Mercedes 205 fuse and relay

Mercedes W205 is the fourth generation of C-class cars of the German automaker Mercedes-Benz, which was produced in 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 with various body options: S205 wagon, w205 sedan, c205 coupe and A205 convertible. During this time, the model has been restyled. In this publication you can find a description of the fuses and relays Mercedes w205 with box diagrams, photos – examples of performance and locations. Select the fuse responsible for the cigarette lighter.

Mercedes w205

 

The execution of the boxes and the purpose of the elements in them may differ from those presented and depend on the year of manufacture and the level of equipment of your car.

Passenger compartment

Box in panel

In the cabin, the fuse and relay box is located on the left side of the dashboard (on the parent side) behind a protective cover.

location 2

Diagram

Diagram

Assignment

20050A Front control unit SAM
20140A Front SAM control unit
2025A Alarm Siren
A205: EDW/Towing protection/Interior monitor control unit
20320A Valid for vehicles with gearbox 716: Electric steering column lock control unit
2045A Diagnostic connector
2057.5A Electronic ignition lock control unit
2065A Analog clock
20715A Heating, ventilation and air conditioning control unit
2087.5A Instrument cluster
2095A Air conditioning control panel
Upper Control Panel Control Box
2105A Signals from the steering column electronic module control unit
21125A AMG: Signals from the ESP control unit
2125A Antenna switch for telephone and auxiliary heater
2135A Signals from the ESP control unit
21430A AMG: Electric parking brake control unit
215Reserve
2167.5A Glove box light
2175A Japan: DSRC toll data transmission control unit
2187.5A Supplemental Restraint System control unit
2195A Weight Sensing System control unit
220Reserve
Relay
FRelay terminal 15R

Power fuse box

A high power fuse box can be installed at the feet of the front passenger.

power fuse box

Diagram

Diagram 1

Designation

  1. Engine compartment power fuse box
  2. 150A Hybrid: Additional battery relay for ECO Start-Stop function
  3. 40A Fan regulator
  4. Reserve
  5. 150A Vehicles with diesel engine: Electrical auxiliary heater
  6. 80A Right A-pillar fuse box
  7. 150A Rear fuse and relay module
  8. Reserve
  9. Reserve
  10. 60A Valid for vehicles with 725 gearbox: Fully integrated gearbox control unit 100A Hybrid with 724 gearbox: Fully integrated gearbox control unit
  11. Reserve
  12. 40A Rear fuse and relay module
  13. 50A Right A-pillar fuse box
  14. F32/4k2 – Closed current breaking relay

Location of additional elements

location

  • F96 – Fuses terminal 30 additional battery
  • F96 / 1 – Fuses terminal 87 damper in the exhaust tract

Box under the panel

Under the instrument panel, on the passenger side, on the rack behind the protective cover, there is another fuse box.

location of fuse box Mercedes 213

Photo – example

Photo - example

Diagram

Diagram 2

Allocation

3015A Hybrid: Ignition fuse (F63) via high voltage cut-off device
30230A Front right door control unit
30330A Rear left door control unit
30420A Valid for vehicles with gearbox 722: Servo drive module for automatic gearbox for DIRECT SELECT system
30530A Driver’s seat control unit
Driver’s seat heating control unit (up to 05/31/2015)
Front seat heating control unit (from 06/01/2015)
30630A Front passenger seat control unit
Front passenger seat heating control unit (until 05/31/2015)
Front seat heating control unit (from 06/01/2015)
307Reserve
30830A USA: Electrical plug connection for the Elektric-Brake-Control function
30910A Emergency call system control unit
5A HERMES control unit
Telecom Services Communication Module
310Reserve
31110A Electronic controller for additional rear fan
31210A Ceiling Control Panel
31310A Hybrid: DC voltage converter control unit
314Reserve
3155A Transmission control unit
On vehicles with diesel engine: CDI control unit
On vehicles with petrol engine: ME control unit
3167.5A Supplemental Restraint System control unit
31730A Panoramic sliding sunroof control module (panoramic sliding sunroof)
Sliding sunroof control module (sliding sunroof)
31820A Auxiliary heater control unit
3195A Hybrid: High voltage electric heater system
32015A AIR BODY CONTROL
3215A Japan: DSRC Toll Communications Control Unit
32220A Head Unit
3235A Parking assistance control unit
MF1/17.5A Audio/COMAND Display
Audio fan motor (COMAND APS)
MF1/27.5A Mono multifunction camera
Multifunctional stereo camera
MF1/37.5A Rain and light sensor with additional functions
Ceiling Control Panel
MF1/47.5A Driver’s seat control unit
Driver’s seat heating control unit (up to 05/31/2015)
Front seat heating control unit (from 06/01/2015)
MF1/57.5A Front passenger seat control unit
Front passenger seat heating control unit (until 05/31/2015)
Front seat heating control unit (from 06/01/2015)
MF1/67.5A Signals from the steering column electronic module control unit
MF2/15A Front left seat belt reversible pretensioner
MF2/25A Audio control panel/ COMAND
Touch panel (Audio 20 or COMAND APS radio)
MF2/35A Front right seat belt reversible pretensioner
MF2/45A Head-up display
MF2/55A Media connection module
MF2/65A Hybrid: Electric air conditioner compressor
MF3/15A Front SAM terminal 30g readback wire
MF3/25A Radar control unit
MF3/3Reserve
MF3/45A Button block on the instrument panel on the driver’s side
MF3/55A Rear air conditioning control panel
MF3/65A Tire pressure monitoring control unit

