Mercedes-Benz R-Class Fuse Box Diagram and Location (2006-2013)
The Mercedes-Benz R-Class (W251), produced from 2006 to 2013, is a luxury crossover SUV/MPV that blends the spaciousness of a minivan with the comfort and performance of a premium SUV. Designed for family travel and executive transport, the R-Class offered all-wheel drive (4MATIC), high-end interior materials, and a range of powerful engines, making it a versatile and luxurious option in its segment.
In this article, you will find fuse box diagrams for the Mercedes-Benz R-Class, covering models R280, R300, R320, R350, R500, R550, and R63 AMG for the years 2006, 2007, 2008, 2009, 2010, 2011, 2012, and 2013. These diagrams provide crucial insights into the fuse layout, helping vehicle owners, mechanics, and technicians locate and understand the function of each fuse and relay.
What’s Included:
Fuse Box Diagrams – Clear and detailed visuals to help identify fuses, relays, and circuit breakers.
Fuse Panel Locations – Step-by-step guidance on where to find the fuse panels inside the Mercedes-Benz R-Class.
Fuse Assignments – Comprehensive descriptions of each fuse and relay function for accurate diagnostics and troubleshooting.
Whether you’re searching for the fuse panel layout, replacing a blown fuse, or diagnosing an electrical issue, this guide is an essential resource. It ensures that your Mercedes-Benz R-Class’s electrical system remains functional and reliable for long road trips, daily commuting, and luxury passenger transport.
Keep your Mercedes-Benz R-Class (2006–2013) in peak condition with this detailed fuse box, fuse panel, and relay guide!
The cigar lighter/power outlet fuses (all are located in the Luggage Compartment Fuse Box) in the Mercedes-Benz R-Class are:
The fuse box is located in the engine compartment (front-right-side), under the cover.
Fuse box diagram
Assignment of the fuses and relay in the engine compartment
№
Fused function
Amp
100
Wiper motor
30
101
up to 2008: AAC with integrated control additional fan motor Valid for engines 113, 272: Purge control valve Valid for engine 272: Radio interference suppression capacitor 1 Radio interference suppression capacitor 2 Cylinder 1-6 ignition coil
Valid for engine 642: O2 sensor upstream of CAT CDI control unit as of 2009: Engine and air conditioning electric suction fan with integrated control Valid for engine 272, 273: Purging switchover Circuit 87 M1e connector sleeve Valid with engine 642: CDI control unit O2 sensor upstream of CAT Valid for engine 642.870/872: O2 sensor upstream of CAT
15
102
up to 2008: Valid for engine 642: Recirculation pump for transmission oil cooler Valid for engine 156: Engine coolant circulation pump as of 2009: Valid for engine 642, engine 642.870 up to 31.7.10: Transmission cooler circulation pump Valid with engine 276: Charge air cooler circulation pump
15
103
up to 2008: Valid for engine 113: ME-SFI [ME] control unit Cylinder 1-8 fuel injection valve
Valid for engine 642: CDI control unit as of 2009: Valid for engine 642.950, 642.870/872: CDI control unit Valid for engine 272: ME-SFI [ME] control unit Valid with engine 276: ME-SFI [ME] control unit Engine/engine compartment connector
25
104
up to 2008: Valid for engine 113: 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 Valid for engine 272: 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 Valid for engine 642: 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 as of 2009: Valid for engine 272, 273: Connector sleeve, circuit 87 M2e Valid for engine 642.950: Circuit 87 connector sleeve Valid for engine 642.870/872: Circuit 87D2 connector sleeve
15
105
up to 2008: Valid for engine 113: ME control unit Radio interference suppression capacitor 1 Radio interference suppression capacitor 2 Cylinder 1-8 ignition coil
Valid for engine 272: 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 1-6 fuel injection valve
