This information is for the following Mercedes-Benz C-Class (W205) models and years:

– 2014, 2015, 2016, 2017 and 2018 Mercedes-Benz C-Class (w205) C180, C200, C250; C350 PLUG-IN HYBRID; C400 4MATIC; C43, C63, C450 AMG; C200 d, C220 d, C220 BlueTec, C250 d, C250 BlueTec, C300 BlueTec.

There are 4 fuse boxes on the Mercedes-Benz C-Class (W205):

1. Fuses in Dashboard

To gain access to the fuses in the dashboard fuse box, open the driver’s door and pull out cover (1) slightly at the bottom in direction of arrow (3). Fold cover (1) outwards in the direction of arrow (2). To close fold in cover (1) until in engages.

Mercedes-Benz C-Class (W205) Dashboard Fuse Box Diagram

Description and Amperage

No.
Fused component
A
200 Front SAM control unit 50
201 Front SAM control unit 40
202 Alarm siren
ATA [EDW]/tow-away protection/interior protection control unit (A205)
5
203 Valid with transmission 716: Electric steering lock control unit 20
204 Diagnostic connector 5
205 Electronic ignition lock control unit 7.5
206 Analog clock 5
207 Climate control control unit 15
208 Instrument cluster 7.5
209 Climate control operating unit
Upper control panel control unit
5
210 Steering column tube module control unit 5
211 AMG: Electronic Stability Program control unit 25
212 as of 01.06.2016: Antenna changeover switch for telephone and stationary heated 5
213 Electronic Stability Program control unit 5
214 AMG: Electric parking brake control unit 30
215 Spare
216 Glove compartment lamp 7.5
217 Japan version: Dedicated Short-Range Communications control unit 5
218 Supplemental Restraint System control unit 7.5
219 Weight sensing system (WSS) control unit 5
220 Spare
Relay
F Relay, circuit 15R

2 – Fuse Box located in the front-passenger footwell

To access the fuse box open the front-passenger door and open fold cover (1) out towards the rear and remove it.

Mercedes-Benz C-Class (W205) front-passenger footwell Fuse Box Diagram

Description and Amperage

No.
Fused component
A
301 Hybrid: Pyrofuse via high-voltage disconnect device 5
302 Right front door control unit 30
303 W205, S205, V205: Left rear door control unit
A205, C205: Rear control unit
30
304 Valid for transmission 722: Intelligent servo module for DIRECT SELECT 20
305 Driver seat control unit
Driver seat heater control unit
Front seat heater control unit
30
306 Front passenger seat control unit
Front passenger seat heater control unit
Front seat heater control unit
30
307 AMG: Active engine mounts control unit 5
308 USA version: Electric Brake Control electrical connector 30
309 Emergency call system control unit 10
HERMES control unit
Telematics services communications module
5
310 AMG: Active engine mounts control unit 20
311 Booster blower electronic blower regulator 10
312 Overhead control panel control unit 10
313 Hybrid: Power electronics control unit 10
314 AMG: Electronic differential control unit 5
315 Powertrain control unit
Valid for diesel engine: CDI control unit
Valid for gasoline engine: ME-SFI control unit
5
316 Supplemental Restraint System control unit 7.5
317 Panoramic sliding sunroof control module
Sliding roof control module
30
318 Stationary heater control unit 20
319 Hybrid: High-voltage PTC heater 5
320 AIRMATIC control unit
Adaptive damping system control unit
25
321 Japan version: Dedicated Short-Range Communications control unit 5
322 Head unit 20
323 Parking system control unit 5
MF1/1 Audio/COMAND display
Audio equipment fan motor
7.5
MF1/2 Stereo multifunction camera
Mono multifunction camera
7.5
MF1/3 Rain/light sensor with additional functions
W205, S205, V205: Overhead control panel control unit
7.5
MF1/4 Driver seat control unit
Driver seat heater control unit
Front seat heater control unit
7.5
MF1/5 Front passenger seat control unit
Front passenger seat heater control unit
Front seat heater control unit
7.5
MF1/6 Steering column tube module control unit 7.5
MF2/1 Left front reversible emergency tensioning retractor 5
MF2/2 Audio/COMAND control panel
Touchpad
5
MF2/3 Right front reversible emergency tensioning retractor 5
MF2/4 Heads-up display 5
MF2/5 Multimedia connection unit 5
MF2/6 Hybrid: Electrical refrigerant compressor 5
MF3/1 Feedback line, terminal 30g, front SAM control unit 5
MF3/2 Radar sensors control unit 5
MF3/3 Spare
MF3/4 Driver side instrument panel button group 5
MF3/5 Rear air conditioning operating unit 5
MF3/6 Tire pressure monitor control unit 5

