2005-2011 Mercedes ML-Class (W164) Fuse Box Diagram

Luggage compartment fuse box

The load compartment fuse and relay box is installed in the load compartment on the right of the wheelhouse.

  1. Open the cargo compartment 
  2. Insert a suitable object such as a coin into the slot of lock (1)
  3. Turn lock (1) by 90° in direction of arrow.
  4. Remove cover (2)
→31.05.2006
01.06.2006→ 
Fuses Specifications
No. A Description
20 5 →2008: Roof antenna module
2009→: Interference suppression filter for radio antenna
2009→: Microphone array control unit (Japanese version)
21 5 RCP [HBF] control unit
22 5 PTS control unit
STH radio remote control receiver
23 10 DVD player
Rear audio control unit
Portable CTEL separation point (Japanese version)
E-net compensator
Bluetooth module
Universal Portable CTEL Interface (UPCI [UHI]) control unit (Japanese version)
24 40 Right front reversible emergency tensioning retractor
25 15 COMAND operating, display and control unit
26 25 Right front door control unit
27 30 Passenger-side front seat adjustment control unit with memory
Front passenger seat adjustment comfort relay
28 30 Driver-side front seat adjustment control unit, with memory
Driver seat adjustment comfort relay
29 40 Left front reversible emergency tensioning retractor
30 40 2009→: Folding rear bench seat control unit
M156:
    Left fuel pump control unit
    Right fuel pump control unit  
ML 450 Hybrid: Fuel pump control unit circuit 30 connector sleeve
31 10 HS [SIH], seat ventilation and steering wheel heater control unit
32 15 AIRmatic control unit
33 25 KEYLESS-GO control unit
34 25 Left front door control unit
35 30 Amplifier for sound system
2009→: Subwoofer amplifier
36 10 Emergency call system control unit
37 5 Backup camera power supply module (Japanese version)
Backup camera control unit (Japanese version)
38 10 Digital TV tuner
→2008: Audio gateway control unit (Japanese version)
2009→: TV combination tuner (analog/digital) (Japanese version)
ML 450 Hybrid: High voltage battery module
39 7.5 Tire pressure monitor [RDK] control unit
→2008: SDAR control unit (USA version)
2009→: High definition tuner control unit
2009→: Digital Audio Broadcasting control unit
2009→: External navigation separation point (South Korea version)
40 40 →2008: Rear-end door closing control unit
30 2009→: Rear-end door closing control unit
41 25 Overhead control panel control unit
42 25 →2008: SR motor
2009→: Overhead control panel control unit
43 20 2009→ (M272, M273): Fuel pump control unit
→31.05.2006: Tailgate wiper motor
01.06.2006→: Not assigned
44 20 →31.05.2006: Left 2nd seat row socket
→31.05.2006: Right 2nd seat row socket
01.06.2006→: Not assigned
2009→: Front interior socket (USA)
2009→: 115V socket
45 20 Cargo area connector box
→2008: Front interior socket
2009→: Right 2nd seat row socket
46 15 Front cigar lighter with ashtray illumination
47 10 ML 450 Hybrid: High voltage battery coolant pump
2009→: Left front illuminated door sill molding  
2009→: Right front illuminated door sill molding
48 5 2009→: Rear axle differential lock control unit
2009→ (OM642.820): AdBlue® supply relay
01.07.2009→; ML 450 Hybrid or W164.1 (with M272), W164.8 (with OM642 or M273):
Pyrotechnical separator
49 30 Heated rear window
50 10 →31.05.2006: Tailgate wiper motor
15 01.06.2006→: Tailgate wiper motor
51 5 Activated charcoal canister shutoff valve
52 5 →31.05.2009: Left front reversible emergency tensioning retractor
→31.05.2009: Right front reversible emergency tensioning retractor
2009→: Rear axle differential lock control unit
53 5 AIRmatic control unit
M156:

