Mercedes M-Class (W163) (1997-2005) – fuse diagram

Mercedes M-Class w163 (1997-2005) – fuse diagram

Year of production: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005

Fuse and relay box on the left side at the rear of the engine compartment (until 08/31/01)

Mercedes-Benz M-Class w163 – fuse box diagram – engine compartment
No. Function ZA
1 Internal socket (X58 / 1) 15
2 Instrument cluster (A1): – Left front turn signal (A1e1) Left front turn signal

(E1):
– Left turn signal (E1e5)

Left rear light (E3):

– Left turn signal (E3e1)

Left auxiliary turn signal (E22 / 1)

Internal connecting sleeve, L circuit (Z53 / 4)

– Trailer hitch connector (X52)
7,5
3 Right front light assembly (E2):

– Right high beam (E2e1)
15
4 Sliding-tilt roof (SHD) power supply, circuit 30:

– Sliding-tilt roof (SHD) motor (M12).
30
5 Left headlight assembly (E1):

– Left driving light (E1e1).

Powder instrument (A1):

– High beam indicator light (A1e3)
7,5
6 Rear door wiper motor (M6 / 4) 7,5
7 Combination switch (S4):

– Emergency light switch (S6 / 1s1)

– Windshield washer system switch (S4s4)

– Switch

Windshield wiper (S4s5) Wiper motor (M6 / 1)

Relay k17: windshield wiper intermittent relay
15
8 Transmission control unit (N78) 25
9 Instrument cleaning device (A1)

License plate lighting:

– License plate light left rear door (E19 / 3V right rear license plate light (E19 / 4))

– License plate light, left spare wheel holder (E19 / 5) / license plate light, right spare wheel holder (E19 / 6)

Cockpit connector bushing, drcuit 58d (Z50 / 1):
Left wind shield switch (S21 / 13y) right windshield 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-position switch combination (S97 / 6) (light-emitting diodes)

– ESP OFF switch (S76 / 6) (light emitting diodes)

– External mirror switch, folding and unfolding (S50 / 1) (light emitting diode)

– Electric light range control switch (SI / 1) (light-emitting diode)

– Rear window wiper / washer switch (S78) (light emitting diode)

– Roof switch (S13 / 2) (light emitting diode)

– Light switch

Reversing (S16 / 2) – Lighting (R3e1)
– Switch group in the center console (S21)
7,5
10 Radio (A2) Roof connector bushing, circuit 15R (Z54 / 1):

Left sun visor with illuminated mirror (Е14 / 1).
– Right sun visor with illuminated mirror (E14 / 2)

– On-board computer control unit (N41)

– Auto dimming interior rearview mirror (H7)

Front cigar lighter ( with ashtray illumination) R3
– Heating element (R3r1)

Glove box light (E13 / 1) Instrument cluster

Indicators (A1):

– Airbag indicator and warning light (A1e15)
10
11 Hot foil mass airflow sensor (B2 / 5)

Camshaft position sensor (L5 / 1)

Fuel injection valves (Y62)
For M111:

– HFM control module (N3 / 4).
10
12 Internal connecting sleeve, circuit 58L (Z53 / 6):

– Trailer hitch connector (X52)

– Left

taillight (E3): – Left tail light and parking light (E3e2) Assembly

Left front light (E1):

– Left position and parking light ( E1e3)

– Left position marker light (E1e6)
7,5
13 Roof connector bushing, circuit 30 (Z54 / 2):

– Front dome lamp (with switch-off delay and front reading lamp) (E15 / 2).

– Rear interior lamp (E15 / 3)

– Rear left dome lamp (E15 / 8)

– Dome lamp Rear right side (E15 / 9)

– On-board computer control unit (N41) Instrument cluster

Indicators (A1):

– Seat belt warning lamp (A1E9)

Steering wheel angle sensor (N49)

Datallnk connector (X11 / 4)
10
14 With diesel:

device

Injection control Exhaust gas recirculation valve
10
15 Internal connecting sleeve, circuit 54 (Z52 / 6):

Left

Stop light (E3): – Left stop light (E3e4) Right rear light (E4):

– Right stop light (E4e4)

– Center high-mounted stop light (E21)

– Center high mounted stop light, spare wheel holder (E35)

– Trailer hitch connector (X52)
10
16 Diagnostic connector (X11 / 4)

Reversing light switch (S16 / 2)

Cockpit connector bushing, circuit 15 (Z50 / 2):
– Air conditioning control unit (N19)

– Heating / AC switch (S98):

– Blower switch (S98s1).