3 – Fuse Box located in the engine compartment

To access the engine compartment fuse box, open the hood and look on the right hand side. You’ll see a cover for the fuse box.
Press clips (1) on the cover together and remove fuse box cover (2) upwards. Remove the screws (3) from the fuse box (4).

Mercedes-Benz C-Class (W205) engine compartment Fuse Box Diagram

Description and Amperage

No.
Fused component
A
100 Hybrid: Vacuum pump 40
101 Valid except AMG: Connector sleeve, circuit 87/2 15
AMG: Connector sleeve, circuit 87/2 20
102 Valid except AMG: Connector sleeve, circuit 87/1 20
AMG: Connector sleeve, circuit 87/1 25
103 Valid except AMG: Connector sleeve, circuit 87/4 15
AMG: Connector sleeve, circuit 87/4 20
104 Valid except AMG: Connector sleeve, circuit 87/3 15
AMG: Connector sleeve, circuit 87/3 20
105 Valid for transmission 722.9 (except 722.930): Automatic transmission fluid auxiliary oil pump control unit 15
106 Spare
107 Valid with engine 274.9: Electric coolant pump 60
108 Static LED headlamp: Right front lamp unit
High performance LED, Dynamic LED headlamp:
Left front lamp unit
Right front lamp unit
20
109 Wiper motor 30
110 Static LED headlamp: Left front lamp unit 20
High performance LED, Dynamic LED headlamp:
Left front lamp unit
Right front lamp unit
111 Starter 30
112 Hybrid: Accelerator pedal sensor 15
113 Spare
114 AIRmatic compressor 40
115 Left horn and right horn 15
116 Spare
117 Spare
118 Hybrid: Electronic Stability Program control unit 5
119 Circuit 87 C2 connector sleeve 15
120 Valid except AMG: Circuit 87 C1 connector sleeve 5
AMG: Circuit 87 C1 connector sleeve 15
121 Electronic Stability Program control unit 5
122 CPC relay 5
123 Spare
124 Spare
125 Front SAM control unit 5
126 Powertrain control unit
Valid for diesel engine: CDI control unit
Valid for gasoline engine: ME-SFI control unit
5
127 Hybrid: Voltage dip limiter 5
128 Left front lamp unit and exterior lights switch 5
129 Hybrid: Starter circuit 50 relay 30
129A Hybrid: Starter circuit 50 relay 30
Relay
G Engine compartment circuit 15 relay
H Starter circuit 50 relay
I Hybrid: Vacuum pump relay (+)
J CPC relay
K Valid for transmission 722.9 (except 722.930): Oil pump relay
L Horn relay
M Wiper park position heater relay
N Circuit 87M relay
O Hybrid: Starter circuit 15 relay
P Valid with engine 274.9: Coolant pump relay
Q Hybrid: Vacuum pump relay (-)
R AIRmatic relay

4. Fuses in luggage compartment

To gain access to the fuse box on the right side of the trunk, open cover upwards in the direction of the arrow as pictured below (1).

