2006-2012 Mercedes-Benz R-Class (W251) Fuse Box Diagram
Location
F3 - Cockpit fuse box
F4 - Load compartment fuse and relay
F32 - Front prefuse
F33 - Battery compartment prefuse box box
F58 - Engine compartment fuse and relay
Fuse Box in Luggage Compartment
Opening:
Open the cargo compartment.
Lift the cargo compartment cover.
Secure cargo compartment cover with securing hook.
Fold cover 1 to the left as indicated by the arrow.
Closing:
Install cover 1 in reverse order.
→31.05.2006
01.06.2006→
| No. | A | Description |
|---|---|---|
| 20 | 5 | Interference suppression filter for radio antenna
Microphone array control unit (→2008; except Japan) Voice control system (VCS [SBS]) control unit (→2008; USA) |
| 21 | 5 | RCP [HBF] control unit |
| 22 | 5 | Parktronic system (PTS) control unit
Stationary heater (STH) radio remote control receiver (2009→) |
| 23 | 10 | DVD player (rear entertainment system)
E-net compensator Rear audio control unit (→2008) Portable CTEL separation point (→2008; Japan) Universal Portable CTEL Interface (UPCI [UHI]) control unit (→2008; Japan) COMAND operating, display and controller unit (2009→) |
| 24 | 40 | Right front reversible emergency tensioning retractor |
| 25 | 15 | →2008:
Radio (except USA and Japan) Radio and navigation unit (except USA and Japan) COMAND operating, display and controller unit |
| 20 | 2009→:
Radio Radio and navigation unit COMAND operating, display and controller unit |
|
| 26 | 25 | Right front door control unit |
| 27 | 30 | Front passenger seat adjustment comfort relay (→2008)
Passenger-side front seat adjustment control unit with memory |
| 28 | 30 | Driver seat adjustment comfort relay (→2008)
Driver-side front seat adjustment control unit, with memory |
| 29 | 40 | Left front reversible emergency tensioning retractor |
| 30 | 40 | →2008:
M156: Left fuel pump control unit Right fuel pump control unit 2009→: Fuel system control unit |
| 31 | 10 | HS [SIH], seat ventilation and steering wheel heater control unit |
| 32 | 15 | AIRmatic with ADS control unit
Rear axle level control system control unit |
| 33 | 25 | Keyless Go control unit |
| 34 | 25 | Left front door control unit |
| 35 | 30 | Amplifier for sound system
Subwoofer amplifier (2009→) |
| 36 | 5 | →2008: Emergency call system control unit |
| 10 | →2008:
Japan: VICS+ETC voltage supply separation point 2009→: Emergency call system control unit |
|
| 37 | 5 | Backup camera voltage supply module (01.06.2006→, except USA and Japan)
Backup camera control unit (01.06.2006→, Japan) |
| 38 | 10 | Audio gateway control unit (→2008; Japan)
Digital TV tuner TV combination tuner (analog/digital) |
| 39 | 7.5 | →2008:
SDAR control unit (USA) Tire pressure monitor (TPM) [RDK] control unit 2009→: Tire pressure monitor (TPM) [RDK] control unit High definition tuner control unit Digital Audio Broadcasting control unit External navigation separating point (South Korea) |
| 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 | Overhead control panel control unit |
| 43 | 20 | →31.05.2006:
Tailgate wiper motor Left 3rd seat row socket Right 3rd seat row socket 2009→: M272, M273, M276: Fuel system control unit OM642.872: Right fuel system control unit |
| 44 | 20 | →31.05.2006:
Left 2nd seat row socket Right 2nd seat row socket 2009→: USA: Front interior socket 115 V socket |
| 45 | 20 | →2008:
Cargo area connector box →31.05.2006: Front interior socket 01.06.2006→: Left 2nd seat row socket Right 2nd seat row socket 2009→: Right 2nd seat row socket Luggage compartment socket |
