Mercedes-Benz W222 is the sixth generation of the S-class series of the German brand Mercedes-Benz, which was produced in 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020 with the designation S300, S05, S350, S05 S560, S600, S650, S63, S65 AMG 4MATIC in the body of the C217 coupe and the A217 convertible . During this time, the model has undergone restyling. A separate series of Mercedes w222 is also known under the Mercedes-Maybac brand as part of the revival of the Maybach brand. In this publication you will find a description of the fuses and relays of the Mercedes 222 with block diagrams and their locations. We will highlight the cigarette lighter fuse.

The design of the blocks and the purpose of their elements may differ from the one presented and depends on the year of manufacture and the level of electrical equipment; check the information with your diagrams.

Example of a brochure with a label

Blocks in the cabin

Unit in the instrument panel

A fuse and relay block is installed on the left side of the dashboard behind a protective cover.

Scheme

Description

20040A Front SAM control unit
20140A Front SAM control unit
2025A Alarm siren
20330A W222: Driver’s seat heater control unit.
2045A Diagnostic connector
2057.5A Electronic ignition lock control unit
2065A Analog clock
20720A Climate control unit
2087.5A Instrument panel
2095A Front climate control unit
21010A Steering column tube module control unit
211Spare
212Spare
21325A Electronic stabilization system control unit
214Spare
215Spare
216Spare
2175A Japanese version: special short-range communication system control unit
2185A Auxiliary restraint system control unit
2195A Weighing System Control Unit (WSS)
Front passenger seat occupancy recognition and ACSR
22015A Реле MAGIC VISION CONTROL
Relay
DРеле MAGIC VISION CONTROL
ANDBackup relay
F15R Circuit Relay

Fuse box under the panel

There is a fuse box on the right pillar under the dashboard.

Photo example

Scheme

Marking

3015A Mirror taximeter
30230A Front right door control unit
30330A W222: Left rear door control unit.
C217, A217: Rear control unit
30430A W222: Rear right door control unit.
C217, A217: Rear control unit
30530A Driver seat control unit
30630A Front passenger seat control unit
30720A W222: Intelligent servo module for DIRECT SELECT
30A C217, A217: Driver’s seat heater control unit.
30830A Front passenger seat heater control unit
3095A Emergency call control unit
Telematics Services Communication Module
HERMES control unit
31025A Stationary heater control unit
31110A Rear fan motor
31210A Ceiling control panel control unit
31310A Hybrid and Hybrid Plus: power electronics control unit
3147.5A A217: Anti-theft alarm (designation by agreement)
31510A Transmission control unit
Valid for gasoline engine: ME-SFI control unit
Valid for engines 642, 651: CDI control unit
316Spare
31730A W222: Panoramic sliding sunroof control unit.
C217, A217: MAGIC SKY CONTROL control unit
31815A COMAND audio/display
31930A Panoramic sliding sunroof control unit
C217, A217: Panoramic roof blind control module.
32015A Active Body Control control unit
AIRmatic control unit (in fact, except for Active Body Control)
32120A C217, A217: Intelligent servo module for DIRECT SELECT
32215A COMAND control unit
3237.5A Additional restraint system control unit
MF1/17.5A Japan version: special short-range communication system control unit
MF1/27.5A Monochrome Multifunction Camera
Multifunctional stereo camera
MF1/37.5A Rain/light sensor with additional functions
Ceiling control panel control unit
MF1/47.5A Driver’s seat control unit
MF1/57.5A Front passenger seat control unit
MF1/67.5A Steering column tube module control unit
MF2/15A Perfume Spray Generator
MF2/25A Audio control panel / COMAND
5A Touch panel
MF2/35A Electronic stabilization system control unit
MF2/45A Head-up display
MF2/55A Hybrid and Hybrid Plus: electric refrigerant compressor
MF2/6Spare
MF3/15A SAM Front Control Unit
MF3/25A Radar sensor control unit
MF3/35A COMAND fan motor
MF3/45A Driver’s side instrument panel button group
Central instrument panel button group
MF3/55A Rear air conditioning control unit
MF3/65A from 01.06.2016: Antenna switch for telephone and stationary heater

Power fuse block

It is also installed under the panel, under the interior trim, at the front passenger’s feet.