Mercedes-Benz C-Class (W205) luggage compartment Fuse Box Diagram
1 – Terminal 30 “E1” feed

2 – Terminal 30g “E2” feed

Description and Amperage

No.
Fused component
A
400 BlueTEC: AdBlue® control unit 25
401 BlueTEC: AdBlue® control unit 15
402 BlueTEC: AdBlue® control unit 20
403 Valid up to 30.11.2015: Front passenger seat partially electric seat adjustment switch 30
Valid as of 01.12.2015: Front passenger seat partially electric seat adjustment switch 25
404 Valid up to 30.11.2015: Driver seat partially electric seat adjustment switch 30
Valid as of 01.12.2015: Driver seat partially electric seat adjustment switch 25
405 Spare
406 Left front door control unit 30
407 Spare
408 W205, S205, V205: Right rear door control unit
A205, C205: Rear control unit
30
409 Spare
410 Stationary heater radio remote control receiver
Antenna changeover switch for telephone and stationary heater
5
411 Left front reversible emergency tensioning retractor 30
412 Hybrid: Battery management system control unit 7.5
413 Trunk lid control control unit 5
414 Tuner unit 5
415 Camera cover control unit
Perfume atomizer generator
5
416 Cellular telephone system antenna amplifier/compensator
Mobile phone contact plate
7.5
417 360° camera control unit
Reversing camera
5
418 Rear seat heater control unit
AIRSCARF control unit
5
419 Front passenger seat lumbar support adjustment control unit 5
420 Driver seat lumbar support adjustment control unit 5
421 Spare
422 Spare
423 Sound system amplifier control unit 5
424 AIR BODY CONTROL Plus control unit
Valid for engine 276: Engine sound control unit
15
425 Spare
426 Spare
427 Spare
428 Spare
429 Spare
430 Spare
431 Special-purpose vehicle multifunction control unit 25
432 Special-purpose vehicle multifunction control unit 25
433 Trailer recognition control unit 15
434 Trailer recognition control unit 15
AMG: Electric parking brake control unit 30
435 Trailer recognition control unit
AMG: Electronic differential control unit
25
436 Trailer recognition control unit 15
437 Trailer recognition control unit 25
438 DC/AC converter control unit 30
439 Taximeter
Mirror taximeter
5
A205: Rear control unit 25
440 Rear seat heater control unit
AIRSCARF control unit
30
441 AIRSCARF control unit 30
442 Fuel system control unit 25
443 Right front reversible emergency tensioning retractor 30
444 Tablet PC electrical connector 15
445 S205: Luggage compartment socket 15
446 Front cigarette lighter with ashtray illumination
Vehicle interior power outlet
15
447 Right rear center console socket 12V 15
448 Valid for transmission 722, 725: Park pawl capacitor 10
449 Valid for engine 626: Fuel filter element with integrated heater
AMG: Electric parking brake control unit
5
450 Rear SAM control unit 5
451 Fuel system control unit
BlueTEC: AdBlue® control unit
5
452 Integrated outer right rear bumper radar sensor
Integrated outer left rear bumper radar sensor
Center rear bumper radar sensor
Outer right rear bumper radar sensor
Outer left rear bumper radar sensor
5
453 Left front bumper radar sensor
Right front bumper radar sensor
COLLISION PREVENTION ASSIST controller unit
5
454 Valid for transmission 722: Fully integrated transmission control unit 7.5
Driving school package:
Footwell illumination switch
Pedal operation monitor switch
BlueTEC: AdBlue® control unit
5
455 DC/AC converter control unit 5
456 Front long-range radar sensor
DISTRONIC electric controller unit
5
457 Hybrid:
Power electronics control unit
Battery management system control unit
AMG:
Electronic differential control unit
Active engine mounts control unit
5
458 Rear switching module 5
459 Hybrid: Charger
AMG: AMG suspension control unit
5
460 KEYLESS-GO control unit 10
461 FM 1, AM, CL [ZV] and KEYLESS-GO antenna amplifier 5
462 Sound system amplifier control unit 40
463 W205, S205, V205: Rear window heater via rear window interference suppression capacitor
A205, C205: Soft top/vehicle interior electrical connector
30
464 Trunk lid control control unit
Liftgate control control unit
40
465 Rear SAM control unit 40
466 Rear SAM control unit 40
467 Valid for engine 626: Fuel filter element with integrated heater
A205: Rear control unit
40
Relay
S Vehicle interior circuit 15 relay
T Rear window heater relay
U 2nd seat row cup holder and sockets relay
V BlueTEC: AdBlue® relay
X 1 st seat row/trunk refrigerator box and sockets relay
Y Spare relay
ZR1 Valid for engine 626: Fuel filter heater relay
ZR2 Reserve relay
ZR3 Reserve relay