Mercedes-Benz S-Class, CL-Class (W221, C216) (2005-2013) Fuse Diagram

Fuse box diagram (fuse layout), location, and assignment of fuses and relays Mercedes-Benz S-Class (W221) and CL-Class (C216) (250, 280, 300, 320, 350, 400, 420, 450, 500, 550, 600, 63, 65) (2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013).

Mercedes-Benz S-Class (W221) (2005-2013)

Mercedes-Benz CL-Class (C216) (2005-2013)

Checking and Replacing Fuses

The fuses in your vehicle serve to close down faulty circuits. If a fuse blows, all the components on the circuit and their functions stop operating. If a fuse has blown, the inside element will be melted. Blown fuses must be replaced with fuses of the same rating, which you can recognize by the color and value. The fuse ratings are listed in the fuse allocation chart (is in the vehicle document wallet).

If a newly inserted fuse also blows, have the cause traced and rectified at a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.

Notice

  • Before changing a fuse, secure the vehicle against rolling away and switch off all electrical consumers.
  • Always disconnect the battery before servicing high current fuses.
  • Always replace faulty fuses with the specified new fuses having the correct amperage. If you manipulate or bridge a faulty fuse or if you replace it with a fuse with a higher amperage, the electric cables could be overloaded. This could result in a fire. There is a risk of an accident and injury.
  • Only use fuses that have been approved for Mercedes-Benz vehicles and which have the correct fuse rating for the system concerned. Otherwise, components or systems could be damaged.

Left Instrument Panel Fuse Box

Left Instrument Panel Fuse Box Location

Do not use a pointed object such as a screwdriver to open the cover in the dashboard. You could damage the dashboard or the cover.

  • To open: pull cover (1) outwards in the direction of the arrow and remove it.
  • To close: clip in cover (1) on the front of the dashboard.
  • Fold cover (1) inwards until it engages.

Left Instrument Panel Fuse Box Diagram

Fused functionA
92Left front seat control unit40
93Restraint systems control unit7.5
USA version: Weight Sensing System (WSS) control unit
94from 2009: Multifunction camera5
95--
96Tire pressure monitor [RDK] control unit5
97W221: Audio/video controller control unit (rear entertainment system)7.5
98Rear entertainment system: DVD player (from 2009)7.5
99from 2009:7.5
   COMAND display
   SPLITVIEW display
100from 2009: Media interface control unit5
101Rear entertainment system:10
   Left rear display
   Right rear display
102Right front seat control unit40
103ESP control unit7.5
104Audio tuner control unit40
105--
106Japanese version: Electronic toll collection (ETC) control unit1
Valid for South Korea as of 1.9.10: TV/tuner connector
Valid for navigation; from 2009: Navigation processor
107SDAR control unit (SIRIUS satellite radio) (W221 from 2009)5
Digital radio: Digital Audio Broadcasting control unit
HD radio: High definition tuner control unit
108W221: Rear air conditioning control unit5
109W221: Rear blower intermediate connector15
110W221:7.5
   Left rear multicontour backrest control unit
   Right rear multicontour backrest control unit
111Rear multicontour seat or rear entertainment system (model 221): RCP [HBF] control unit5
112W221; up 2008:5
   Left front door control unit
   Right front door control unit
S 400 Hybrid: Front SAM control unit with fuse and relay module
113S 400 Hybrid: DC/DC converter control unit5

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Right Instrument Panel Fuse Box

Right Instrument Panel Fuse Box Diagram

Do not use a pointed object such as a screwdriver to open the cover in the dashboard. You could damage the dashboard or the cover.

  • To open: pull cover (1) outwards in the direction of the arrow and remove it.
  • To close: clip in cover (1) on the front of the dashboard.
  • Fold cover (1) inwards until it engages.