    Left fuel pump control unit
    Right fuel pump control unit
M272, M273: Fuel pump control unit
2009→: Transfer case control unit
54 5 Headlamp range adjustment control unit
Front SAM control unit
55 7.5 Instrument cluster
Rotary light switch
56 5 →31.05.2006: Data link connector
OM642.820: AdBlue® control unit
ML 450 Hybrid:
Fuel pump control unit
57 20 →2008: Fuel pump with fuel gauge sensor
except M156: Fuel pump
58 7.5 Datalink connector
Central gateway control unit
59 7.5 2009→: Driver NECK-PRO head restraint solenoid
2009→: Front passenger NECK-PRO head restraint solenoid
60 5 Glove compartment illumination with switch
Engine compartment fuse and relay box
Rear SAM control unit
Cell phone separation point
VICS+ETC voltage supply separation point (Japan version)
Multicontour seat pneumatic pump (2009→)
External navigation separation point (South Korea)
Electrical connection, Blind-Spot-Monitoring interior rear bumper (as of 1.8.10)
Emergency call system control unit (USA)
61 10 →2008:
   Restraint systems control unit
   Right front seat contacting strip
7.5 2009→:
   Restraint systems control unit
   Right front seat contacting strip
62 30 Front passenger seat adjustment switch
63 30 Driver lumbar support regulator control unit
Front passenger lumbar support regulator control unit
Driver seat adjustment switch
64 -  -
65 -  -
66 30 2009→: Multicontour seat pneumatic pump
67 25 Rear air conditioning blower motor
68 25 →2008: Left 2nd row seat heated cushion
→2008: Right 2nd row seat heated cushion
2009→: HS [SIH], seat ventilation and steering wheel heater control unit
69 30 2009→: Rear axle differential lock control unit
70 20 Trailer hitch socket (13-pin) (2009→)
Trailer hitch socket (7-pin)
15 Trailer hitch socket (13-pin) (→2008)
71 30 Electric brake control separation point
72 15 Trailer hitch socket (13-pin)
Relay
K →31.05.2006: Terminal 15R power outlet relay, with power-down
01.06.2006→:
Circuit 15R seat adjustment
2009→: Relay, circuit 15R sockets (with K power-down) (power supply of electric seat adjustment)
L Terminal 30X
M Heated rear window relay
N Circuit 15 relay / terminal 87FW
O Fuel pump
P Rear wiper
R Circuit R 115R
S Reserve 1 (changer) (power supply for front socket)
T 01.06.2006→Circuit 30, socket for 2nd seat row and load compartment
2009→: Reserve 2 (normally open contact) (power supply for center and rear sockets)
U 01.06.2006→Circuit 30, trailer
V 01.06.2006→ -

Gasoline:

Diesel:

Engine compartment fuse box

  1. With a dry cloth, remove any moisture from fuse box cover (1).
  2. Pull clamps (2) in direction of arrow.
  3. Lift fuse box cover (1) up.
Fuses Specifications
No. A Description
100 30 Wiper motor
101 15 AAC with integrated control additional fan motor
M156: Terminal 87 M3e connector sleeve
M156, M272, M273: Purge control valve
M272, M273:

   Circuit 87 M1e connector sleeve
   Suction-type fan control unit
OM629:
   CDI control unit
   Circuit 30 connector sleeve
   Suction fan control unit
ML 450 Hybrid:
   ME-SFI [ME] control unit
   Engine compartment/engine connector
OM642 (except 642.820):
   CDI control unit
   O2 sensor upstream of CAT
   Suction fan control unit
OM642.820: O2 sensor upstream of CAT
102 15 OM642.820 (→31.7.10): Recirculation pump for transmission oil cooler
M156: Engine coolant circulation pump
10 ML 450 Hybrid:
    Recirculation pump for transmission oil cooler
    Low temperature coolant pump
103 25 Circuit 87 M1e connector sleeve
CDI control unit
→2008; M113, M272, M273: ME-SFI [ME] control unit
20 ML 450 Hybrid: ME-SFI [ME] control unit
M272, M273:ME-SFI [ME] control unit
104 15 M156, M272, M273: Terminal 87M2e connector sleeve
OM629: Terminal 87 connector sleeve
OM642.820: Terminal 87 D2 connector sleeve 
OM642 (except OM642.820): CDI control unit
ML 450 Hybrid:
   Interior and engine wiring harness connector
   Engine compartment fuse and relay box
M113: ME control unit
105 15 M156, M272, M273:
   ME-SFI [ME] control unit
   Circuit 87 M1 i connector sleeve
OM629: CDI control unit
OM642.820:
   CDI control unit
   Fuel pump relay 
OM642 (except 642.820):
   CDI control unit 
   Fuel pump relay (2009→)
   Starter (→2008)
ML 450 Hybrid: Interior and engine wiring harness connector
M113: Circuit 15 connector sleeve, fused
106 - Spare
107 40 M156, M272, M273: Electric air pump
ML 450 Hybrid:
Engine compartment/engine connector
108 40 AIRMATIC compressor unit
109 25 ESP control unit
ML 450 Hybrid: Regenerative braking system control unit
110 10 Alarm signal siren
111 30 Intelligent servo module for DIRECT SELECT
112 7.5 Left front lamp unit 
Right front lamp unit
113 15 Left fanfare horn
Right fanfare horn
114 5 →2008: -
2009→: Front SAM control unit
OM629:
CDI control unit
115 5 ESP control unit
ML 450 Hybrid:
Regenerative braking system control unit
116 7.5 Electric controller unit (VGS)
ML 450 Hybrid: Hybrid vehicle fully integrated transmission control controller unit
117 7.5 DTR controller unit
118 5 M156, M272, M273: ME-SFI [ME] control unit
OM629, 642: CDI control unit
119 5 OM642.820: CDI control unit
120 10 M156, M272, M273:
   ME-SFI [ME] control unit
   Engine circuit 87 relay
M113: ME-SFI [ME] control unit
OM629: CDI control unit
OM629, OM642: Engine circuit 87 relay
121 20 STH heater unit
ML 450 Hybrid: Fuse and relay box 2, engine compartment
122 25 M156, M272, M273, OM629, OM642: Starter
M113, M272, M273: ME-SFI [ME] control unit
123 20 OM642: Fuel filter condensation sensor with heating element
OM629, OM642 (01.09.2008→):
Fuel filter condensation sensor with heating element
124 7.5 W164.120/122/822/825 (01.06.2009→), W164.121/124/125/824: Electrohydraulic power steering
ML 450 Hybrid:  
   Electrohydraulic power steering
   Electric refrigerant compressor control unit
125 7.5 ML 450 Hybrid:  Power electronics control unit
Relay
A Wiper level 1/2
B Wiper ON / OFF
C OM642: Additional circulation pump for transmission oil cooling
M156: Engine coolant circulation pump
D Terminal 87 engine
E Secondary air injection pump
F Fanfare horn
G Air suspension compressor
H Circuit 15
I Starter

Battery compartment prefuse box

The battery compartment prefuse box is located next to the power supply battery below the front passenger seat.

Fuses Specifications
No. A Description
78 100 →30.06.2009: PTC heater booster
150 →2008; 01.07.2009→: PTC heater booster
79 60 Rear SAM control unit
80 60 Rear SAM control unit
81 40 OM642.820: AdBlue® relay supply
150 01.07.2009→ (except OM642.820): Engine compartment fuse and relay box
W164.195: Vacuum pump relay (+)
82 100 Load compartment fuse and relay box
83 5 Weight Sensing System (WSS) control unit
84 10 Restraint systems control unit
85 25 2009→: DC/AC converter control unit (115 V socket)
30 →2008: Intelligent servo module for DIRECT SELECT
86 30 Cockpit fuse box
87 30 Transfer case control unit
15 W164.195: Fuse and relay box 2, engine compartment
88 70 Front SAM control unit
89 70 Front SAM control unit
90 70 Front SAM control unit
91 40 2009→: AC air recirculation unit
→2008: Blower regulator

Front prefuse

Fuses Specifications
No. A Description
4 -  -
5 40 ML 450 Hybrid: Regenerative braking system control unit
6 40 ESP control unit 
80 ML 450 Hybrid: Electrohydraulic power steering
7 100 AAC with integrated control additional fan motor
8 150 →2008: Engine compartment fuse and relay box
100 2009→: Engine compartment fuse and relay box

Fuse box in passenger compartment

The cockpit fuse box is located in the cockpit on the passenger-side.

Fuses Specifications
No. A Description
10 10 Booster blower electronic blower controller
11 5 Instrument cluster
12 15 AAC [KLA] control and operating unit
Comfort AAC [KLA] control and operating unit
13 5 Steering column module Upper control panel control unit
14 7.5 EIS [EZS] control unit
15 5 Electronic compass
Media interface control unit
16 -  -
17 -  -
18 -  -

AdBlue® fuse block

Fuses Specifications
No. A Description
A 15 AdBlue® control unit
B 20 AdBlue® control unit
C 7.5 AdBlue® control unit
D -  -