2005-2013 Mercedes-Benz W221 and C216 Fuse Box Diagram
Fuse and relay box in rear
Opening: Swing down center armrest.
Open cover behind center armrest.
Pull cover 1 forward in direction of arrow.
Closing: Press cover 1 backward and engage
| No. | A | Description |
|---|---|---|
| 115 | 50 | Heated rear window |
| 116 | 10 | M157, M275, M278: Charge air cooler circulation pump
M156: Engine coolant circulation pump S 400 Hybrid: Power electronics circulation pump 2 |
| 117 | 15 | Rear cigar lighter |
| 118 | 30 | M272, M273, OM642: Fuel pump (→2008)
W221 with OM629, OM642: Fuel pump (2009→) |
| 15 | S 400 Hybrid: Power electronics circulation pump 1
OM642.8 and OM651 (01.06.2011→): Refrigerant compressor with magnetic |
|
| 119 | 7.5 | Front central operating unit |
| 120 | - | - |
| 121 | 10 | Audio tuner control unit |
| 122 | 7.5 | COMAND controller unit |
| 123 | 40 | W221: Right front reversible emergency tensioning retractor |
| 124 | 40 | W221: Left front reversible emergency tensioning retractor |
| 125 | 5 | →31.05.2009: Voice control system (VCS) control unit |
| 126 | 25 | Overhead control panel control unit |
| 127 | 30 | Lumbar pump (2009→)
Multicontour seat pneumatic pump (Left/right front multicontour seats) Pneumatic pump for dynamic seat control (Left and right dynamic multicontour seat) |
| 128 | 25 | M275 (→2008): Fuel pump control unit
M156, M157, M272, M273, M275, M276, M278, OM642 (2009→): Fuel pump control unit |
| 129 | 25 | →2008: Overhead control panel control unit (Power glass tilting/sliding roof)
2009→: UPCI (Universal Portable Cell Phone Interface) control unit |
| 130 | 30 | Electric parking brake controller unit |
| 131 | 7.5 | Rear window antenna amplifier module |
| 133 | 15 | Trailer recognition control unit
Reversing camera (01.09.2010→) |
| 134 | 15 | Luggage compartment socket |
| 135 | 7.5 | Park Assist (→2008):
Radar sensors control unit (SGR) Front short range radar sensor unit Rear short range radar sensor unit DISTRONIC PLUS →31.08.2010 or Blind Spot Assist or Adaptive cruise control Plus Light: Radar sensors control unit (SGR) (2009→) PARKTRONIC or Exclusive parking assist: PTS control unit |
| 136 | 7.5 | W221 with OM642.8: AdBlue® control unit |
| 137 | 7.5 | Reversing camera (01.09.2010→) |
| 138 | 5 | Navigation processor (2009-31.08.2010)
Emergency call system control unit (2009→) Japan: TV/tuner connector (2009→) |
| 139 | 15 | Rear backrest refrigerator box |
| 140 | 15 | Rear cigar lighter with ashtray illumination connector
115 V socket (2009→) |
| 141 | 5 | Reversing camera control unit |
| 142 | 7.5 | Parktronic system (PTS) control unit
Distronic Plus: Radar sensors control unit (SGR) 01.09.2010→ for DISTRONIC PLUS and Active Blind Spot Assist or Active Lane Keeping Assist: Video and radar sensor system control unit |
| 143 | 25 | Rear seats control unit |
| 144 | 25 | Rear seats control unit |
| 145 | 20 | Trailer recognition control unit (→2008)
Trailer hitch socket (13-pin) (2009→) |
| 146 | 25 | Trailer recognition control unit |
| 147 | 30 | →2008: TLC [HDS] control unit (Remote trunk closing) |
| 148 | 7.5 | →2008: Universal Portable CTEL Interface (UPCI [UHI]) control unit |
| 25 | 2009→: Panoramic sliding sunroof circuit 30 connector sleeve | |
| 149 | 5 | →2008: Voice control system (VCS [SBS]) control unit |
| 25 | 2009→: Panoramic sliding sunroof control module | |
| 150 | 7.5 | TV combination tuner (analog/digital)
Japan: TV/tuner connector (2009→) |
| 151 | 25 | W221; →2008: Electric parking brake controller unit |
| 20 | W221; 2009→: Trailer recognition control unit | |
| 152 | 7.5 | W221: Rear window antenna amplifier module |
| 25 | 115 V socket: DC/AC converter control unit | |
| Relay | ||
| M | Terminal 15 | |
| N | Terminal 15R | |
| O | Power outlet | |
