Mercedes-Benz CLA C117 (2014-2019) – fuse box

Mercedes-Benz CLA C117 (2014-2019) – fuse box diagram

Year of production: 2014, 2015, 2016, 2017, 2018, 2019.

The cigarette lighter fuses (power socket) on the Mercedes-Benz CLA-Class are fuses 70 (rear center console socket), 71 (luggage compartment socket) and 73 (front cigarette lighter socket, internal power socket) in the passenger compartment fuse box.

Passenger compartment fuse box

Location of the fuse box

The fuse box is located under the floor near the passenger seat.

Remove the mats.
Fold out the perforated floor covering (1) in the direction of the arrow.
Press down on the retaining clip (2) to release the cover (3).
Tilt the cover (3) in the direction of the arrow towards the catch.
Pull off the cover (3) to the front.
The fuse location table (4) is located in the lower right part of the cover (3).

The scheme of the fuse box

Assignment of fuses and relays in the passenger compartment

Number Description Amperes [A]
21 Valid for diesel engine:

PTC heater amplifier

150
22 Additional battery relay for the ECO start / stop function 200
23 Left front door control unit 30
24 Right front door control unit 30
25 SAM control unit 30
26 Additional ECO start / stop battery connector sleeve 10
27 Engine compartment fuse and relay module 30
28 Sound generator control unit in the interior of the vehicle 5
29 until 02/11/2014:

Trailer socket;

as of November 3, 2014:

Trailer recognition control unit.

15
30 Trailer recognition control unit 5
31 4MATIC:

All-wheel drive controller.

5
32 Steering wheel lamp module control unit 5
33 Audio / COMAND control panel 5
34 ACC control and operating unit 7.5
35 Rear window heating 40
36 Driver seat control unit;

Driver seat lumbar support adjustment control unit.

7.5
37 Audio / COMAND display 7.5
38 Supplemental restraint system control unit 7.5
39 Suspended control unit control unit 10
40 Valid for engine 651 (EU6 emission standard):

Powertrain control unit

15
41 Panoramic sliding sunroof control module 30
42 Radio(Audio 5 USB, Audio 20 CD, Audio 20 CD with CD changer);

COMAND control unit.

5
42 Radio (Radio 20, Audio 20 USB) 25
43 Parking system control unit 5
44 Left front reversible emergency tension retractor 40
45 Right front reversible emergency tensioner 40
46 Front passenger seat control unit;

Front passenger seat lumbar support adjustment control unit.

7.5
47 Navigation module 7.5
47 Adaptive damping system control unit 25
48 Not used
49 Drive Kit control unit for iPhone® 7.5
49 COMAND fan motor 5
50 Camera cover control unit 5
51 Not used
52 Not used
53 Not used
54 Not used
55 Telematics services communication module;

KEYLESS-GO control unit.

5
56 Steering wheel lamp module control unit 10
57 Lane Keeping Assistant:

multifunctional control unit for a special purpose vehicle.

30
57 Special vehicle:

multifunctional control unit for a special purpose vehicle.

7.5
58 Emergency vehicle fuse box 30
59 Front passenger seat control, uni 30
60 Driver seat control unit 30
61 Sound system amplifier control unit 40
62 Valid for gearbox 711:

Electric steering lock.

20
63 Fuel system control unit 25
64 Electronic toll collection control unit;

Dedicated control unit for short-range communications.

1
65 Lamp in the glove box 5
66 Emergency vehicle fuse box 15
67 Not used
68 Not used
69 Not used
70 Rear center console socket 25
71 Trunk socket 25
72 Front cigarette lighter with ashtray lighting;

Vehicle interior power socket.

25
73 Electric parking brake control unit 30
74 Electric parking brake control unit 30
75 Trailer recognition control unit 20
76 Trailer recognition control unit 25
77 Trailer recognition control unit 25
78 Trunk lid / tailgate control unit;

Emergency vehicle fuse box.

40
79 SAM control unit 40
80 SAM control unit 40
81 Blower regulator 40
82 Suspended control unit control unit 10
83 Electronic ignition lock control unit 7.5
86 FM, AM and CL [ZV] antenna amplifier

from 01/06/2016:

Antenna amplifier / compensator for a mobile phone system

5
87 Diagnostic connector 10
88 Instrument cluster 10
89 Exterior lights switch 5
90 Left rear bumper smart radar sensor;

smart radar sensor for the right rear bumper.

5
91 Pedal operation monitor switch;

Footwell lighting switch.

5
92 Fuel system control unit 5
93 Electric parking brake control unit 5
94 Supplemental restraint system control unit 7.5
95 Front passenger seat occupancy recognition i

ACSR weight detection system (WSS) control unit

7.5
96 Tailgate Wiper Motor 15
97 Mobile phone electrical connector 5
98 SAM control unit 5
99 Tire pressure monitor control unit 5
100 Valid for engine 133:

DIRECT SELECT INTERFACE

5
101 4MATIC:

All-wheel drive controller

10
102 Stationary heater remote control receiver

Valid for AMG vehicles from 01/09/2015:

Transmission mode control unit

from 01/06/2016:

Antenna switch for telephone and heating

5
103 Emergency call system control unit;

Telematics services communication module;

HERMES control unit.