Right Instrument Panel Fuse Box Diagram

Fused functionA
70C216: Right door control unit40
W221: Right front door control unit
71Keyless Go control unit15
72S 400 Hybrid: Pyrotechnical separator7.5
73Japanese version: COMAND controller unit5
TELE AID emergency call system (from 2009): Emergency call system control unit
74TLC [HDS] control unit (Remote trunk closing)30
75S 400 Hybrid:10
   Battery management system control unit
   Power electronics control unit
76S 400 Hybrid: Vacuum pump relay (+)15
Valid for model 221 with engine 642.8: AdBlue relay supply-
77Advanced sound system: Sound amplifier (from 2009)50
78S 65 AMG with engine 275:25
   Additional fan relay (from 2009)
Valid for model 221 with engine 642.8:
   AdBlue relay supply (from 2009)
S 400 Hybrid, CL 63 AMG with engine 157, 278:15
   Charge air cooler circulation pump (from 2009)
79Alarm signal horn with additional battery7.5
80C216: Left door control unit40
W221: Left front door control unit
81C216: Rear control unit30
W221: Left rear door control unit40
82C216: Rear control unit30
W221: Left rear door control unit40
83Intelligent servo module for DIRECT SELECT30
84Advanced sound system: Digital sound processor (from 2009)20
85Valid for AMG: Illuminated door sill moldings (from 2009)10
86--
87--
88--
89--
90Stationary heater:20
   STH heater unit (model 216)
   STH or HB heater unit (model 221)
91Stationary heater:5
   STH radio remote control receiver
S 400 Hybrid:
   Front SAM control unit with fuse and relay module

Engine Compartment Fuse Box

It is on the left-hand side of the vehicle, when viewed in the direction of travel.

Engine Compartment Fuse Box Location

  • Remove any existing moisture from the fuse box using a dry cloth.
  • AMG vehicles: remove the control unit above the fuse box.
  • To open: undo screws (1) with an Allen key.
  • Remove bracket (3).
  • Remove cover (2).
  • To close: check whether the rubber seal is lying correctly in cover (2).
  • Put cover (2) back in position.
  • Replace bracket (3).
  • Tighten screws (1) using an Allen key.

Engine Compartment Fuse Box Diagram

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Fused functionA
20Valid for engine 629, 642, 651:10
   CDI control unit
Valid for engines 156, 157, 272, 273, 275, 276, 278:
   ME-SFI [ME] control unit
21Valid for engines 156, 157, 272, 273, 275, 276, 278:20
   Terminal 87 M1 i connector sleeve
Valid for model 221 with engine 629 and engine 642:
   CDI control unit
   Fuel pump relay
Valid for model 221 with engine 651:
   Quantity control valve
22Valid for engines 156, 157, 272, 273, 276, 278:15
   Terminal 87 connector sleeve
23up 2008:20
   Terminal 87 connector sleeve
   Valid for engine 275 (model 216):
      Terminal 87 M1 i connector sleeve
   Valid for engine 273 (model 216):
      Terminal 87 M2e connector sleeve
   Valid for engine 272, 273 (model 221):
      Terminal 87M2i connector sleeve
   Valid for engine 642:
      Terminal 87 connector sleeve
from 2009:
   Valid for engine 156, 157, 272, 273, 275, 276, 278:
      Terminal 87 connector sleeve
   Valid for model 221 with engine 629 and engine 642:
      Terminal 87 connector sleeve
   Valid for engine 156, 157, 272, 273, 276, 278:
      Terminal 87M2e connector sleeve
   Valid for engine 275:
      Terminal 87 M2i connector sleeve
   Valid for model 221 with engine 629 and engine 642:
      Terminal 87 connector sleeve
   Valid for model 221 with engine 651:
      Rear SAM control unit with fuse and relay module
24Valid for engines 157, 272, 273, 276, 278:25
   Terminal 87M1e connector sleeve
Valid for engine 642:
   CDI control unit
25Instrument cluster7.5
26Left front lamp unit10
27Right front lamp unit10
28Valid for engine 275:7.5
   EGS control unit
Valid without engine 275:
   Fully integrated transmission control (VGS) control unit
29Rear SAM control unit with fuse and relay module5
30Valid for engine 629, 642, 651:7.5
   CDI control unit
Valid for engines 156, 157, 272, 273, 275, 276, 278:
   ME-SFI [ME] control unit
   Fuel pump control unit
31S 400 Hybrid: Electric refrigerant compressor5
32Valid for model with ECO start/stop function:15
   Transmission oil auxiliary pump control unit
S 400 Hybrid:
   Transmission oil auxiliary pump control unit
33Valid as of 1.9.10 without model S 400 Hybrid:5
   ESP control unit
S 400 Hybrid:
   Battery management system control unit
   DC/DC converter control unit
   Power electronics control unit
34S 400 Hybrid: Regenerative braking system control unit5
35Electric parking brake controller unit5
36Data link connector (Pin 16)10
37For EIS control unit7.5
38Central gateway control unit7.5
39Instrument cluster7.5
40Upper control panel control unit7.5
41Slave wiper motor30
42Master wiper motor30
43Front cigar lighter with ashtray illumination15
44--
45S 400 Hybrid: Power electronics circulation pump 15
46W221 with Active Body Control (ABC), model 216: ABC control unit15
W221 without Active Body Contro (ABC): AIRmatic with ADS control unit
47Front SAM control unit with fuse and relay module15
Steering column up/down motor
48up 2008: Front SAM control unit with fuse and relay module15
from 2009: Steering column in/out motor
49Steering column module10
50AAC [KLA] control unit15
51up 2008: COMAND display7.5
from 2009:5
   COMAND display
   SPLITVIEW display
52 AW221: 15
   Left fanfare horn
   Right fanfare horn
52 BW221, C216: 15
   Left fanfare horn
   Right fanfare horn
53--
54AC air recirculation unit40
55Valid for gasoline engine: Electric air pump60
56W221 without Active Body Contro (ABC): AIRmatic compressor unit40
57up 2008: Wiper park position heater40
from 2009: Wiper park position heater30
60from 2009: Electrohydraulic power steering5
61C216; W221 - from 2009: Restraint systems control unit7.5
W221; up 2008: Restraint systems control unit10
62Night View Assist control unit5
63Valid for model 221 with engine 629 and engine 642 as of 1.9.08: Fuel filter condensation sensor with heating element15
64W221 as of 1.9.06:7.5
   Driver NECK-PRO head restraint solenoid
   Front passenger NECK-PRO head restraint solenoid
W221 as of '09:10
   Driver NECK-PRO head restraint solenoid
   Front passenger NECK-PRO head restraint solenoid
65Valid as of 1.6.09: 12 Volt connector in glove box15
66DTR controller unit (Distronic or Distronic Plus)7.5
Relay
AAir pump relay
BAir suspension compressor relay
CTerminal 87 relay, engine
DTerminal 15 relay
ETerminal 87 relay, chassis
FFanfare horn relay
GTerminal 15R relay
HCircuit 50 relay, starter
JCircuit 15 relay, starter
KWiper park heater relay

