2015-2020 Mercedes-Benz C-Class W205 Fuse Locations

Need to find the Fuses and Relays on your Mercedes-Benz C-Class W205? Learn how to locate the fuse boxes of your Mercedes-Benz by following the procedures below.

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Interior Driver’s Side Fuses

This fuse box is located on the side of the dashboard on the driver’s side.

Front Passenger Footwell

These fuses are located in the footwell on the passenger side.

Remove the plastic cover to access the passenger fuses.

Location	System	Ampere
301	Hybrid: Pyrofuse via high-voltage disconnect device	5
302	The right front door control unit	30
303	W205, S205, V205: Left rear door control unit	30
304	Valid for transmission 722: Intelligent servo module for DIRECT SELECT	20
305	Driver seat control unit, Heater	30
306	Front passenger seat control unit, Heater	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
310	Active engine mounts control unit	20
311	Booster blower electronic blower regulator	10
312	Overhead control panel control unit	10
313	Power electronics control unit	10
314	The electronic differential control unit	5
315	Powertrain control unit	5
316	Supplemental Restraint System control unit	7.5
317	The panoramic sliding sunroof control module	30
318	The stationary heater control unit	20
319	High-voltage PTC heater	5
320	AIRMATIC control unit	25
321	Dedicated Short-Range Communications control unit	5
322	Head unit	20
323	Parking system control unit	5
MF1/1	Audio/COMAND display	7.5
MF1/2	Stereo multifunction camera	7.5
MF1/3	Rain/light sensor with additional functions	7.5
MF1/4	Driver seat control unit	7.5
MF1/5	Front passenger seat 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	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

Engine Bay Main Fuses

Main fuse box in the engine bay.

Location	System	Ampere
100	Hybrid: Vacuum pump	40
101	Circuit 87/2	15
102	Circuit 87/1	20
103	Circuit 87/4	15
104	Circuit 87/3	15
105	Automatic transmission fluid auxiliary oil pump control unit	15
106	Spare	–
107	Electric coolant pump	60
108	LED headlamp	20
109	Wiper motor	30
110	Static LED headlamp	20
111	Starter	30
112	Accelerator pedal sensor	15
113	Spare	–
114	AIRmatic compressor	40
115	Left horn and right horn	15
116	Spare	–
117	Spare	–
118	Electronic Stability Program control unit	5
119	Circuit 87 C2 connector sleeve	15
120	Circuit 87 C1 connector sleeve	5
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	5
127	Hybrid: Voltage dip limiter	5
128	Left front lamp unit and exterior lights switch	5
129	Starter circuit 50 relay	30
129A	Starter circuit 50 relay	30
Relay
G	Engine compartment circuit 15 relay
H	Starter circuit 50 relay
I	Vacuum pump relay (+)
J	CPC relay
K	Oil pump relay
L	Horn relay
M	Wiper park position heater relay
N	Circuit 87M relay
O	Starter circuit 15 relay
P	Coolant pump relay
Q	Vacuum pump relay (-)
R	AIRmatic relay

Trunk Fuses

Fuse panel in the trunk area.

Location	System	Ampere
400	BlueTEC: AdBlue control unit	25
401	BlueTEC: AdBlue control unit	15
402	BlueTEC: AdBlue control unit	20
403	Front passenger seat partially electric seat adjustment switch	30
404	Valid up to 30.11.2015: Driver seat partially electric seat adjustment switch	30
405	Not used	–
406	The left front door control unit	30
407	Not used	–
408	W205, S205, V205: Right rear door control unit	30
409	Not used	–
410	Stationary heater radio remote control receiver	5
411	Left front reversible emergency tensioning retractor	30
412	Hybrid: Battery management system control unit	7.5
413	Trunk lid control unit	5
414	Tuner unit	5
415	Camera cover control unit / Perfume atomizer	5
416	Cellular telephone system antenna amplifier/compensator	7.5
417	360° camera control unit / Backup camera	5
418	Rear seat heater control unit / Airscarf	5
419	Front passenger seat lumbar support adjustment control unit	5
420	Driver seat lumbar support adjustment control unit	5
421	Not used	–
422	Not used	–
423	Sound system amplifier control unit	5
425	Not used	–
426	Not used	–
427	Not used	–
428	Not used	–
429	Not used	–
430	Not used	–
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
435	Trailer recognition control unit	25
	AMG: Electronic differential control unit
436	Trailer recognition control unit	15
437	Trailer recognition control unit	25
438	DC/AC converter control unit	30
439	Taximeter	5
440	Rear seat heater control unit / Airscarf Module	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	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	5
450	Rear SAM control unit	5
451	Fuel system control unit	5
452	The integrated outer right rear bumper radar sensor	5
453	The left front bumper radar sensor	5
454	Valid for transmission 722: Fully integrated transmission control unit	7.5
455	DC/AC converter control unit	5
456	The front long-range radar sensor	5
457	Hybrid:	5
458	Rear switching module	5
459	Hybrid: Charger	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	30
464	Trunk lid 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	40
Relay
S	Vehicle interior circuit 15 relay
T	Rear window heater relay
U	2nd seat row cup holder and sockets relay
V	AdBlue relay
X	1 st seat row/trunk refrigerator box and sockets relay
Y	Not used relay
ZR1	Fuel filter heater relay
ZR2	Reserve relay
ZR3	Reserve relay

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Engine Bay Pre Fuses

These are pre-fuses protecting critical circuits. Located near the battery.

Note the fuses on the side as well, next to the battery.

We hope you find the 2015-2020 Mercedes-Benz C-Class W205 Fuse Locations guide helpful. Check these troubleshooting and repair guides for more help on your Mercedes-Benz.