Mercedes-Benz SLK-Class (R172) (2010-2018) Fuse Diagram

Fuse box diagram (fuse layout), location, and assignment of fuses and relays Mercedes-Benz SLK-Class (R172) (SLK180, SLK200, SLK250, SLK300, SLK350 & SLK55 AMG) (2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018).

Mercedes-Benz SLK-Class (R172) (2010-2018)

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 (it is located in the vehicle tool kit in the stowage compartment under the trunk floor).

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.

Location

Location

  • F32 / F32/5 – Front prefuse box
  • N10/1 – Front SAM control unit with fuse and relay module
  • N10/2 – Rear SAM control unit with fuse and relay module

Engine Compartment Fuse Box

The fuse block is located in the engine compartment on the left-hand side of the vehicle, when viewed in the direction of travel.

Engine Compartment Fuse Box Location

  • Open the hood.
  • Use a dry cloth to remove any moisture from the fuse box.
  • To open: open clamp (1)
  • Remove fuse box cover (2) forwards.
  • To close: check whether the seal is seated correctly in cover (2)
  • Insert cover (2) at the rear of the fuse box into the retainer.
  • Fold-down cover (2) and close clamps (1)
  • Close the hood.

Engine Compartment Fuse Box Diagram

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Fused functionA
1Electronic Stability Program control unit25
2Vario roof control control unit30
3Vario roof control control unit30
4Headlamp control unit (up to model year 2017)20
Valid for diesel engine: Fuel filter condensation sensor with heating element (up to model year 2017)
5Rear SAM control unit with fuse and relay module7.5
Electrohydraulic power steering via engine compartment/FFS electrical connector (as of model year 2017)
Exterior lights switch (as of model year 2017)
6Valid for diesel engine: CDI control unit10
Valid for gasoline engine: ME-SFI control unit
7Starter via starter circuit 50 relay20
8Supplemental Restraint System control unit7.5
9Vehicle interior socket, front15
Cigarette lighter with ashtray illumination
10Wiper motor30
Wiper park position heater (up to model year 2017)
11Audio/COMAND display7.5
Audio/COMAND control panel
12ACC control and operating unit7.5
Overhead control panel control unit
Steering column tube module control unit (as of model year 2017)
13Steering column tube module control unit7.5
Multifunction camera
14Electronic Stability Program control unit7.5
15Supplemental Restraint System control unit7.5
16Radio fan electrical connector (as of model year 2017)5
Valid with transmission 725: DIRECT SELECT INTERFACE (as of model year 2017)
Navigation module electrical connector (up to model year 2017)
16Valid for transmission 722: Electronic selector lever module control unit7.5
Valid with transmission 725: DIRECT SELECT INTERFACE
17Left front lamp unit and right front lamp unit30
Valid up to 31.05.2012: Overhead control panel control unit7.5
18Upper control panel control unit7.5
Overhead control panel control unit
Backup relay (up to model year 2017)
19Valid with transmission 725: Electronic ignition lock control unit20
Valid for manual transmission:
   Electronic ignition lock control unit
   Electric steering lock control unit
20Electronic Stability Program control unit40
21Glove compartment lamp7.5
22Fan motor for internal combustion engine and air conditioning with integrated control (as of model year 2017)15
Valid for engine 152, 271, 274, 276, 651: Electrical connector for interior harness and engine wiring harness
Valid for engine 276, 651: Engine compartment/vehicle interior electrical connector
Valid for engine 152, 271, 276, 651: Circuit 87 M2e connector sleeve
Valid for engine 274: Connector sleeve, circuit 87/2
Valid for diesel engine:
   CDI control unit
   Engine compartment/FFS [RBA] electrical connector (up to model year 2017)
23Valid for engine 152, 271, 274, 276: Electrical connector for interior harness and engine wiring harness20
Valid for diesel engine:
  Quantity control valve
   Circuit 87 M1e connector sleeve (as of model year 2017)
Valid for engine 276: Engine compartment/vehicle interior electrical connector (up to model year 2017)
24Valid for engine 152, 271, 274, 276: Electrical connector for interior harness and engine wiring harness15
Valid for engine 274: Coolant circulation pump relay
Valid for diesel engine:
   Engine compartment/vehicle interior electrical connector
   CDI control unit (up to model year 2017)
China vehicles: Radiator shutters actuator (as of model year 2017)
25Valid for engine 276: Circuit 87 M4e connector sleeve15
Valid for engine 274: Circuit 87 M1 connector sleeve
Valid for engine 152: Circuit 87 connector sleeve
Valid for diesel engine: Oxygen sensor upstream of catalytic converter
Valid for engine 651: (as of 01.06.2015)
   NOx sensor control unit downstream of diesel particulate filter
   NOx sensor control unit downstream of SCR catalytic converter
26Left front lamp unit and right front lamp unit (as of model year 2017)20
Radio (up to model year 2017)
COMAND controller unit (up to model year 2017)
27Electronic ignition lock control unit7.5
Valid for diesel engine: CDI control unit
Valid for gasoline engine: ME-SFI control unit
28Instrument cluster7.5
Analog clock
29Right headlamp range adjustment actuator motor (as of model year 2017)10
Right front lamp unit (up to model year 2017)
30Left headlamp range adjustment actuator motor (as of model year 2017)10
Left front lamp unit (up to model year 2017)
31ALeft fanfare horn15
Right fanfare horn
31BLeft fanfare horn15
Right fanfare horn
32Valid for engine 274: Electric air pump (as of model year 2017)40
Valid for engine 651: AdBlue® control unit
33Valid for transmission 722: Fully integrated transmission control unit10
34Fuel system control unit7.5
Valid for engine 651: AdBlue® control unit
35Electronic Stability Program control unit5
Right outer rear bumper integrated radar sensor and left outer rear bumper integrated radar sensor (as of model year 2017)
36COLLISION PREVENTION ASSIST controller unit (as of model year 2017)7.5
DISTRONIC electric controller unit
Left front bumper DISTRONIC (DTR) sensor (up to model year 2017)
Right front bumper DISTRONIC (DTR) sensor (up to model year 2017)
Relay
JCircuit 15 relay
KCircuit 15R relay
LReserve relay
MStarter circuit 50 relay
NEngine circuit 87 relay
OHorn relay
PValid for engine 271, 274 or 651.9 as of 01.06.2015: Adblue®/secondary air injection relay
QValid up to 29.02.2016: Backup relay
RChassis circuit 87 relay

