment


Fused function A
1 Interior socket (X58/1) 15
2 Instrument 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
3 Right front lamp unit(E2):
• Right high beam (E2e1)
15
4 Supply of sliding/tilting roof (SHD) circuit 30:
• Sliding/tilting roof motor (SHD) (M12)
30
5 Left front lamp unit (E1):
• Left high beam (E1e1)
Instrument duster (A1):
• High beam indicator lamp (A1e3)
7,5
6 Rear-end door wiper motor (M6/4) 7,5
7 Combination 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
8 Transfer case control unit (N78) 25
9 Instrument 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
10 Radio (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
11 Hot-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
12 Interior 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
13 Roof 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
14 With diesel:
Injection timing device
Exhaust gas recirculation valve
10
15 Interior 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
16 Diagnostic 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
17 Cargo area connector box (X58/4) 15
18 Trailer hitch connector (X52) 25
19 M111:
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
20 Left electrically adjustable and heated outside mirror (M21/1), right electrically adjustable and heated outside mirror (M21/2) Mirror heater 15
21 With Sound system:
Sound amplifier (A2/13)
Radio (A2)
25
22 Interior 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)
23 Spare
24 Interior 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
25 Right 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
26 Connector sleeve, circuit 15 fused (Z3/29):
• Ignition coils M111 (T1)
• Ignition coils M112 (T1)
• Ignition coils M113 (T1)
15
27 Traction systems control unit (N47) 40
28 Heated 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
29 Center 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
30 Center 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
31 Center 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
32 Right 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
33 Left front seat adjustment switch (S22)
Seat adjustment motor group:
left front (M25)
30
34 Left 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
35 Right front lamp unit (E2):
Right low beam (E2e2)
7,5
36 Rear window heater 25
37 Fanfare horns:
• Two-tone signaling system (H1)
• Two-tone signaling system, hom 2 (H1/1)
20
38 Fuel pump with fuel gauge sensor (M3/3) 20
39 Spare
40 Vacuum pump (M 612.963) 25
41 Circulating 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
42 Central 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
43 Heater blower relay (F1 k21)
Blower motor (М2)
30
44 Engine 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
45 Electrical air pump (M33) 40
46 Cockpit 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
47 Left 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
K1 Heated rear window relay
K2 FAN relay module (K39)
K3 Electric fuel pump relay (except engine 612.963)
K4 Left turn signal relay
K5 Circuit 58 relay, license plate illumination/ instrument cluster
K6 Electronic Stability Program (ESP) / stop lamp suppression relay
K7 Right turn signal relay
K8 Starter relay (solenoid switch, terminal 50)
K9 Circuit 58R relay (right standing lamp)
K10 Spare
K11 Circuit 15 relay delayed (engine 612.963 only)
K12 Circuit 15 relay
K13 Circuit 58L relay (left standing lamp)
K14 Convenience relay
K15 Central locking relay, unlocking tailgate
K16 Right front power window relay
K17 Front wiper relay, intermittent
K18 Left front power window relay
K19 Heater circulation pump relay and box fan fuse and relay box
K20 Central locking relay: Locking all doors
K21 Heater blower relay
K22 Low beam and contact piece relay
K23 Central locking relay: Unlocking front passenger’s door, rear doors and fuel tank flap
K24 Central locking relay: Unlocking driver’s door
K25 ETS / ESP hydraulic unit relay
K26 Engine fan relay, stage 1, with air conditionin
K27 Spare
K28 Secondary air injection pump relay
K29 Rear fog lamp relay

Fuse and relay box left rear of engine compartment (As-Of-09/01/01)