– Thermostat (S98p1)

– Air recirculation switch Control lamp (S98h1).

– Backlight (S98e1)

– Lighting switch (S98e2)

– Air recirculation switch (S98s2)

– Air conditioning on indicator light (S98h2)

– Lighting switch (S98e2)

– Air conditioning On switch (S98s3)
– Air recirculation flap actuator motor (M39)

– Air conditioning control unit (N19)
15
17 Cargo compartment connection box (X58 / 4) 15
18 Trailer hitch connector (X52) 25
19 M111:
HFM control module (N3 / 4)

Adjustable camshaft timing solenoid (Y49)

Activated carbon filter shut-off valve (Y58)

M112 / 113: Connector
87 M2e compression fitting (Z7 / 36)
– Intake manifold switch valve (Y22 / 5)

– EGR switch valve (Y27)

– Air pump vacuum valve (Y32)

– O2 lambda probe – left, before the catalytic converter. (G3 / 3)
– O2-Right oxygen sensor, before the catalytic converter. (G3 / 4)
Air purge control valve (AKF) (Y58 / 1)

O2-Left oxygen sensor, after the catalytic converter. (G3 / 5)
O2-right oxygen sensor, after the catalytic converter. (G3 / 6)
M113:
Valve

Cylinder deactivation valve 1Y80 Cylinder deactivation 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 Internal connecting sleeve, circuit 15 (Z51 / 5)

– ETC [EGS] control module (N15 / 3)

– Transmission range recognition switch (S16 / 10)

– Locking solenoid valve, reserve / parking latch (Y66 / 1)

– Distribution box control unit (N78)

– Traction systems control unit (N47)

WITH ESP:
– Steering angle sensor (N49) Instrument cluster
Indicators (A1)

(F1k3) Fuel pump relay Push button

cruise control (S40)
Z M111:
HFM-SFI control unit (N3 / 4).

Z M112 / 113:
Engine electronics controller (N3 / 10)
23 Spare
24 Internal connector sleeve, circuit 58R (Z52 / 4):

– Trailer hitch connector (X52)

Right front light assembly (E2):

– Right position and parking light (E2e3).

Right rear light (E4):

– Right rear light and parking light (E4e2) )

Right side marker light (E2e6)
7,5
25 Right front light assembly (E2):

– Right turn signal light (E2e5)

Right rear light ( E4)

– Right turn signal light (E4e1)

Right auxiliary turn signal (E22 / 2)

Traction system controller (N47)
Internal connector sleeve, R circuit (Z53 / 5):

– Trailer hitch connector (X52) Instrument cluster
Indicators (A1):

– Right turn signal lamp (A1e2)
7,5
26 Connector, circuit 15 with fuse (Z3 / 29):

– M111 ignition coils (T1)

– M112 ignition coils (T1)

– M113 (T1) ignition coils
15
27 Traction systems control unit (N47) 40
28 Inner connecting sleeve of heated seats (Z53 / 8):

Supply of left / right heated seats:

– Heated seats relay, stage 1 (K59)

– Heated seats relay, stage 2 (K59 / 1)

– Heated left front seat cushion (R13 / 1) / Heated right front seat cushion (R13 / 3)

– Heated left front seat cushion (R13 / 2) Heated right front seat cushion (R13 / 4)
20
29 Switch group in the center console (S21):

– Right windshield switch (S21s2)

– Right windshield motor (M10 / 4)

– Left rear window switch (S21s3)

Switch combination, power windows, rear center console (S21 / 15):

– Left rear window switch (S21 / 15s1)

– Electric window lifter motor: rear left (M10 / 5)

Relay 16:

Right front power window (F1k16)
30
30 Center console switch group (S21):

– Left windshield switch (S21s1)

– Right rear window switch (S21s4)

Switch combination, power windows, rear center console (S21 / 15):

– Right windshield switch (S21 / 15s2)

Relay 18:

Left front power window (F1k18)
30
31 Center console switch group (S21):

– Toggle switch, electric exterior mirror adjustment (S50)

Cockpit connector sleeve, tilt window (Z50 / 13):
Rear window:
– Left tilt window switch (S21 / 13)

– Right tilt window switch ( S21 / 14)

Sliding-tilt roof switch (S13 / 2)
15
32 Right front seat adjustment switch (S23)

Right front seat adjustment motor group (M26)

– Forward / reverse motor (M26 / m1)

– Rear up / down motor (M26 / m2)

– Front up / down motor (M26 / m3)

– Backrest motor front / rear (M26 / m5)
30
33 Left front seat adjustment switch (S22)

Seat adjustment motor group:

Left front (M25)
30
34 Left front light assembly (E1):

Left dipped beam (E1e2) (S1 / 1 Electric headlight range adjustment switch).

