2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (2024)

Updated on Reading Time: 5 minutes

Do you need to find the Fuses and Relays on your Mercedes-Benz C-Class W205? Follow the procedures below to learn how to locate the fuse boxes of your Mercedes-Benz.

Repair Cost: 2

The average repair cost range in USD to complete this repair by either an honest mechanic or as a DIY. Including the cost of parts but not tools.

Repair Difficulty:

This indicates how difficult it is for most DIYers and mechanics to perform this repair.

Interior Driver’s Side Fuses

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

2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (2)
LocationSystemAmpere
200Front SAM control unit50
201Front SAM control unit40
202Alarm siren5
203Electric steering lock control unit20
204Diagnostic connector5
205Electronic ignition lock control unit7.5
206Analog clock5
207Climate control unit15
208Instrument cluster7.5
209Climate control operating unit5
210Steering column tube module control unit5
211Electronic Stability Program control unit25
212Antenna changeover switch for telephone and stationary heated5
213Electronic Stability Program control unit5
214Electric parking brake control unit30
215Not Used
216Glove compartment lamp7.5
217Dedicated Short-Range Communications control unit5
218Supplemental Restraint System control unit7.5
219Weight sensing system (WSS) control unit5
220Not Used
F RelayRelay, circuit 15R

Front Passenger Footwell

2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (3)

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

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2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (4)

Remove the plastic cover to access the passenger fuses.

2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (5)
LocationSystemAmpere
301Hybrid:Pyrofuse via high-voltage disconnect device5
302The right front door control unit30
303W205, S205, V205:Left rear door control unit30
304Valid for transmission 722:Intelligent servo module for DIRECT SELECT20
305Driver seat control unit, Heater30
306Front passenger seat control unit, Heater30
307AMG:Active engine mounts control unit5
308USA version:Electric Brake Control electrical connector30
309Emergency call system control unit10
310Active engine mounts control unit20
311Booster blower electronic blower regulator10
312Overhead control panel control unit10
313Power electronics control unit10
314The electronic differential control unit5
315Powertrain control unit5
316Supplemental Restraint System control unit7.5
317The panoramic sliding sunroof control module30
318The stationary heater control unit20
319High-voltage PTC heater5
320AIRMATIC control unit25
321Dedicated Short-Range Communications control unit5
322Head unit20
323Parking system control unit5
MF1/1Audio/COMAND display7.5
MF1/2Stereo multifunction camera7.5
MF1/3Rain/light sensor with additional functions7.5
MF1/4Driver seat control unit7.5
MF1/5Front passenger seat control unit7.5
MF1/6Steering column tube module control unit7.5
MF2/1Left front reversible emergency tensioning retractor5
MF2/2Audio/COMAND control panel5
MF2/3Right front reversible emergency tensioning retractor5
MF2/4Heads-up display5
MF2/5Multimedia connection unit5
MF2/6Hybrid:Electrical refrigerant compressor5
MF3/1Feedback line, terminal 30g, front SAM control unit5
MF3/2Radar sensors control unit5
MF3/3Spare
MF3/4Driver-side instrument panel button group5
MF3/5Rear air conditioning operating unit5
MF3/6Tire pressure monitor control unit5

Engine Bay Main Fuses

2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (6)

Main fuse box in the engine bay.

2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (7)
LocationSystemAmpere
100Hybrid:Vacuum pump40
101Circuit 87/215
102Circuit 87/120
103Circuit 87/415
104Circuit 87/315
105Automatic transmission fluid auxiliary oil pump control unit15
106Spare
107Electric coolant pump60
108LED headlamp20
109Wiper motor30
110Static LED headlamp20
111Starter30
112Accelerator pedal sensor15
113Spare
114AIRmatic compressor40
115Left horn and right horn15
116Spare
117Spare
118Electronic Stability Program control unit5
119Circuit 87 C2 connector sleeve15
120Circuit 87 C1 connector sleeve5
121Electronic Stability Program control unit5
122CPC relay5
123Spare
124Spare
125Front SAM control unit5
126Powertrain control unit5
127Hybrid:Voltage dip limiter5
128Left front lamp unit and exterior lights switch5
129Starter circuit 50 relay30
129AStarter circuit 50 relay30
Relay
GEngine compartment circuit 15 relay
HStarter circuit 50 relay
IVacuum pump relay (+)
JCPC relay
KOil pump relay
LHorn relay
MWiper park position heater relay
NCircuit 87M relay
OStarter circuit 15 relay
PCoolant pump relay
QVacuum pump relay (-)
RAIRmatic relay

Trunk Fuses

2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (8)

Fuse panel in the trunk area.