| P | Heated rear window | |
| Q | M156, M157, M275, M278, OM629: Circulation pump
S 400 Hybrid: W221.095/195: Power electronics circulation pump 2 |
|
| R | Cigar lighter | |
| S | Fuel pump
OM642.8 and engine OM651 (01.06.2011→): Connected through the fuel pump: Refrigerant compressor magnetic clutch S 400 Hybrid: Power electronics circulation pump relay 1 |
|
Gasoline:
- 3.0L - M272 (S300)
- 3.5L - M272 (S350, S350 BlueEFFICIENCY, S400 Hybrid)
- 4.7L - M273 (S450)
- 5.5L - M273 (S500 / S550)
- 5.5L - M157 (S63 AMG)
- 5.5L - M275 (S600)
- 6.0L - M275 (S65 AMG)
- 6.2L - M156 (S63 AMG)
Diesel:
- 2.2L - OM651 (S250 CDI BlueEFFICIENCY)
- 3.0L - OM642 (S320 CDI, S320 CDI BlueEFFICIENCY, S350 CDI BlueEFFICIENCY, S350 BlueTEC)
- 4.0L - OM629 (S420 CDI, S450 CDI)
CL-Class (C216)
- 4.7L - M276 (CL 500)
- 5.5L - M273 (CL 500)
- 5.5L - M157 (CL 63 AMG)
- 5.5L - M275 (CL 600)
- 6.0L - M275 (CL 65 AMG)
- 6.2L - M156 (CL 63 AMG)
Fuse box in the engine compartment
| No. | A | Description |
|---|---|---|
| 20 | 10 | OM629, OM642, OM651:
CDI control unit M156, M157, M272, M273, M275, M276, M278: ME-SFI [ME] control unit |
| 21 | 20 | M156, M157, M272, M273, M275, M276, M278:
Terminal 87 M1 i connector sleeve W221 with OM629 and engine OM642: CDI control unit Fuel pump relay W221 with OM651: Quantity control valve |
| 22 | 15 | M156, M157, M272, M273, M276, M278:
Terminal 87 connector sleeve |
| 23 | 20 | →2008:
Terminal 87 connector sleeve M275 (C216): Terminal 87 M1 i connector sleeve M273 (C216): Terminal 87 M2e connector sleeve M272, M273 (W221): Terminal 87M2i connector sleeve OM642: Terminal 87 connector sleeve 2009→: M156, M157, M272, M273, M275, M276, M278: Terminal 87 connector sleeve W221 with OM629 and engine OM642: Terminal 87 connector sleeve M156, M157, M272, M273, M276, M278: Terminal 87M2e connector sleeve M275: Terminal 87 M2i connector sleeve W221 with OM629 and engine OM642: Terminal 87 connector sleeve W221 with OM651: Rear SAM control unit with fuse and relay module |
| 24 | 25 | M157, M272, M273, M276, M278:
Terminal 87M1e connector sleeve OM642: CDI control unit |
| 25 | 7.5 | Instrument cluster |
| 26 | 10 | Left front lamp unit |
| 27 | 10 | Right front lamp unit |
| 28 | 7.5 | M275:
EGS control unit except M275: Fully integrated transmission control (VGS) control unit |
| 29 | 5 | Rear SAM control unit with fuse and relay module |
| 30 | 7.5 | OM629, OM642, OM651:
CDI control unit M156, M157, M272, M273, M275, M276, M278: ME-SFI [ME] control unit Fuel pump control unit |
| 31 | 5 | S 400 Hybrid: Electric refrigerant compressor |
| 32 | 15 | ECO start/stop function:
Transmission oil auxiliary pump control unit S 400 Hybrid: Transmission oil auxiliary pump control unit |
| 33 | 5 | 01.09.2010→ (except S 400 Hybrid):
ESP control unit S 400 Hybrid: Battery management system control unit DC/DC converter control unit Power electronics control unit |
| 34 | 5 | S 400 Hybrid: Regenerative braking system control unit |
| 35 | 5 | Electric parking brake controller unit |
| 36 | 10 | Data link connector (Pin 16) |
| 37 | 7.5 | For EIS control unit |
| 38 | 7.5 | Central gateway control unit |
| 39 | 7.5 | Instrument cluster |
| 40 | 7.5 | Upper control panel control unit |
| 41 | 30 | Slave wiper motor |
| 42 | 30 | Master wiper motor |
| 43 | 15 | Front cigar lighter with ashtray illumination |
| 44 | - | - |
| 45 | 5 | S 400 Hybrid: Power electronics circulation pump 1 |
| 46 | 15 | W221 with Active Body Control (ABC), C216: ABC control unit
W221 without Active Body Contro (ABC): AIRmatic with ADS control unit |
| 47 | 15 | Front SAM control unit with fuse and relay module
Steering column up/down motor |
| 48 | 15 | →2008: Front SAM control unit with fuse and relay module
2009→: Steering column in/out motor |