| 46 | 15 | Front cigar lighter with ashtray illumination |
| 47 | 10 | 2009→:
Valid for retrofit: Left front illuminated door sill molding Right front illuminated door sill molding |
| 48 | 5 | 2009→:
OM642.870: AdBlue® supply relay |
| 49 | 30 | Right antenna coil (→2008)
Heated rear window |
| 50 | 10 | →2008: Tailgate wiper motor |
| 15 | 2009→: Tailgate wiper motor | |
| 51 | 5 | Activated charcoal filter shutoff valve |
| 52 | 5 | →30.06.2009:
Left front reversible emergency tensioning retractor Right front reversible emergency tensioning retractor |
| 53 | 5 | AIRmatic with ADS control unit
Rear axle level control system control unit →2008: M156: Left fuel pump control unit Right fuel pump control unit 2009→: M272, M273, M276: Fuel system control unit OM642.872: Right fuel system control unit |
| 54 | 5 | Front SAM control unit
Headlamp range adjustment control unit (bi-xenon headlamp unit) |
| 55 | 7.5 | Rotary light switch
Instrument cluster |
| 56 | 5 | →2008: Data link connector
2009→: OM642.870: AdBlue® control unit |
| 57 | 20 | →2008: Fuel pump with fuel gauge sensor
2009→: OM642.870: Fuel pump |
| 58 | 7.5 | Data link connector
Central gateway control unit |
| 59 | 7.5 | Driver NECK-PRO head restraint solenoid
Front passenger NECK-PRO head restraint solenoid |
| 60 | 5 | →2008:
Glove compartment illumination with switch Rear SAM control unit Engine compartment fuse and relay box CTEL separation point VICS+ETC voltage supply separation point (Japan) Emergency call system control unit 2009→: Glove box illumination with switch Engine compartment fuse and relay box Rear SAM control unit) Cell phone separation point VICS+ETC power supply separating point (Japan) Multicontour seat pneumatic pump External navigation separating point (South Korea) Emergency call system control unit Rear bumper interior Blind Spot Monitoring electrical connector |
| 61 | 10 | Restraint systems control unit
Right front seat contacting strip |
| 62 | 30 | Front passenger seat adjustment switch
Front passenger lumbar support regulator control unit |
| 63 | 30 | Driver seat adjustment switch
Driver lumbar support regulator control unit |
| 64 | - | - |
| 65 | - | - |
| 66 | 30 | 2009→: Multicontour seat pneumatic pump |
| 67 | 25 | Rear air conditioning blower motor |
| 68 | 25 | →2008: Heated rear seats
2009→: Seat heater, seat ventilation and steering wheel heater control unit |
| 69 | 30 | - |
| 70 | 20 | Trailer hitch socket (13-pin)
Trailer hitch socket (7-pin) (USA) |
| 71 | 30 | USA: Electric brake control separation point |
| 72 | 15 | Trailer hitch socket (13-pin) |
| Relays | ||
| K | →31.05.2006: Terminal 15R power outlet relay, with power-down
01.06.2006→: Relay, circuit 15R sockets (with power-down) (power supply of electric seat adjustment) |
|
| L | Terminal 30X | |
| M | Heated rear window | |
| N | Circuit 15 relay / terminal 87FW | |
| O | Fuel pump | |
| P | Rear wiper | |
| R | Circuit R relay 15R | |
| S | Reserve 1 (changer) (power supply for front socket) | |
| T | 01.06.2006→: Reserve 2 (normally open contact) (power supply for center and rear sockets) | |
| U | 01.06.2006→: Trailer relay terminal 30 | |
| V | 01.06.2006→: Spare relay 2 | |
Gasoline:
- 3.0L - M272 (R280, R300)
- 3.5L - M272 (R350, R350 4MATIC)
- 5.0L - M113 (R500 4MATIC)
- 5.5L - M273 (R500 4MATIC)
- 6.2L - M156 (R63 AMG 4MATIC)
Diesel:
- 3.0L - OM642 (R280 CDI 4MATIC, R300 CDI 4MATIC, R300 CDI BlueEFFICIENCY, R350 BlueTEC 4MATIC, R320 CDI, R320 CDI 4MATIC, R350 CDI 4MATIC)
Fuse Box in Passenger Compartment
Opening:
Open the front passenger door.
