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Mercedes-Benz SLK-Class Fuse Diagram (R172; 2012-2019)

27/01/2024
MERCEDES

In this article, we consider the third-generation Mercedes-Benz SLK/SLC-Class (R172), produced from 2011 to 2019. Here you will find fuse box diagrams of Mercedes-Benz SLK200, SLK250, SLK350, SLK55, SLC180, SLC200, SLC250, SLC300, SLC43 2012, 2013, 2014, 2015, 2016, 2017, 2018 and 2019, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout).

Fuse Layout Mercedes-Benz SLK / SLC-Class 2012-2019

 

 

 
 
Engine Compartment Fuse Box

Fuse box location

The fuse box is located in the engine compartment, under the cover.

 

 

 

Fuse box diagram

 

 

 

Assignment of the fuses and relay in the engine compartment

Fused function Amp
1 Electronic Stability Program control unit 25
2 Vario roof control control unit 30
3 Vario roof control control unit 30
4 Headlamp control unit (up to model year 2017)
Valid for diesel engine: Fuel filter condensation sensor with heating element (up to model year 2017)
20
5 Rear SAM control unit with fuse and relay module
Electrohydraulic power steering via engine compartment/FFS electrical connector (as of model year 2017)
Exterior lights switch (as of model year 2017)
7.5
6 Valid for diesel engine: CDI control unit
Valid for gasoline engine: ME-SFI control unit
10
7 Starter via starter circuit 50 relay 20
8 Supplemental Restraint System control unit 7.5
9 Vehicle interior socket, front
Cigarette lighter with ashtray illumination
15
10 Wiper motor Wiper park position heater (up to model year 2017) 30
11 Audio/COMAND display
Audio/COMAND control panel
7.5
12 ACC control and operating unit Overhead control panel control unit Steering column tube module control unit (as of model year 2017) 7.5
13 Steering column tube module control unit
Multifunction camera
7.5
14 Electronic Stability Program control unit 7.5
15 Supplemental Restraint System control unit 7.5
16 Radio fan electrical connector (as of model year 2017)
Valid with transmission 725: DIRECT SELECT INTERFACE (as of model year 2017)
Navigation module electrical connector (up to model year 2017)
5
16 Valid for transmission 722: Electronic selector lever module control unit
Valid with transmission 725: DIRECT SELECT INTERFACE
7.5
17 Left front lamp unit and right front lamp unit 30
17 Valid up to 31.05.2012: Overhead control panel control unit 7.5
18 Upper control panel control unit
Overhead control panel control unit
Backup relay (up to model year 2017)
7.5
19 Valid with transmission 725: Electronic ignition lock control unit
Valid for manual transmission:
Electronic ignition lock control unit
Electric steering lock control unit
20
20 Electronic Stability Program control unit 40
21 Glove compartment lamp 7.5
22 Fan motor for internal combustion engine and air conditioning with integrated control (as of model year 2017)
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)
15
23 Valid for engine 152, 271, 274, 276: Electrical connector for interior harness and engine wiring harness
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)
20
24 Valid for engine 152, 271, 274, 276: Electrical connector for interior harness and engine wiring harness
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)
15
25 Valid for engine 276: Circuit 87 M4e connector sleeve
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
15
26 Left front lamp unit and right front lamp unit (as of model year 2017)
Radio (up to model year 2017)
COMAND controller unit (up to model year 2017)
20
27 Electronic ignition lock control unit
Valid for diesel engine: CDI control unit
Valid for gasoline engine: ME-SFI control unit
7.5
28 Instrument cluster
Analog clock
7.5
29 Right headlamp range adjustment actuator motor (as of model year 2017)
Right front lamp unit (up to model year 2017)
10
30 Left headlamp range adjustment actuator motor (as of model year 2017)
Left front lamp unit (up to model year 2017)
10
31A Left fanfare horn
Right fanfare horn
15
31B Left fanfare horn
Right fanfare horn
15
32 Valid for engine 274: Electric air pump (as of model year 2017)
Valid for engine 651: AdBlue® control unit
40
33 Valid for transmission 722: Fully integrated transmission control unit 10
34 Fuel system control unit
Valid for engine 651: AdBlue control unit
7.5
35 Electronic Stability Program control unit
Right outer rear bumper integrated radar sensor and left outer rear bumper integrated radar sensor (as of model year 2017)
5
36 COLLISION PREVENTION ASSIST controller unit (as of model year 2017)
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)
7.5
     
  Relay  
J Circuit 15 relay  
K Circuit 15R relay  
L Reserve relay  
M Starter circuit 50 relay  
N Engine circuit 87 relay  
O Horn relay  
P Valid for engine 271, 274 or 651.9 as of 01.06.2015: Adblue/secondary air injection relay  
Q Valid up to 29.02.2016: Backup relay  
R Chassis circuit 87 relay  
 