Engine compartment

Fuse and relay box

In the engine compartment, under the hood on the left side is the main fuse and relay box.

photo

Diagram

Diagram 3

Appointment

10040A Hybrid: Vacuum pump
10115A Except AMG: Cable termination terminal 87/2
20A AMG: Cable termination terminal 87/2
10220A Except AMG: Cable termination terminal 87/1
25A AMG: Cable termination terminal 87/1
10315A Except AMG: Cable termination terminal 87/4
20A AMG: Cable termination terminal 87/4
10415A Except AMG: Cable termination terminal 87/3
20A AMG: Cable termination terminal 87/3
10515A Valid for vehicles with reduction gear 722.9 (except 722.930): Control unit for auxiliary transmission oil pump
106Reserve
10760A Valid for engine 274.9: Electric coolant pump
10820A LED static headlights:
Front right headlight
High Performance LED or dynamic LED headlights:
Front left headlight
Front right headlight
10930A Wiper motor
11020A LED static headlights:
Front left headlight
High Performance LED or dynamic LED headlights:
Front left headlight
Front right headlight
11130A Starter
11215A Hybrid: Accelerator position sensor
113Reserve
11440A Compressor AIRMATIC
11515A Horn left and horn right
116Reserve
117Reserve
1185A Hybrid: Signals from the ESP control unit
11915A Cable termination terminal 87 C2
1205A Except AMG: Cable termination terminal 87 C1
15A AMG: Cable termination terminal 87 C1
1215A Signals from the ESP control unit
1225A CPC Relay
123Reserve
124Reserve
1255A Front SAM control unit
1265A Transmission control unit
On vehicles with diesel engine: CDI control unit
On vehicles with petrol engine: ME control unit
1275A Hybrid: Voltage drop limiter
1285A Front left headlight and outdoor light switch
12930A Hybrid: Starter terminal 50 relay
129A30A Hybrid: Starter terminal 50 relay
Relay
GTerminal 15 relay, engine compartment
HStarter terminal 50 relay
IHybrid: Vacuum pump relay (+)
JCPC relay
KValid for vehicles with gearbox 722.9 (except 722.930): Oil pump relay
LHorn relay
MWiper heater relay
NRelay terminal 87M
OHybrid: Starter terminal 15 relay
PValid for engine 274.9: Coolant pump relay
QHybrid: Vacuum pump relay (-)
RAIRMATIC relay

Power fuse box

Photo example

photo power fuse box

Type 1

Diagram

Type 1

Type 2

Diagram

Type 2

Decoding

1Reserve
2100A On vehicles with diesel engine: Glow plug output stage module
360A Engine fuse and relay module
4Vehicle battery connector
5150A Engine fuse and relay module
6125A Fuse and relay module, left
780A Fan motor
8125A Electric power steering control unit
9150A Fan motor (1000W)
10200A Power fuse box in passenger compartment
11Reserve
12Hybrid: Power electronics control unit
USA: Catalyst heater control unit
13400A Generator
C1Hybrid: Trip Relay
C2Hybrid: Terminal 31
C3/140A Signals from the ESP control unit
C3/260A Signals from the ESP control unit
F32/3k1Isolating relay

Luggage compartment

Another fuse and relay box is located in the trunk under a protective cover.