| 49 | 10 | Steering column module |
| 50 | 15 | AAC [KLA] control unit |
| 51 | 7.5 | →2008: COMAND display |
| 5 | 2009→:
COMAND display SPLITVIEW display |
|
| 52A | 15 | W221:
Left fanfare horn Right fanfare horn |
| 52B | 15 | W221, C216:
Left fanfare horn Right fanfare horn |
| 53 | - | - |
| 54 | 40 | AC air recirculation unit |
| 55 | 60 | Gasoline: Electric air pump |
| 56 | 40 | W221 without Active Body Contro (ABC): AIRmatic compressor unit |
| 57 | 40 | →2008: Wiper park position heater |
| 30 | 2009→: Wiper park position heater | |
| 60 | 5 | 2009→: Electrohydraulic power steering |
| 61 | 7.5 | C216; W221 (2009→): Restraint systems control unit |
| 10 | W221 (→2008): Restraint systems control unit | |
| 62 | 5 | Night View Assist control unit |
| 63 | 15 | W221 with OM629 OM642 (01.09.2008→): Fuel filter condensation sensor with heating element |
| 64 | 7.5 | W221 (01.09.2006→):
Driver NECK-PRO head restraint solenoid Front passenger NECK-PRO head restraint solenoid |
| 10 | W221 (2009→):
Driver NECK-PRO head restraint solenoid Front passenger NECK-PRO head restraint solenoid |
|
| 65 | 15 | 01.06.2009→: 12 Volt connector in glove box |
| 66 | 7.5 | DTR controller unit (Distronic or Distronic Plus) |
| Relay | ||
| A | Air pump | |
| B | Air suspension compressor | |
| C | Terminal 87 (engine) | |
| D | Terminal 15 | |
| E | Terminal 87 (chassis) | |
| F | Fanfare horn | |
| G | Terminal 15R | |
| H | Circuit 50, (starter) | |
| J | Circuit 15, (starter) | |
| K | Wiper park heater | |
Left instrument panel fuse box
| No. | A | Description |
|---|---|---|
| 92 | 40 | Left front seat control unit |
| 93 | 7.5 | Restraint systems control unit
USA: Weight Sensing System (WSS) control unit |
| 94 | 5 | 2009→: Multifunction camera |
| 95 | - | - |
| 96 | 5 | Tire pressure monitor [RDK] control unit |
| 97 | 7.5 | W221: Audio/video controller control unit (rear entertainment system) |
| 98 | 7.5 | Rear entertainment system: DVD player (2009→) |
| 99 | 7.5 | 2009→:
COMAND display SPLITVIEW display |
| 100 | 5 | 2009→: Media interface control unit |
| 101 | 10 | Rear entertainment system:
Left rear display Right rear display |
| 102 | 40 | Right front seat control unit |
| 103 | 7.5 | ESP control unit |
| 104 | 40 | Audio tuner control unit |
| 105 | - | - |
| 106 | 1 | Japan: Electronic toll collection (ETC) control unit
South Korea (01.09.2010→): TV/tuner connector Valid for navigation (2009→): Navigation processor |
| 107 | 5 | SDAR control unit (SIRIUS satellite radio) (W221 2009→)
Digital radio: Digital Audio Broadcasting control unit HD radio: High definition tuner control unit |
| 108 | 5 | W221: Rear air conditioning control unit |
| 109 | 15 | W221: Rear blower intermediate connector |
| 110 | 7.5 | W221:
Left rear multicontour backrest control unit Right rear multicontour backrest control unit |
| 111 | 5 | Rear multicontour seat or rear entertainment system (W221): RCP [HBF] control unit |
| 112 | 5 | W221 (→2008):
Left front door control unit Right front door control unit S 400 Hybrid: Front SAM control unit with fuse and relay module |
| 113 | 5 | S 400 Hybrid: DC/DC converter control unit |
Right instrument panel fuse box
| No. | A | Description |
|---|---|---|
| 70 | 40 | C216: Right door control unit
W221: Right front door control unit |
| 71 | 15 | Keyless Go control unit |
| 72 | 7.5 | S 400 Hybrid: Pyrotechnical separator |
| 73 | 5 | Japan: COMAND controller unit
TELE AID emergency call system (2009→): Emergency call system control unit |
| 74 | 30 | TLC [HDS] control unit (Remote trunk closing) |
| 75 | 10 | S 400 Hybrid:
Battery management system control unit Power electronics control unit |
| 76 | 15 | S 400 Hybrid: Vacuum pump relay (+) |
| - | W221 with OM642.8: AdBlue® relay supply | |