Rear Fuse Box

The fuse box is behind the armrest in the rear.

Rear Fuse Box Location

To open: Swing down center armrest. Open cover behind the center armrest. Pull cover 1 forward in direction of the arrow.
To close: Press cover 1 backward and engage.

Rear Fuse Box Diagram

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Fused functionA
115Heated rear window50
116Valid for engine 157, 275, 278: Charge air cooler circulation pump10
Valid for engine 156: Engine coolant circulation pump
S 400 Hybrid: Power electronics circulation pump 2
117Rear cigar lighter15
118Valid for engine 272, 273, 642: Fuel pump (up 2008)30
Valid for model 221 with engine 629, 642: Fuel pump (from 2009)
S 400 Hybrid: Power electronics circulation pump 115
Valid for model 642.8 and engine 651 as of 1.6.11: Refrigerant compressor with magnetic
119Front central operating unit7.5
120--
121Audio tuner control unit10
122COMAND controller unit7.5
123W221: Right front reversible emergency tensioning retractor40
124W221: Left front reversible emergency tensioning retractor40
125up 31.5.09: Voice control system (VCS) control unit5
126Overhead control panel control unit25
127Lumbar pump (from 2009)30
Multicontour seat pneumatic pump (Left/right front multicontour seats)
Pneumatic pump for dynamic seat control (Left and right dynamic multicontour seat)
128Valid for engine 275 (up 2008): Fuel pump control unit25
Valid for engine 156, 157, 272, 273, 275, 276, 278, 642 (from 2009): Fuel pump control unit
129up 2008: Overhead control panel control unit (Power glass tilting/sliding roof)25
from 2009: UPCI (Universal Portable Cell Phone Interface) control unit
130Electric parking brake controller unit30
131Rear window antenna amplifier module7.5
133Trailer recognition control unit15
Reversing camera (as of 1.9.10)
134Luggage compartment socket15
135Park Assist; up 2008:7.5
   Radar sensors control unit (SGR)
   Front short range radar sensor unit
   Rear short range radar sensor unit
DISTRONIC PLUS up to 31.8.10 or Blind Spot Assist or Adaptive cruise control Plus Light: Radar sensors control unit (SGR) (from 2009)
PARKTRONIC or Exclusive parking assist: PTS control unit
136Valid for model 221 with engine 642.8: AdBlue control unit7.5
137Reversing camera (as of 1.9.10)7.5
138Navigation processor (from 2009) (up to 31.8.10)5
Emergency call system control unit (from 2009)
Japanese version: TV/tuner connector (from 2009)
139Rear backrest refrigerator box15
140Rear cigar lighter with ashtray illumination connector15
115 V socket (from 2009)
141Reversing camera control unit5
142Parktronic system (PTS) control unit7.5
Distronic Plus: Radar sensors control unit (SGR)
Valid as of 1.9.10 for DISTRONIC PLUS and Active Blind Spot Assist or Active Lane Keeping Assist:
   Video and radar sensor system control unit
143Rear seats control unit25
144Rear seats control unit25
145Trailer recognition control unit (up 2008)20
Trailer hitch socket (13-pin) (from 2009)
146Trailer recognition control unit25
147up 2008: TLC [HDS] control unit (Remote trunk closing)30
148up 2008: Universal Portable CTEL Interface (UPCI [UHI]) control unit7.5
from 2009: Panoramic sliding sunroof circuit 30 connector sleeve25
149up 2008: Voice control system (VCS [SBS]) control unit5
from 2009: Panoramic sliding sunroof control module25
150TV combination tuner (analog/digital)7.5
Japanese version: TV/tuner connector (from 2009)
151W221; up 2008: Electric parking brake controller unit25
W221; from 2009: Trailer recognition control unit20
152W221: Rear window antenna amplifier module7.5
115 V socket: DC/AC converter control unit25
Relay
MTerminal 15 relay
NTerminal 15R relay
OPower outlet relay
PHeated rear window relay
QValid for engine 156, 157, 275, 278, 629: Circulation pump relay
S 400 Hybrid: Valid for model 221.095/195: Power electronics circulation pump relay 2
RCigar lighter relay
SFuel pump relay
Valid for engine 642.8 and engine 651 as of 1.6.11: Connected through the fuel pump: Refrigerant compressor magnetic clutch
S 400 Hybrid: Power electronics circulation pump relay 1