Left headlight range adjustment motors (E1m1), right headlight range adjustment motors (E1m2)
7,5
35 Right headlight assembly (E2):

Right dipped 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 level sensor (M3 / 3) 20
39 Spare
40 Vacuum pump (M 612.963) 25
41 Circulation pump relay (F1k19)

Right engine compartment connector sleeve, pump (Z57 / 2):
– Coolant circulation pump (M13)

– Module box blower motor (M2 / 2).

With diesel:

Healing amplifier Stationary heater
25
42 Central locking:
– Left front door central locking motor (M14 / 6)

– Right front door central locking motor (M14 / 5)

Connecting sleeve, inner central lock (Z53 / 1):

– Rear door central locking motor (M14 / 7)

– CL [ZV] motor of the left rear door (M14 / 8)

– CL [ZV] right rear door motor (M14 / 9)

– CL [ZV] fuel filler flap motor (M14 / 10)
20
43 Heater blower relay (F1 k21)

Blower motor (М2)
30
44 Motor fan relay, stage 1 (Flk26)

Engine fan relay, stage 1 (F1k26)

Left engine compartment connector bushing, fan (Z56 / 2)

– Left auxiliary fan (M4m1)

– Right auxiliary fan (M4m2)
30
45 Electric air pump (M33) 40
46 Cockpit connector bushing, rear fog light (Z50 / 10):

– 2-position switch combination (S96 / 7) (rear fog light diode).

Left rear light (E3), right rear light
light ( E4) – Left rear fog light (E3e5), right rear fog light (E4e5)

Trailer hitch connector (X52)
7.5
47 Left connector in engine compartment, auxiliary headlight (Z56 / 4)
Left front headlight (E1):

– Left fog light (E1e4).

– Left auxiliary driving light (E1e7), right auxiliary driving light (E2e7)

Right front headlight (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 light / instrument cluster
K6 Electronic stability program (ESP) / stop light cut-off relay
K7 Right turn signal relay
K8 Starter relay (electromagnetic switch, terminal 50)
K9 58R relay circuit (right standing lamp)
K10 Spare
K11 Relay circuit 15 delayed (engine 612.963 only)
K12 Relay 15 circuit
K13 Relay circuit 58L (left standing lamp)
K14 Comfort relay
K15 Central locking relay, tailgate unlocking
K16 Right windshield relay
K17 Front windshield wiper relay, intermittent
K18 Left windshield 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 Dipped beam and contact light relay
K23 Central locking relay: unlock front passenger door, rear door and fuel tank flap
K24 Central locking relay: driver’s door unlocking
K25 ETS / ESP hydraulic unit relay
K26 Engine fan relay, stage 1, with air conditioning
K27 Spare
K28 Secondary air injection pump relay
K29 Rear fog light relay

Fuse and relay box left rear of engine compartment (Status 09/01/01)

Mercedes-Benz M-Class w163 – fuse box diagram – engine compartment
No. Function connected ZA
1 Not assigned
2 Instrument cluster (A1): – Left turn signal (A1e1)

Left front turn signal (E1):

– Left turn signal (E1e5)

Left rear turn signal (E3):

– Left turn signal (E3e1)

Left auxiliary turn signal (E22 / 1)

Internal connecting sleeve, L circuit (Z53 / 4)

– Trailer hitch connector (X52)
7,5
3 Not assigned
4 Supply of sliding-tilt roof (SHD) circuit 30:

– Sliding-tilt roof (SHD) motor (M12)
20
5 Not assigned
6 Seat heater 20
7 Switch

combination switch (S4): – Emergency light switch (S6 / 1s1)

– Windshield washer system switch (S4s4)

– Wiper switch (S4s5) Wiper motor (M6 / 1)

Windshield washer fluid pump (M5 / 1)

Relay k17:

Front windshield wiper interval relay
30
8 Control box control unit (N78) / E-Call control unit (A35 / 8) 25
9 Instrument cluster (A1)

License plate lighting:

– Left rear door license plate light (E19 / 3), right rear door license plate light (E19 / 4),

– License plate light, left spare wheel holder (E19 / 5), license plate light, right spare wheel holder (E19 / 6)

Cockpit connector bushing, circuit 58d (Z50 / 1):
– Left windshield switch (S21 / 13), right windshield switch (S21 / 14) (light emitting diode light).