Pull cover (1) in direction of arrow.
Closing:
Clip upper end of cover (1) into opening.
Push on lower end of cover (1) until it engages.
| No. | A | Description |
|---|---|---|
| 10 | 10 | Booster blower electronic blower controller |
| 11 | 5 | Instrument cluster |
| 12 | 15 | Automatic air conditioning [KLA] control and operating unit
Comfort automatic air conditioning [KLA] control and operating unit |
| 13 | 5 | Upper control panel control unit
Steering column module |
| 14 | 7.5 | CD changer (→2008)
EZS control unit |
| 15 | 5 | Electronic compass
Media interface control unit (2009→) |
| 16 | - | - |
| 17 | - | - |
| 18 | - | - |
Fuse Box in Engine Compartment
Opening:
Open the hood.
With a dry cloth, remove any moisture from the fuse box (1).
Pull clamp (1) in direction of arrow.
Lift fuse box cover (2) up.
Closing:
Make sure the sealing rubber is positioned properly.
Press fuse box cover (2) down and secure with clamp (1).
Close the hood after checking or replacing fuses.
| No. | A | Description |
|---|---|---|
| 100 | 30 | Wiper motor |
| 101 | 15 | →2008:
AAC with integrated control additional fan motor M113, M272: Purge control valve M272: Radio interference suppression capacitor 1 Radio interference suppression capacitor 2 Cylinder 1 ignition coil Cylinder 2 ignition coil Cylinder 3 ignition coil Cylinder 4 ignition coil Cylinder 5 ignition coil Cylinder 6 ignition coil OM642: O2 sensor upstream of CAT CDI control unit 2009→: Engine and air conditioning electric suction fan with integrated control M272, M273: Purging switchover Circuit 87 M1e connector sleeve OM642: CDI control unit O2 sensor upstream of CAT OM642.870/872: O2 sensor upstream of CAT |
| 102 | 15 | →2008:
OM642: Recirculation pump for transmission oil cooler M156: Engine coolant circulation pump 2009→: OM642, OM642.870 (→31.07.2010): Transmission cooler circulation pump M276: Charge air cooler circulation pump |
| 103 | 25 | →2008:
M113: ME-SFI [ME] control unit Cylinder 1 fuel injection valve Cylinder 2 fuel injection valve Cylinder 3 fuel injection valve Cylinder 4 fuel injection valve Cylinder 5 fuel injection valve Cylinder 6 fuel injection valve Cylinder 7 fuel injection valve Cylinder 8 fuel injection valve OM642: CDI control unit 2009→: OM642.950, OM642.870/872: CDI control unit M272: ME-SFI [ME] control unit M276: ME-SFI [ME] control unit Engine/engine compartment connector |
| 104 | 15 | →2008:
M113: Left O2 sensor upstream TWC [KAT] Right oxygen O2 sensor upstream of catalytic converter Left O2 sensor downstream TWC [KAT] Right O2 sensor downstream TWC [KAT] Variable intake manifold switchover valve EGR vacuum transducer Air pump change-over valve M272: Heating system shutoff valve Intake manifold tumble flap switchover valve Air pump change-over valve Three-disk thermostat valve Pressure regulating on the valve power steering unit pump OM642: Left hot film mass air flow sensor Right hot film mass air flow sensor Intake port shutoff motor Glow time output stage Vent line heater element Power steering pump pressure regulator valve Left exhaust gas recirculation positioner Boost pressure positioner 2009→: M272, M273: Connector sleeve, circuit 87 M2e OM642.950: Circuit 87 connector sleeve OM642.870/872: Circuit 87D2 connector sleeve |
| 105 | 15 | →2008:
M113: ME control unit Radio interference suppression capacitor 1 Radio interference suppression capacitor 2 Cylinder 1 ignition coil Cylinder 2 ignition coil Cylinder 3 ignition coil Cylinder 4 ignition coil Cylinder 5 ignition coil Cylinder 6 ignition coil Cylinder 7 ignition coil Cylinder 8 ignition coil M272: ME control unit Hot film mass air flow sensor Hall sensor for left inlet camshaft Right intake camshaft Hall sensor Left exhaust camshaft Hall sensor Right exhaust camshaft Hall sensor Left intake camshaft solenoid Right camshaft intake solenoid Left exhaust camshaft solenoid Right exhaust camshaft solenoid Cylinder 1 fuel injection valve Cylinder 2 fuel injection valve Cylinder 3 fuel injection valve Cylinder 4 fuel injection valve Cylinder 5 fuel injection valve Cylinder 6 fuel injection valve OM642: CDI control unit 2009→: M272, M273: ME-SFI [ME] control unit Circuit 87 M1i connector sleeve M276: Engine/engine compartment connector OM642.950: CDI 1.0 PK control unit Engine compartment/interior compartment connector OM642.870/872: CDI control unit Engine compartment/interior compartment connector Circuit 87 connector sleeve |
| 106 | - | - |
| 107 | 40 | M113, M272, M273: Electric air pump |
| 108 | 40 | AIRmatic compressor unit |
| 109 | 25 | ESP control unit |
| 110 | 10 | Alarm signal horn with additional batteryAlarm 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:
Front SAM control unit M272: ME control unit 2009→: Front SAM control unit |
| 115 | 5 | ESP control unit |
| 116 | 7.5 | Electric controller unit (VGS) |
| 117 | 7.5 | Distronic (DTR) controller unit |
| 118 | 5 | M272, M273, M276: ME control unit
OM642: CDI control unit |
| 119 | 5 | OM642.870/872: CDI control unit |
| 120 | 10 | →2008:
M113, M272: ME control unit OM642: CDI control unit 2009→: M272, M273, M276: Engine circuit 87 relay ME-SFI [ME] control unit OM642: Engine circuit 87 relay |
| 121 | 20 | STH heater unit |
| 122 | 25 | M113, M272, M273, M276, OM642: Starter |
| 123 | 20 | Diesel (01.09.2008→): Fuel filter condensation sensor with heating element |
| 124 | 7.5 | 2009→: Electrohydraulic power steering |
| 125 | - | - |
| Relays | ||
| A | Wiper stage 1 and 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 | Horn | |
| G | Air suspension compressor | |
| H | Circuit 15 | |
| I | Starter | |
Battery Compartment Prefuse Box
| No. | A | Description |
|---|---|---|
| 78 | 150 | Diesel: Heater booster control unit |
| 79 | 60 | Rear SAM control unit |
| 80 | 60 | Rear SAM control unit |
| 81 | 40 | 2009→:
OM642.870: AdBlue® supply relay M276: Engine compartment fuse and relay box |
| 82 | 150 | →2008: Load compartment fuse and relay box |
| 100 | 2009→: Load compartment fuse and relay box | |
| 83 | 5 | USA: WSS (Weight Sensing System) control unit |
| 84 | 10 | Restraint systems control unit |
| 85 | 25 | 2009→: DC/AC converter control unit (115 V socket) |
| 86 | 30 | Cockpit fuse box |
| 87 | 30 | - |
| 88 | 70 | →2008: Front SAM control unit |
| 40 | 2009→: Front SAM control unit | |
| 89 | 70 | Front SAM control unit |
| 90 | 70 | Front SAM control unit |
| 91 | 40 | Blower regulator |
Front Prefuse
| No. | A | Description |
|---|---|---|
| 4 | - | - |
| 5 | 40 | 01.07.2009→: ESP control unit |
| 6 | 40 | →30.06.2009: ESP control unit |
| 100 | 01.07.2009→: Electrohydraulic power steering | |
| 7 | 100 | AAC with integrated control additional fan motor |
| 8 | 150 | Engine compartment fuse and relay box |