Front prefuse box

Front prefuse box

Fused functionA
150Spare-
151Fan motor for internal combustion engine and air conditioning with integrated control100
152Front SAM control unit with fuse and relay module150
153ECO start/stop: Front SAM control unit with fuse and relay module100
except ECO start/stop: Spare
ECO start/stop (as of model year 2017): Front SAM control unit with fuse and relay module60
154except ECO start/stop: Front SAM control unit with fuse and relay module100
ECO start/stop: Spare
155Spare-
156Spare-
157Valid as of 01.06.2015 Electrohydraulic power steering100
As of model year 2017: Electrohydraulic power steering120
158Blower regulator and blower motor50
As of model year 2017: Blower regulator and blower motor40
159Vario roof control control unit40
160Valid with transmission 725: Fully integrated transmission control controller unit60
161Front SAM control unit with fuse and relay module100
162Spare-
163Rear SAM control unit with fuse and relay module150
As of model year 2017: Rear SAM control unit with fuse and relay module200
164ECO start/stop: Supply via ECO start/stop function additional battery100
except ECO start/stop: Supply from on-board electrical system battery
As of model year 2017: Supply via ECO start/stop function additional battery200

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Luggage Compartment Fuse Box

The fuse box is located in the trunk behind the partition covering.

Luggage Compartment Fuse Box Location

  • Open the trunk lid.
  • To open: release cover (1) on the right and left-hand sides with a flat object.
  • Open the cover (1) downwards in the direction of the arrow.

Luggage Compartment Fuse Box Diagram

Fused functionA
37Driver seat NECK-PRO head restraint solenoid7.5
Front passenger seat NECK-PRO head restraint solenoid
38Spare-
39Left door control unit30
40Adaptive damping system control unit15
41Right door control unit30
42Fuel system control unit25
43Spare-
44Spare-
45Spare-
46FM, AM and CL [ZV] antenna amplifier7.5
FM 2, DAB and TV antenna amplifier (up to model year 2017)
Alarm siren
Interior protection sensor
47Spare-
48Spare-
49Rear window heater30
50Right reversible emergency tensioning retractor50
51Left reversible emergency tensioning retractor50
52Spare-
53Spare-
54Spare-
55Spare-
56Spare-
57Spare-
58Spare-
59Electric parking brake control unit5
60Spare-
61AIRSCARF control unit25
62Driver seat control unit30
63AIRSCARF control unit25
64Front passenger seat control unit30
65Valid for transmission 722, 725 (ECO start/stop) (up to model year 2017)10
Electric oil pump
66Spare-
67Sound system amplifier control unit40
68Engine sound control unit (as of model year 2017)15
69Radio (as of model year 2017)20
COMAND controller unit (as of model year 2017)
70Tire pressure monitor control unit5
71Valid for engine 274: Left exhaust flap actuator motor (as of model year 2017)7.5
72Center console stowage compartment socket (up to model year 2017)15
73Valid for engine 274, 276: Charge air cooler circulation pump relay (as of model year 2017)10
74KEYLESS-GO control unit7.5
75Vario roof control control unit20
76MAGIC SKY CONTROL control unit7.5
77Cellular telephone system antenna amplifier / compensator5
78Media interface control unit (up to model year 2017)7.5
79Multimedia connection unit (as of model year 2017)5
Radar sensors control unit (up to model year 2017)
80Parking system control unit7.5
81Mobile phone contact plate5
82Reversing camera (as of model year 2017)5
83Dedicated Short-Range Communications control unit (as of model year 2017)7.5
VICS and Electronic Toll Collection power supply electrical connector (up to model year 2017)
84Digital Audio Broadcasting control unit (up to model year 2017)5
Satellite digital audio radio (SDAR) control unit (up to model year 2017)
85Tuner unit (as of model year 2017)7.5
Digital TV tuner (up to model year 2017)
86Camera cover control unit (as of model year 2017)5
87HERMES control unit (as of model year 2017)7.5
eCall Russia control unit (GLONASS) (as of model year 2017)
Emergency call system control unit (up to model year 2017)
88Internal supply of rear SAM control unit with fuse and relay module80
89Electric parking brake control unit30
90Electric parking brake control unit30
91Spare-
92Spare-
Relay
ATerminal 15 relay
BCircuit 15R relay (1)
CHeated rear window relay
DFuel pump relay
RSpare
FSeat adjustment relay
GCircuit 15R relay (2)

ECO start/stop function additional battery relay

ECO start/stop function additional battery relay