– Left front SIH switch (S51 / 1), right front SIH switch (S51 / 2) (light emitting diodes)

– Combination of 2-position switches (S97 / 6) (light-emitting diodes)

– ESP OFF switch (S76 / 6) (light emitting diodes)

– External mirror switch, folding and unfolding (S50 / 1) (light-emitting diode)

– Electric light range control switch (S1 / 1) (light emitting diode)

– Rear window wiper / washer switch (S78) (light-emitting diode)

– Tilt-slide roof switch (S13 / 2) (light-emitting diode)

– Switch for the light

Reversing (S16 / 2) – Lighting (R3e1).

– Center console switch assembly (S21)
7,5
10 Radio (A2)
Roof connector bushing, circuit 15R (Z54 / 1)

– Lett sun visor with illuminated mirror (Е14 / 1)

– Right sun visor with illuminated mirror (E14 / 2)

– Auto dimming interior rearview mirror (H7)

Front cigar lighter with ashtray illumination (R3)
– Heating element (R3r1)

Glove box light (E13 / 1) Instrument cluster

Indicators (A1):

– Airbag indicator and warning light (A1e15)
10
11 Hot foil mass airflow sensor (B2 / 5)

Camshaft position sensor (L5)

Fuel injection valves (Y62)
For M111:

– HFM control module (N3 / 4).
15
12 Internal connecting sleeve, circuit 58L (Z53 / 6)

– Trailer hitch connector (X52)

– Left

taillight (E3): – Left tail light and parking light (E3e2) Assembly

Left front light (E1):

– Left tail light and parking light (E1e3) )

– Left side marker light (E1e6)
7,5
13 Roof connector bushing, circuit 30 (Z54 / 2)

– Front dome lamp (with switch-off delay and front reading lamp) (E15 / 2)

– Rear interior lamp (E15 / 3)

– Rear left dome lamp (E15 / 8 )

– Dome lamp in the right rear corner (E15 / 9)

– Left front leg bay lights (E17 / 16)

– Right front leg bay lights (E17 / 15)

– On-board computer (TRIP) control unit (N41) Sprayer

(A1):
Steering system angle sensor (N49)

Datalink connector (X11 / 4)
10
14 Engine controller (diesel)
Device

Injection control device Exhaust gas recirculation valve
25
15 Internal connecting sleeve, circuit 54 (Z52 / 6)

Left
Tail light (E3) – Left stop light (E3e4)

Right tail light (E4):

– Right stop light (E4e4)

– Center high-mounted stop lamp (E21)

– Center high-mounted stop lamp, spare wheel holder (E35)

– Stop light switch
10
16 Diagnostic connector (X11 / 4)

Reversing light switch (S16 / 2)

Cockpit connector bushing, circuit 15 (Z50 / 2)
– Air conditioning control unit (N19)

– Heating / AC switch (S98)

– Blower switch (S98s1)

– Thermostat (S98p1)

– Lighting (S98el)

– Lighting (S98e2)

– Air recirculation switch (S98s2)

– Air conditioning switch (S98s3)

– Air recirculation flap actuator motor (M39) Instrument cluster
indicators (A1)
15
17 Cargo compartment connection box (X58 / 4) 20
18 Trailer hitch connector (X52) 25
19 M111:
HFM control module (N3 / 4)

Adjustable camshaft timing solenoid (Y49)

Activated carbon filter shut-off valve (Y58)

M112 / 113:
87 M2e compression fitting (Z7 / 36)
– EGR switch valve (Y27)

– Air pump vacuum valve (Y32)

– O2-Left oxygen sensor, before catalytic converter. (G3 / 3)
– O2-Right oxygen sensor, before catalytic converter. (G3 / 4)
Blowdown control valve (Y58 / 1)

O2-Left oxygen sensor, after the catalytic converter. (G3 / 5)
O2-right oxygen sensor, after the catalytic converter. (G3 / 6)
15
20 Not assigned
21 Radio (A2)
Cell phone

Voice control system (VCS)
15
22 Internal connecting sleeve, circuit 15 (Z51 / 5)

– ETC control module [EGS] (N15 / 3)

– Transmission range recognition switch (S16 / 10)

– Locking solenoid valve, reserve / parking latch (Y66 / 1)

– Distribution box control unit (N78)

– Traction systems control unit (N47) With ESP:

– Steering angle sensor (N49) Instrument cluster
Indicators (A1) Button

cruise control (S40)
Z M111:
HFM-SFI control unit (N3 / 4).