5
104 Multimedia interface control unit;

Multimedia connection unit.

5
105 Digital Audio Broadcasting control unit;

Satellite digital audio radio (SDAR) control unit.

5
105 Tuner module 7.5
106 Multifunctional camera 5
107 Digital TV tuner 5
108 until May 31, 2016:

Reversing camera.

5
108 from 01/06/2016:

Reversing camera.

7.5
109 Electrical connector for the charging socket 20
110 COMAND radio control;

Engine sound driver.

30
Relay
A Circuit 15 of the relay
B Rear window wiper relay
C. Relay circuit 15R2
D Heated rear window relay
E. 15R1 circuit of the relay
F. Relay circuit 30g
G. Not used

Fuse box in the engine compartment

Mercedes-Benz CLA-Class – fuse box diagram – engine compartment
Number Description Amperes [A]
201 Alarm siren 5
202 Stationary heater control unit 20
203 LED headlight:

Right front lamp unit

15
204 Electronic stability program control unit 25
205 Left horn fanfare;

Right horn fanfare.

15
206 Valid for engine 651:

CDI control unit;

Valid for engine 607:

Powertrain control unit.

5
207  Valid  for diesel engine:

Circuit relay 87M

5
208 Valid for engine 133, 607:

Circuit relay 87

7.5
209 LED headlight:

Left front lamp unit

15
210 Heated windshield relay 5
211 Not used
212 Valid for engines 133, 270:

Connector sleeve, circumference 87M3;

Valid for engine 651:

Heating element of the deaeration hose;

Coolant thermostat heating element;

Exhaust gas recirculation cooler bypass diverter valve;

Valid for engine 607 (EU5 emission standard):

Oxygen sensor in front of the catalyst;

Boost pressure positioner;

Valid for engine 607 (EU6 emission standard):

Oxygen sensor in front of the catalyst;

Valid for engine 607: 

CDI control unit.

15
213 Valid for engines 133, 270, 651:

Connector sleeve, circuit 87 M2e;

Valid for engine 607 (EU5 emission standard):

Camshaft;

Hall sensor;

CDI control unit;

Quantity control valve;

Valid for engine 607 (EU6 emission standard):

Oxygen sensor after catalytic converter;

CDI control unit;

15
214 Valid for engines 133, 270, 651:

Connector sleeve, circuit 87 M4e.

10
215 Valid for gasoline engine:

Cylinder 1 ignition coil;

Cylinder 2 ignition coil;

Cylinder 3 ignition coil;

Cylinder 4 ignition coil;

Cylinder 4 ignition coil;

Valid for engine 651: 

Quantity control valve;

Valid for engine 607:

CDI control unit;

Boost pressure positioner  ;

Quantity control valve;

20
216 Valid for gasoline engine:

ME-SFI control unit;

Valid for engine 607:

Powertrain control unit.

5
217 Valid with the 724 gearbox:

Dual clutch gearbox fully integrated gearbox control unit,

25
218 Electronic stability program control unit 5
219 Not used
220 Circulation pump for coolant to the gearbox 10
221 Not used
222 Not used
223 Not used
224 Electric controller DISTRONIC;

COLLISION PREVENTION ASSIST driver.

7.5
225 Not used
226 Not used
227 Not used
228 Not used
229 Left front lamp 5
230 Electronic stability program control unit 5
231 Right front lamp 5
232 Headlamp control unit 15
233 Not used
234 Valid for engine 607: 

Powertrain control unit

5
235 Valid for engine 607:

Fan motor;

Radiator shutter actuator.

7.5
Valid for engine 133:

Charge air cooler circulation pump;

Charge air cooler circulation pump.

7.5
236 SAM control unit 40
237 Electronic stability program control unit 40
238 Heated windscreen 50
239 Wiper speed 1/2 relay 30
240A Starter circuit relay 50 25
240B Circuit 15 Relay (Not Latched) 25
241 Not used 7.5
Relay
J. Fanfare horn relay
K. Wiper speed 1/2 relay
L Windshield wiper on / off relay
M. Starter circuit relay 50
N Circuit relay 87M
O ECO start / stop:

Relay for gearbox coolant circulation pump

P. Backup relay (F58kP)
Q Circuit 15 Relay (Not Latched)
R Circuit 15 relay
S Circuit 87 relay
T. Heated windshield relay

Front electric fuse box

Mercedes-Benz CLA-Class – fuse box diagram – front electric fuse box

Mercedes-Benz CLA-Class – fuse box diagram – front electric fuse box
Number Description Amperes [A]
1 Alternator 300
2 Vehicle interior fuse box 200
Valid for diesel engine:

Vehicle interior fuse box

250
3 Electric power steering controller 100
4 SAM control unit 40
5 Fan motor 80
6 Valid for engine 607:

Fuel heating control unit

70
7 Valid for engine 607 (EU5 emission standard):

Control unit supporting DPF regenerative heater

125
8 Valid for engines 607, 651:

Glow output stage

100
Relay
F32k1 Decoupling relay
READ:  Mercedes-Benz CL C215 (1998-2005) - fuse box

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