| 77 | 50 | Advanced sound system: Sound amplifier (2009→) |
| 78 | 25 | S 65 AMG with M275:
Additional fan relay (2009→) W221 with OM642.8: AdBlue® relay supply (2009→) |
| 15 | S 400 Hybrid, CL 63 AMG with M157, M278:
Charge air cooler circulation pump (2009→) |
|
| 79 | 7.5 | Alarm signal horn with additional battery |
| 80 | 40 | C216: Left door control unit
W221: Left front door control unit |
| 81 | 30 | C216: Rear control unit |
| 40 | W221: Left rear door control unit | |
| 82 | 30 | C216: Rear control unit |
| 40 | W221: Left rear door control unit | |
| 83 | 30 | Intelligent servo module for DIRECT SELECT |
| 84 | 20 | Advanced sound system: Digital sound processor (2009→) |
| 85 | 10 | AMG: Illuminated door sill moldings (2009→) |
| 86 | - | - |
| 87 | - | - |
| 88 | - | - |
| 89 | - | - |
| 90 | 20 | Stationary heater:
STH heater unit (C216) STH or HB heater unit (W221) |
| 91 | 5 | Stationary heater:
STH radio remote control receiver S 400 Hybrid: Front SAM control unit with fuse and relay module |
Interior prefuse box (→2008)
| No. | A | Description |
|---|---|---|
| 1 | 400 | Starter |
| 2 | 150
200 |
except OM642:
Alternator OM642: Alternator |
| 3 | 150 | - |
| 4 | 150 | AAC with integrated control additional fan motor |
| 5 | 200 | OM642: PTC heater booster |
| 6 | 200 | Front SAM control unit with fuse and relay module |
| 7 | 40 | ESP control unit |
| 8 | 25 | ESP control unit |
| 9 | 20 | Front SAM control unit with fuse and relay module |
| 10 | 7.5 | Vehicle power supply control unit |
Interior prefuse box (2009→)
| No. | A | Description |
|---|---|---|
| 3 | 150 | Rear SAM control unit with fuse and relay module |
| 4 | 150 | ECO start/stop function:
ECO start/stop function relay S 400 Hybrid: DC/DC converter control unit Heated windshield: Heated windshield control unit |
| 5 | 125 | W221 (Electrical preinstallation for rental vehicle):Special vehicle multifunction control unit (SVMCU [MSS]) |
| 40 | S 400 Hybrid: Vacuum pump | |
| 6 | 80 | Right dashboard fuse box |
| 7 | 150 | W221 with OM629, OM642, OM651:
PTC heater booster W221 (Electrical preinstallation for rental vehicle): Special vehicle multifunction control unit (SVMCU [MSS]) |
| 8 | 80 | Front SAM control unit with fuse and relay module |
| 9 | 80 | Left dashboard fuse box |
| 10 | 150 | Rear SAM control unit with fuse and relay module |
Engine compartment prefuse box (→2008)
| No. | A | Description |
|---|---|---|
| 1 | ' | Front prefuse box
(via on-board electrical network line pyrofuse |
| 2 | 125 | Heated windshield control unit |
| 3 | 80 | Right instrument panel fuse box |
| 4 | 200 | Rear SAM control unit with fuse and relay module |
| 5 | 100 | Special vehicle multifunction control unit (SVMCU [MSS]) |
| 6 | 150 | Rear SAM control unit with fuse and relay module |
| 7 | 100 | Front SAM control unit with fuse and relay module |
| 8 | 80 | Left instrument panel fuse box |
| 9 | 5 | Front SAM control unit with fuse and relay module |
| 10 | 5 | C216: Emergency call system control unit |
Engine compartment prefuse box (2009→)
| No. | A | Description |
|---|---|---|
| 2 | 400 | Alternator |
| 3 | 150 | Electrohydraulic power steering
W221 with OM629, OM642: Glow time output stage |
| 4 | - | Interior prefuse box ( unfused) |
| 5 | 100 | AAC with integrated control additional fan motor |
| 6 | 150 | Front SAM control unit with fuse and relay module |
| 7 | 40 | ESP control unit
S 400 Hybrid: Regenerative braking system control unit |
| 8 | 25 | ESP control unit
S 400 Hybrid: Regenerative braking system control unit |
| 9 | 25 | Front SAM control unit with fuse and relay module |
| 10 | - | - |
AdBlue fuse block
| No. | A | Description |
|---|---|---|
| A | 7.5 | AdBlue® control unit |
| B | 20 | Heater circuit 1 |
| C | 20 | Heater circuit 2 |
| D | - | - |