Engine Pre-Fuse Box
 
 
 
With ECO start/stop
 
Without ECO start/stop
 
 
Engine Pre-Fuse Box
Fused function Amp
150 Spare -
151 Fan motor for internal combustion engine and air conditioning with integrated control 100
152 Front SAM control unit with fuse and relay module 150
153 ECO start/stop: Front SAM control unit with fuse and relay module
except ECO start/stop: Spare
100
153 ECO start/stop (as of model year 2017): Front SAM control unit with fuse and relay module 60
154 except ECO start/stop: Front SAM control unit with fuse and relay module
ECO start/stop: Spare
100
155 Spare -
156 Spare -
157 Valid as of 01.06.2015 Electrohydraulic power steering 100
157 As of model year 2017:  Electrohydraulic power steering 120
158 Blower regulator and blower motor  50
158 As of model year 2017:  Blower regulator and blower motor  40
159 Vario roof control control unit  40
160 Valid with transmission 725:  Fully integrated transmission control controller unit  60
161 Front SAM control unit with fuse and relay module  100
162 Spare -
163 Rear SAM control unit with fuse and relay module 150
163 As of model year 2017: Rear SAM control unit with fuse and relay module 200
164 ECO start/stop: Supply via ECO start/stop function additional battery
except ECO start/stop: Supply from on-board electrical system battery
100
164 As of model year 2017:  Supply via ECO start/stop function additional battery 200
 

Luggage Compartment Fuse Box

Fuse box location

The fuse box is located in the luggage compartment behind the partition covering.

 

 

Fuse box diagram

 

 

Assignment of the fuses and relay in the trunk

Fused function Amp
37 Driver seat NECK-PRO head restraint solenoid
Front passenger seat NECK-PRO head restraint solenoid
7.5
38 Spare -
39 Left door control unit 30
40 Adaptive damping system control unit 15
41 Right door control unit 30
42 Fuel system control unit 25
43 Spare -
44 Spare -
45 Spare -
46 FM, AM and CL [ZV] antenna amplifier
FM 2, DAB and TV antenna amplifier (up to model year 2017)
Alarm siren
Interior protection sensor
7.5
47 Spare -
48 Spare -
49 Rear window heater 30
50 Right reversible emergency tensioning retractor 50
51 Left reversible emergency tensioning retractor 50
52 Spare -
53 Spare -
54 Spare -
55 Spare -
56 Spare -
57 Spare -
58 Spare -
59 Electric parking brake control unit 5
60 Spare -
61 AIRSCARF control unit 25
62 Driver seat control unit 30
63 AIRSCARF control unit 25
64 Front passenger seat control unit 30
65 Valid for transmission 722, 725 (ECO start/stop) (up to model year 2017)
Electric oil pump
10
66 Spare -
67 Sound system amplifier control unit 40
68 Engine sound control unit (as of model year 2017) 15
69 Radio (as of model year 2017)
COMAND controller unit (as of model year 2017)
20
70 Tire pressure monitor control unit 5
71 Valid for engine 274: Left exhaust flap actuator motor (as of model year 2017) 7.5
72 Center console stowage compartment socket (up to model year 2017) 15
73 Valid for engine 274, 276: Charge air cooler circulation pump relay (as of model year 2017) 10
74 KEYLESS-GO control unit 7.5
75 Vario roof control control unit 20
76 MAGIC SKY CONTROL control unit 7.5
77 Cellular telephone system antenna amplifier / compensator 5
78 Media interface control unit (up to model year 2017) 7.5
79 Multimedia connection unit (as of model year 2017)
Radar sensors control unit (up to model year 2017)
5
80 Parking system control unit 7.5
81 Mobile phone contact plate 5
82 Reversing camera (as of model year 2017) 5
83 Dedicated Short-Range Communications control unit (as of model year 2017)
VICS and Electronic Toll Collection power supply electrical connector (up to model year 2017)
7.5
84 Digital Audio Broadcasting control unit (up to model year 2017)
Satellite digital audio radio (SDAR) control unit (up to model year 2017)
5
85 Tuner unit (as of model year 2017)
Digital TV tuner (up to model year 2017)
7.5
86 Camera cover control unit (as of model year 2017) 5
87 HERMES control unit (as of model year 2017)
eCall Russia control unit (GLONASS) (as of model year 2017)
Emergency call system control unit (up to model year 2017)
7.5
88 Internal supply of rear SAM control unit with fuse and relay module 80
89 Electric parking brake control unit 30
90 Electric parking brake control unit 30
91 Spare -
92 Spare -
     
  Relay  
A Terminal 15 relay  
B Circuit 15R relay (1)  
C Heated rear window relay  
D Fuel pump relay  
R Spare  
F Seat adjustment relay  
G Circuit 15R relay (2)  
 
ECO start/stop function additional battery relay

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