photo 4

Type 1

Diagram

lc type 1

Type 2

Diagram

lc type 2

Assignment

40025A AdBlue® control unit
40115A AdBlue® control unit
40220A AdBlue® control unit
40330A Before 11/30/2015: Switch for partially electric seat adjustment, front passenger seat
25A From 12/01/2015: Switch for partially electric seat adjustment, front passenger seat
40430A Before 11/30/2015: Driver’s seat partially electric adjustment switch
25A From 12/01/2015: Driver’s seat partially electric adjustment switch
405Reserve
40630A Front left door control unit
407Reserve
40830A W205, S205, V205: Rear right door control unit
A205, C205: Rear compartment systems control unit
409Reserve
41015A Remote heater radio remote control receiver
41130A Front left seat belt reversible pretensioner
4127.5A Hybrid: Battery management system control unit
4135A Trunk lid actuator control unit
4145A Tuner module (TV tuner, digital radio (DAB)) or SIRIUS satellite radio)
4155A Camera cover control unit
Air Aroma Generator
4167.5A Antenna Amplifier/ Mobile Phone Compensator
Mobile phone contact board
4175A 360° Camera Control Unit
Rear View Camera
4185A Seat heating control unit, rear
AIRSCARF system control unit
4195A Lumbar support adjustment control unit for front passenger seat
4205A Lumbar adjustment control unit for driver’s seat
421Reserve
422Reserve
4235A Speaker amplifier control unit
42415A Valid for vehicles with engine 276: Motorsound control unit
425Reserve
426Reserve
427Reserve
428Reserve
429Reserve
430Reserve
43125A Multifunctional control unit for special vehicles
43225A Multifunctional control unit for special vehicles
43315A Trailer recognition control unit
43415A Trailer recognition control unit
30A AMG: Electric parking brake control unit
43525A Trailer recognition control unit
25A AMG: Electronic differential control unit
43615A Trailer recognition control unit
43725A Trailer recognition control unit
43830A AC/DC converter control unit
4395A Taximeter
Taximeter in interior rear-view mirror
25A A205: Rear compartment systems control unit
44030A Seat heating control unit, rear
AIRSCARF system control unit
44130A AIRSCARF system control unit
44225A Fuel pump control unit
44330A Front right seat belt reversible pretensioner
44415A Electric plug connection tablet computer
44515A S205: Socket in trunk
44615A Cigarette lighter with front ashtray illumination (socket in saloon)
44715A 12V socket in the center console, rear right
44810A Valid for vehicles with gearbox 722, 725: Park lock capacitor
4495A Valid for vehicles with engine 626: Fuel filter element with integrated heating
AMG: Electrical parking brake control unit
4505A Rear control unit SAM
4515A Fuel pump control unit
AdBlue® control unit
4525A Rear bumper integrated radar sensor outside right
Integrated radar sensor rear bumper outside left
Radar sensor in the rear bumper in the center
Radar sensor in the rear bumper on the right outside
Radar sensor in the rear bumper on the left outside
4535A Radar sensor in front bumper, left
Radar sensor in front bumper, right
COLLISION PREVENTION ASSIST control module
4547.5A Valid for vehicles with gearbox 722: Control unit for fully integrated automatic transmission control
5A Package for driving schools:
Footwell lighting switch
Pedal control sensor
Valid for type 253: AdBlue® control unit
4555A AC/DC converter control unit
4565A Far field radar sensor front
Electrical control module DISTRONIC
4575A Hybrid:
Power electronic equipment control unit
Battery management system control unit
AMG:
Electronic differential control unit
Active engine mount control unit
4585A Module for keyless opening of the trunk lid under the rear bumper
4595A Hybrid: Charger
AMG: AMG chassis control unit
46010A Control unit kEyLESS-GO
4615A Antenna amplifier FM 1, AM, CL and KEYLESS-GO
46240A Speaker amplifier control unit
46330A W205, S205, V205: Heated rear window (R1) via rear window anti-interference capacitor
A205, C205: Electrical connector for soft top/vehicle interior
46440A Trunk lid actuator control unit
Tailgate Actuator Control Module
46540A Rear control unit SAM
46640A Rear control unit SAM
46740A Valid for vehicles with 626 engine: Fuel filter element with integrated heating
A205: Rear compartment systems control unit
Relay
SSalon terminal 15 relay
THeated rear window relay
U2nd row cup holder and socket relay
ВAdBlue® relay
XRelay for refrigerator box and sockets of the 1st row of seats / trunk
YBackup relay
ZR1Valid for vehicles with engine 626: Fuel filter heating relay
ZR2Backup relay
ZR3Backup relay

Fuses 445, 446 and 447 are responsible for the cigarette lighters.

If you have any questions – write in the comments.

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