Z M112 / 113:
Motor electronics control unit (N3 / 10)
Exhaust fan controller (N65 / 2) on 163.174 / 175 models

Rain sensor (B38)
15
23 Headlight range control module (N71) 15
24 Internal connector sleeve, circuit 58R (Z52 / 4)

– Trailer hitch connector (X52)

Right front headlight assembly (E2)

– Right parking and parking light (E2e3)

Right taillight (E4)

– Right taillight and parking light (E4e2)

Right side – marker light (E2e6)
7,5
25 Right front headlight (E2)

– Right turn signal light (E2e5)
Right rear headlight (E4)

– Right turn signal (E4e1)

Right auxiliary turn signal (E22 / 2)

Traction system controller (N47)
Internal connecting sleeve, R circuit (Z53 / 5):

– Trailer hitch connector (X52)

Instrument cluster
Instrument cleaning device (A1) – Right turn signal blinker Light (A1e2)
7,5
26 Connector end 15, fuse (Z3 / 29)

– M111 ignition columns (T1)

– M112 ignition manifolds (T1)

– M113 (T1) ignition coils
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 window switch (S21 / 13)

– Right window switch (S21 / 14)

Tilt and slide 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-color signaling system (H1) 20
38 Fuel pump with fuel level sensor (M3 / 3) on 163.128 model only 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)

Inner bushing of the central locking connector, motor 1 (Z53 / 1)
– Rear door central locking motor (M14 / 7)

– CL [ZV] left rear door motor (M14 / 8)

– CL [ZV] right rear door motor (M14 / 9)

– CL [ZV] fuel filler flap motor (M14 / 10)
20
43 Rear blower motor (М2) 20
44 Rear 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)

– Additional left fan (M4m1)

– Additional right fan (M4m2)
40
45 Electric air pump (M33) 40
46 Cockpit connector bushing, rear fog light (Z50 / 10)

– Left rear fog light (E3e5), right rear fog light (E4e5)

Trailer hitch connector (X52)
7,5
47 Additional headlight connector bushing, right side of engine compartment (Z56 / 4)
Left front headlight (E1)

– Left fog light (E1e4)

– Left auxiliary driving light (E1e7), right auxiliary driving light (E2e7)

Right front headlight (E2)

– Right fog light (E2e4)
15
48 Sound signal (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 light / instrument cluster
K6 Stop light relay
K7 Right turn signal relay
K8 Starter relay (electromagnetic switch, terminal 50)
K9 58R relay circuit (right standing lamp)
K10 Spare
K11 Relay circuit 15 with delay (612.963 and 628.963 motors only)
K12 Relay 15 circuit
K13 Relay circuit 58L (left standing lamp)
K14 Comfort relay (windows / roof / mirrors)
K15 Central locking relay, tailgate unlocking
K16 Spare
K17 Front windshield 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 door
K24 Central locking relay: unlock driver’s door and fuel filler flap
K25 Spare
K26 Engine fan relay, stage 1, with air conditioning
K27 Rear door washer pump relay
K28 Secondary air injection pump relay
K29 Rear fog light relay

Fuses and module box, right front legroom

Mercedes-Benz M-Class W163 – fuse box diagram – right side legs
No. Combined function
ZA
1 AIRBAG OFF indicator light 7.5
2 Front cigarette lighter ( with ashtray illumination) For VIN A289564, X754619:

20

From VIN A289565, X754620:

15
3 Tailgate wiper motor 15
4 From VIN A289564, X754619: E-Call control unit (only (USA))

From VIN A289565, X754620: front blower motor
7,5
40
5 Vacuum cleaner / air conditioner To VIN A289564, X754619:

7.5

From VIN A289565, X754620:

15
6 Interior socket 20
7 Not assigned
8 Heated left front seat cushion and heated right front seat cushion

Unassigned
To VIN A289564, X754619:

20

From VIN A289565, X754620
9 Not assigned
10 Left front seat adjustment switch To VIN A289564, X754619:

30

From VIN A289565, X754620:

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

30

From 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 traffic light From VIN A289565, X754620:

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

7,5
24 Rear window lift motors and lower control panel power supply From VIN A289565, X754620:

25
25 Front window lift motors and lower control panel power supply From VIN A289565, X754620:

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

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