Valid for engine 642: CDI control unit as of 2009: Valid for engine 272, 273: ME-SFI [ME] control unit Circuit 87 M1i connector sleeve Valid with engine 276: Engine/engine compartment connector Valid for engine 642.950: CDI 1.0 PK control unit Engine compartment/interior compartment connector Valid for engine 642.870/872: CDI control unit Engine compartment/interior compartment connector Circuit 87 connector sleeve
15
106
–
–
107
Valid for engine 113, 272, 273: Electric air pump
40
108
AIRmatic compressor unit
40
109
ESP control unit
25
110
Alarm signal horn with additional batteryAlarm siren
10
111
Intelligent servo module for DIRECT SELECT
30
112
Left front lamp unit Right front lamp unit
7.5
113
Left fanfare horn Right fanfare horn
15
114
up to 2008: Front SAM control unit Valid for engine 272: ME control unit as of 2009: Front SAM control unit
5
115
ESP control unit
5
116
Electric controller unit (VGS)
7.5
117
Distronic (DTR) controller unit
7.5
118
Valid for engine 272, 273, 276: ME control unit Valid for engine 642: CDI control unit
5
119
Valid for engine 642.870/872: CDI control unit
5
120
up to 2008: Valid for engine 113, 272: ME control unit Valid for engine 642: CDI control unit as of 2009: Valid for engine 272, 273, 276: Engine circuit 87 relay ME-SFI [ME] control unit Valid with engine 642: Engine circuit 87 relay
10
121
STH heater unit
20
122
Valid for engine 113, 272, 273, 276, 642: Starter
25
123
Valid for diesel engine as of 1.9.08: Fuel filter condensation sensor with heating element
20
124
as of 2009: Electrohydraulic power steering
7.5
125
–
–
Relays
A
Wiper stage 1 and 2 relay
B
Wiper ON / OFF
C
Valid for engine 642: Additional circulation pump for transmission oil cooling Valid for engine 156: Engine coolant circulation pump
The fuse box is located in the luggage compartment (on the right-side), under the trunk floor and soundproofing.
Fuse box diagram
Up to 31.05.2006
As of 01.06.2006
Assignment of the fuses and relay in the luggage compartment
№
Fused function
Amp
20
Interference suppression filter for radio antenna Microphone array control unit (up to 2008; except Japan version) Voice control system (VCS [SBS]) control unit (up to 2008; USA version)
5
21
RCP [HBF] control unit
5
22
Parktronic system (PTS) control unit Stationary heater (STH) radio remote control receiver (as of 2009)
5
23
DVD player (rear entertainment system) E-net compensator Rear audio control unit (up to 2008) Portable CTEL separation point (up to 2008; Japan version) Universal Portable CTEL Interface (UPCI [UHI]) control unit (up to 2008; Japan version) COMAND operating, display and controller unit (as of 2009)
10
24
Right front reversible emergency tensioning retractor
40
25
up to 2008: Radio (except USA version and Japan version) Radio and navigation unit (except USA version and Japan version) COMAND operating, display and controller unit
15
25
as of 2009: Radio Radio and navigation unit COMAND operating, display and controller unit
20
26
Right front door control unit
25
27
Front passenger seat adjustment comfort relay (up to 2008) Passenger-side front seat adjustment control unit with memory
30
28
Driver seat adjustment comfort relay (up to 2008) Driver-side front seat adjustment control unit, with memory
30
29
Left front reversible emergency tensioning retractor
40
30
up to 2008: Valid for engine 156: Left fuel pump control unit Right fuel pump control unit as of 2009: Fuel system control unit
40
31
HS [SIH], seat ventilation and steering wheel heater control unit
10
32
AIRmatic with ADS control unit Rear axle level control system control unit
15
33
Keyless Go control unit
25
34
Left front door control unit
25
35
Amplifier for sound system Subwoofer amplifier (as of 2009)
30
36
up to 2008: Emergency call system control unit
5
36
up to 2008: Japan version: VICS+ETC voltage supply separation point as of 2009: Emergency call system control unit