2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (9)
LocationSystemAmpere
400BlueTEC:AdBluecontrol unit25
401BlueTEC:AdBluecontrol unit15
402BlueTEC:AdBluecontrol unit20
403Front passenger seat partially electric seat adjustment switch30
404Valid up to 30.11.2015:Driver seat partially electric seat adjustment switch30
405Not used
406The left front door control unit30
407Not used
408W205, S205, V205:Right rear door control unit30
409Not used
410Stationary heater radio remote control receiver5
411Left front reversible emergency tensioning retractor30
412Hybrid:Battery management system control unit7.5
413Trunk lid control unit5
414Tuner unit5
415Camera cover control unit/ Perfume atomizer5
416Cellular telephone system antenna amplifier/compensator7.5
417360° camera control unit/ Backup camera5
418Rear seat heater control unit/ Airscarf5
419Front passenger seat lumbar support adjustment control unit5
420Driver seat lumbar support adjustment control unit5
421Not used
422Not used
423Sound system amplifier control unit5
425Not used
426Not used
427Not used
428Not used
429Not used
430Not used
431Special-purpose vehicle multifunction control unit25
432Special-purpose vehicle multifunction control unit25
433Trailer recognition control unit15
434Trailer recognition control unit15
435Trailer recognition control unit25
AMG:Electronic differential control unit
436Trailer recognition control unit15
437Trailer recognition control unit25
438DC/AC converter control unit30
439Taximeter5
440Rear seat heater control unit / Airscarf Module30
441AIRSCARF control unit30
442Fuel system control unit25
443Right front reversible emergency tensioning retractor30
444Tablet PC electrical connector15
445S205:Luggage compartment socket15
446Front cigarette lighterwith ashtray illumination15
447Right rear center console socket 12V15
448Valid for transmission 722, 725:Park pawl capacitor10
449Valid for engine 626:Fuel filter element with integrated heater5
450Rear SAM control unit5
451Fuel system control unit5
452The integrated outer right rear bumper radar sensor5
453The left front bumper radar sensor5
454Valid for transmission 722:Fully integrated transmission control unit7.5
455DC/AC converter control unit5
456The front long-range radar sensor5
457Hybrid:5
458Rear switching module5
459Hybrid:Charger5
460KEYLESS-GO control unit10
461FM 1, AM, CL [ZV] and KEYLESS-GO antenna amplifier5
462Sound system amplifier control unit40
463W205, S205, V205:Rear window heater via rear window interference suppression capacitor30
464Trunk lid control unit40
465Rear SAM control unit40
466Rear SAM control unit40
467Valid for engine 626:Fuel filter element with integrated heater40
Relay
SVehicle interior circuit 15 relay
TRear window heater relay
U2nd seat row cup holder and sockets relay
VAdBluerelay
X1 st seat row/trunk refrigerator box and sockets relay
YNot used relay
ZR1Fuel filter heater relay
ZR2Reserve relay
ZR3Reserve relay

.

Engine Bay Pre Fuses

2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (10)

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

2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (11)

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

Written and fact-checked by:

  • 2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (12)

    YOUCANIC Techs

    YOUCANIC articles are written by authors who collectively have over 60 years of experience in the automotive field and years of hands-on experience on vehicles. These authors are certified ASE G1 Automotive Maintenance engine professionals (the highest level certification for vehicle maintenance and repair). They hold associate’s and bachelor’s degrees, as well as having gone on to further study to receive a master’s and doctorate degrees. These authors collaborate on research, writing, editing, and fact-checking every article to ensure that it is accurate and up to date and delivers the best counsel and information to YOUCANIC readers.

    View all postsRush*t Hila is an engineer and ASE certified in G1 Automotive Maintenance

2015-2020 Mercedes-Benz C-Class W205 Fuse Locations - YOUCANIC (2024)

FAQs

How to open w205 fuse box? ›

 To open: press safety clips (1) on the cover together.  Remove fuse box cover (2) upwards.  Use a dry cloth to remove any moisture from the fuse box.  Loosen screws (3), fold up fuse box lid (4) and remove it.

Where is the secondary engine compartment fuse box? ›

The secondary under-hood fuse box is next to the battery. To open it, push the tabs as shown. If something electrical in your vehicle stops working, check for a blown fuse first. Determine from the chart on pages and , or the diagram on the fuse box lid, which fuse or fuses control that device.

What is AC class fuse? ›

Mersen Class C fuses have British standard (BS88) dimensions and are exact replacements for the British fuses and older HRCII-C fuses. Class C fuses are not dimensionally or electrically interchangeable with other North American fuses. They feature ceramic bodies and bolt-in mounting.

How do you open the under dash fuse box? ›

To remove the fuse box lid, put your finger in the notch on the lid, pull it toward you, and take it out of its hinges. The fuses are located in five fuse boxes. The interior fuse boxes are located under the dashboard on the driver's and passenger's side.

How do you tell if AC fuse is blown? ›

If you think your air conditioner has blown a fuse, the first sign you'll notice is that the outside AC unit is inoperable. The best way to check for a blown fuse is by using a voltmeter. Be warned — you are working with live electricity and should use extreme caution when troubleshooting your system.

Where are the two fuse panels located? ›

There are two fuse boxes, one located near the engine or under the hood and the other is located near the driver seat. The car fuse box under the hood protects engine components including engine control unit (ECU), cooling fan, ABS motor and battery.

How do I know if my engine compartment fuse is blown? ›

No Response from Accessories: Accessories such as the cigarette lighter, GPS, or phone charger not working are tell-tale signs of a blown fuse. Visual Inspection: Removing the fuse and inspecting it can also help. A blown fuse usually has a broken wire or a burnt appearance inside.

What is a Class C fuse? ›

What is a class CC fuse? A UL Class CC fuse is 600 volt AC current limiting rejection type fuse. The type CC fuse is offered in fast acting time delay and dual element time delay versions. Class CC fuses have ampere ratings from 1/10 to 30 amps and an interrupting rating of 200,000 amps.

Which fuse controls my AC? ›

Usually, AC units use “TR”-type fuses to ensure safe operation.

What is a class K fuse? ›

The UL Class K5 fuse is a non-current limiting fuse that has an interrupting rating of 50,000 amps. It is a one time fuse that does not have any appreciable degree of time delay. Class K5 fuses are rated at either 250 volts AC or 600 volts.

How do you open a fuse box in an engine compartment? ›

You will often find tabs on the side of the fuse box cover that need to be pressed in to release them. While most vehicles have the battery in the engine bay, some may not. In such cases, check the trunk for both the battery and the fuse box.

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