Mercedes-Benz M-Class w163 - fuse box diagram - engine compartment


Fused function A
1 Not assigned
2 Instrument 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
3 Not assigned
4 Supply of sliding/tilting roof (SHD) circuit 30:
• Sliding/tilting roof motor (SHD) (M12)
20
5 Not assigned
6 Seat heater 20
7 Combination 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
8 Transfer case control unit (N78)/ E-Call control unit (A35/8) 25
9 Instrument 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
10 Radio (A2)
Roof connector sleeve, circuit 15R (Z54/1)
• Lett sun visor with illuminated mirror (Е14/ 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
11 Hot-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
12 Interior 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
13 Roof 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
14 Engine control unit (diesel)
Injection timing device
Exhaust gas redrculation valve
25
15 Interior 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
16 Diagnostic 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
17 Cargo area connector box (X58/4) 20
18 Trailer hitch connector (X52) 25
19 M111:
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
20 Not assigned
21 Radio (A2)
Cellular telephone
Voice control system (VCS)
15
22 Interior 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
23 Headlamp range adjustment control module (N71) 15
24 Interior 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
25 Right 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
26 Terminal 15 connector sleeve, fused (Z3/29)
• Ignition colls M111 (T1)
• Ignition colls M112 (T1)
• Ignition coils M113(T1)
15
27 Traction systems control unit (N47) 40
28 Not assigned
29 Not assigned
30 Not assigned
31 Center 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
32 Not assigned
33 Not assigned
34 Not assigned
35 Not assigned
36 Mirror heater 10
37 Two-tone signaling system (H1) 20
38 Fuel pump with fuel level sensor (M3/3) only on model 163.128 15
39 Not assigned
40 Sound system 25
41 Not assigned
42 Central 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
43 Blower motor (М2), rear 20
44 Rear-end door washer fluid pump (M5/3) 15
44 Type 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
45 Electric air pump (M33) 40
46 Cockpit connector sleeve, rear fog lamp (Z50/10)
• Left rear fog lamp (E3e5), right rear fog lamp (E4e5)
Trailer hitch connector (X52)
7,5
47 Additional 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
48 Alarm horn (H3) 20
Relays
K1 Relay for heated mirrors
K2 FAN relay module (K39)
K3 Electric fuel pump relay (except engine 612.963)
K4 Left turn signal relay
K5 Circuit 58 relay, license plate illumination/ instrument cluster
K6 Stop lamp relay
K7 Right turn signal relay
K8 Starter relay (solenoid switch, terminal 50)
K9 Circuit 58R relay (right standing lamp)
K10 Spare
K11 Relay circuit 15 delayed (engines 612.963 and 628.963 only)
K12 Circuit 15 relay
K13 Circuit 58L relay (left standing lamp)
K14 Convenience relay (windows/roof/mirrors)
K15 Central locking relay, unlocking tailgate
K16 Spare
K17 Front wiper relay, intermittent
K18 Spare
K19 Spare
K20 Central locking relay: Locking all doors
K21 Spare
K22 Spare
K23 Central locking relay: unlock front passenger door, rear doors
K24 Central locking relay: Unlock driver door and fuel filler flap
K25 Spare
K26 Engine fan relay, stage 1, with air conditionin
K27 Rear-end door washer pump relay
K28 Secondary air injection pump relay
K29 Rear fog lamp relay

Fuse and module box right front footwell

Mercedes-Benz M-Class w163 - fuse box diagram - right -front footwell


Fused function
A
1 AIRBAG OFF indicator lamp 7.5
2 Front cigar lighter (with ashtray illumination) Up to VIN A289564, X754619:

20

As of VIN A289565, X754620:

15
3 Tailgate wiper motor 15
4 Up to VIN A289564, X754619: E-Call control unit ((USA) only)
As of VIN A289565, X754620: front blower motor
7.5
40
5 Instrument duster/air conditioning Up to VIN A289564, X754619:

7.5

As of VIN A289565, X754620:

15
6 Interior socket 20
7 Not assigned
8 Left front seat heated cushion and right front seat heated cushion
Not assigned
Up to VIN A289564, X754619:

20

As of VIN A289565, X754620
9 Not assigned
10 Left front seat adjustment switch Up to VIN A289564, X754619:

30

As of VIN A289565, X754620:

35
11 Right front seat adjustment switch Up to VIN A289564, X754619:

30

As of VIN A289565, X754620:

35
13 Remove existing fuel pump with fuel level sensor (gasoline) 20
17 Heated rear window 25
19 HCS [SRA] pump 30
20 Right high beam As of VIN A289565, X754620:

7,5
21 Left high beam/ high beam indicator As of VIN A289565, X754620:

7,5
24 Rear power window motors and voltage supply for lower control panel control unit As Of VIN A289565, X754620:

25
25 Front power window motors and voltage supply for lower control panel control unit As Of VIN A289565, X754620:

25
Relays
K1 Seats convenience control relay
K2 Fuel pump relay (gasoline)
K4 Rear window defroster relay
K5 HCS [SRA] pump relay
K6 Auxiliary high beam relay (as of VIN A289565, X754620)
K8 Lower control panel/contact bridge switch (as of VIN A289565, X754620)
K9 Relay for voltage supply of term. 15

 

 

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

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