10
37
Backup camera voltage supply module (as of 01.06.2006, except USA version and Japan version) Backup camera control unit (as of 01.06.2006, Japan version)
5
38
Audio gateway control unit (up to 2008; Japan version) Digital TV tuner TV combination tuner (analog/digital)
10
39
up to 2008: SDAR control unit (USA version) Tire pressure monitor (TPM) [RDK] control unit as of 2009: Tire pressure monitor (TPM) [RDK] control unit High definition tuner control unit Digital Audio Broadcasting control unit External navigation separating point (South Korea version)
7.5
40
up to 2008: Rear-end door closing control unit
40
40
as of 2009: Rear-end door closing control unit
30
41
Overhead control panel control unit
25
42
Overhead control panel control unit
25
43
Up to 31.05.2006: Tailgate wiper motor Left 3rd seat row socket Right 3rd seat row socket as of 2009: Valid for engine 272, 273, 276: Fuel system control unit Valid for engine 642.872: Right fuel system control unit
20
44
Up to 31.05.2006: Left 2nd seat row socket Right 2nd seat row socket as of 2009: USA version: Front interior socket 115 V socket
20
45
up to 2008: Cargo area connector box up to 31.05.2006: Front interior socket as of 01.06.2006: Left 2nd seat row socket Right 2nd seat row socket as of 2009: Right 2nd seat row socket Luggage compartment socket
20
46
Front cigar lighter with ashtray illumination
15
47
as of 2009: Valid for retrofit: Left front illuminated door sill molding Right front illuminated door sill molding
10
48
as of 2009: Valid for engine 642.870: AdBlue® supply relay
5
49
Right antenna coil (up to 2008) Heated rear window
30
50
up to 2008: Tailgate wiper motor
10
50
as of 2009: Tailgate wiper motor
15
51
Activated charcoal filter shutoff valve
5
53
AIRmatic with ADS control unit Rear axle level control system control unit up to 2008: Valid for engine 156: Left fuel pump control unit Right fuel pump control unit as of 2009: Valid for engine 272, 273, 276: Fuel system control unit Valid for engine 642.872: Right fuel system control unit
5
54
Front SAM control unit Headlamp range adjustment control unit (bi-xenon headlamp unit)
5
55
Rotary light switch Instrument cluster
7.5
56
up to 2008: Data link connector as of 2009: Valid for engine 642.870: AdBlue control unit
5
57
up to 2008: Fuel pump with fuel gauge sensor as of 2009: Valid for engine 642.870: Fuel pump
20
58
Data link connector Central gateway control unit
7.5
59
Driver NECK-PRO head restraint solenoid Front passenger NECK-PRO head restraint solenoid
7.5
60
up to 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 version) Emergency call system control unit as of 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 version) Multicontour seat pneumatic pump External navigation separating point (South Korea version) Emergency call system control unit Rear bumper interior Blind Spot Monitoring electrical connector
5
61
Restraint systems control unit Right front seat contacting strip
10
62
Front passenger seat adjustment switch Front passenger lumbar support regulator control unit
30
63
Driver seat adjustment switch Driver lumbar support regulator control unit
30
64
–
–
65
–
–
66
as of 2009: Multicontour seat pneumatic pump
30
67
Rear air conditioning blower motor
25
68
up to 2008: Heated rear seats as of 2009: Seat heater, seat ventilation and steering wheel heater control unit
USA version: Electric brake control separation point
30
72
Trailer hitch socket (13-pin)
15
Relays
K
to 31.05.2006: Terminal 15R power outlet relay, with power-down as of 01.06.2006: Relay, circuit 15R sockets (with 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 relay
P
Rear wiper relay
R
Circuit R relay 15R
S
Reserve 1 (changer) (power supply for front socket)
T
as of 01.06.2006: Reserve 2 (normally open contact) (power supply for center and rear sockets)