Interior prefuse box

Interior prefuse box location

up 2008
Fused functionA
1Starter400
2Not valid for engine 642:150
   Alternator200
Valid for engine 642:
   Alternator
3-150
4AAC with integrated control additional fan motor150
5Valid for engine 642: PTC heater booster200
6Front SAM control unit with fuse and relay module200
7ESP control unit40
8ESP control unit25
9Front SAM control unit with fuse and relay module20
10Vehicle power supply control unit7.5
from 2009

Interior prefuse box (from 2009)

Fused functionA
3Rear SAM control unit with fuse and relay module150
4ECO start/stop function:150
   ECO start/stop function relay
S 400 Hybrid:
   DC/DC converter control unit
Heated windshield:
   Heated windshield control unit
5Valid for model 221 (Electrical preinstallation for rental vehicle):Special vehicle multifunction control unit (SVMCU [MSS])125
S 400 Hybrid: Vacuum pump40
6Right dashboard fuse box80
7Valid for model 221 with engine 629, 642, 651:150
   PTC heater booster
Valid for model 221 (Electrical preinstallation for rental vehicle):
   Special vehicle multifunction control unit (SVMCU [MSS])
8Front SAM control unit with fuse and relay module80
9Left dashboard fuse box80
10Rear SAM control unit with fuse and relay module150

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Engine compartment prefuse box

Engine compartment prefuse box location

  • Remove any existing moisture from the fuse box using a dry cloth.
  • To open: open clamps (2).
  • Remove cover (2) upwards.
  • To close: check whether the rubber seal is lying correctly in cover (2).
  • Put cover (2) back in position.
  • Fold-down cover (1) and close clamps (2).

Engine compartment prefuse box location

up 2008
Fused functionA
1Front prefuse box
(via on-board electrical network line pyrofuse
2Heated windshield control unit125
3Right instrument panel fuse box80
4Rear SAM control unit with fuse and relay module200
5Special vehicle multifunction control unit (SVMCU [MSS])100
6Rear SAM control unit with fuse and relay module150
7Front SAM control unit with fuse and relay module100
8Left instrument panel fuse box80
9Front SAM control unit with fuse and relay module5
10C216: Emergency call system control unit5
from 2009

Engine compartment prefuse box (from 2009)

Fused functionA
2Alternator400
3Electrohydraulic power steering150
Valid for model 221 with engine 629, 642:
   Glow time output stage
4Interior prefuse box ( unfused)-
5AAC with integrated control additional fan motor100
6Front SAM control unit with fuse and relay module150
7ESP control unit40
S 400 Hybrid: Regenerative braking system control unit
8ESP control unit25
S 400 Hybrid: Regenerative braking system control unit
9Front SAM control unit with fuse and relay module25
10Spare-

AdBlue fuse block

AdBlue fuse block location

AdBlue fuse block

Fused functionA
AAdBlue control unit7.5
BHeater circuit 120
CHeater circuit 220
DSpare-