2005-2011 Mercedes ML-Class (W164)
Location and description of fuses and relay Mercedes-Benz ML-Class (W164) with engine 3.5L (ML 350, ML450 Hybrid), 5.0L and 5.5L (ML 500 ), 6.2L (ML 63 AMG) and diesel 3.0L (ML 280 CDI, ML 300 CDI, ML320 CDI, ML350 CDI), 4.0L (ML 420 CDI, ML 450 CDI) (2005, 2006, 2007, 2008, 2009, 2010, 2011)
Luggage compartment fuse box

The load compartment fuse and relay box is installed in the load compartment on the right of the wheelhouse.
- Open the cargo compartment
- Insert a suitable object such as a coin into the slot of lock (1)
- Turn lock (1) by 90° in direction of arrow.
- Remove cover (2)
→31.05.2006

01.06.2006→

| 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:
- ML 350 - 3.5L (M272)
- ML450 Hybrid - 3.5L
- ML 500 - 5.0L (M113) and 5.5L (M273)
- ML 63 AMG - 6.2L (M156)
Diesel:
- ML 280 CDI, ML 300 CDI BlueEFFICIENCY - 3.0L (OM 642)
- ML 320 CDI, ML 350 CDI, ML 350 BlueTEC - 3.0L (OM 642)
- ML 420 CDI, ML 450 CDI - 4.0L (OM629)
Engine compartment fuse box

- With a dry cloth, remove any moisture from fuse box cover (1).
- Pull clamps (2) in direction of arrow.
- Lift fuse box cover (1) up.

| 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.
| 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

| 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.
| 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

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