Appointment

I7125A Fuse block in the right front pillar
I2125A Left Fuse and Relay Module
C2Spare
I8Spare
I9Spare
I3Connecting the no-load current cut-off relay
C140A Blower regulator
I140A Electronic stabilization system control unit
I4Spare
I660A Rear fuse and relay module
I560A Fuse block in the right front pillar
F32/4k2Quiescent current tripping relay

Blocks in the trunk

Fuse and relay block

In the luggage compartment on the right side is the main unit with fuses and relays.

Scheme

Transcript

  1. Connection of circuit 30 “E1”
  2. Connecting the 30g “E2” circuit
40010A Parking system control unit (Active Parking Assist or 360 degree code camera)
4015A Trunk lid control unit
4027.5A Rear entertainment control unit
403Spare
4047.5A Armrest heater control unit
4057.5A Sound system amplifier control unit
Front left door tweeter control unit
Front right door tweeter control unit
406Spare
407Spare
4085A Tuner Block
4095A 360° Camera Control Unit
Rear view camera
4105A Camera cover control unit
4115A Tire pressure sensor control unit
4127.5A Rear seat heater control unit
41310A Left rear display
Right rear display
4147.5A Rear Cellular Phone System Antenna Amplifier/Compensator
Mobile phone holder on the back
Mobile phone contact plate on the back
Telephone module with Bluetooth (SAP profile)
415Spare
416Spare
41720A Trailer recognition control unit
418Spare
419Spare
42030A DC/AC converter control unit
42130A Pneumatic multi-circuit seat pump
42230A W222: Rear right door control unit.
423Spare
42440A Rear SAM control unit
425Spare
42630A Woofer Amplifier
42720A Armrest heater control unit
42815A Trailer recognition control unit
42910A Rear cup holder
430Cigarette lighter with ashtray illumination, rear
15A Cigarette lighter with rear center console illumination
Socket on the center console on the left, rear, 12V (ashtray package / smoking package)
43115A Refrigerator in the back of the backrest
43210A Rear SAM control unit
43325A AdBlue control unit
43415A AdBlue control unit
43520A AdBlue control unit
43620A Rear cup holder
437Spare
4387.5A C217 with engine 157: Right exhaust flap drive motor.
4397.5A C217 with engine 157: Left exhaust flap drive motor.
440Spare
441Spare
442Spare
443Spare
444Spare
4455A Stationary heater radio control receiver
4465A Antenna amplifier FM 1, AM, CL [ZV] and KEYLESS-GO
4477.5A Hybrid: Battery Management System Control Unit
448Spare
449Spare
450Spare
45115A Trailer socket
4525A Rear bumper radar sensor left
Rear bumper radar sensor, right
Rear bumper central radar sensor
4535A Front bumper radar sensor left
Front bumper radar sensor, right
COLLISION PREVENTION ASSIST control unit
4545A AdBlue control unit
Fuel system control unit
45515A Fully integrated transmission control unit
456Spare
4577.5A Valid for lithium-ion battery: starter battery capacitor
458Spare
459Spare
46015A Front cigarette lighter with ashtray illumination
46115A Right rear center console socket 12V
12V socket
DC/AC converter control unit
46215A Luggage compartment socket
463Spare
46420A Trailer recognition control unit
46530A Electric parking brake control unit
46630A Front left door control unit
46710A KEYLESS-GO control unit
46830A Electric parking brake control unit
46925A Fuel system control unit
47030A Rear left seat heater control unit
Rear seat heater control unit
47130A Rear right seat heater control unit
47230A C217, A217: Rear control unit
47320A Trailer recognition control unit
47540A Sound system amplifier control unit
47640A Sound system amplifier control unit
47740A Active belt buckle control unit
C217, A217: Rear control unit
47830A Left rear seat control unit
47940A Active belt buckle control unit
48030A Right rear seat control unit
4815A Reversible front left emergency tension retractor
4825A W222: MAGIC SKY CONTROL control unit
7.5A C217, A217: MAGIC SKY CONTROL control unit
4835A Reversible emergency retractor mechanism front right
4847.5A Right rear seat control unit
Left rear seat control unit
4855A Active belt buckle control unit
48610A Hybrid:
Battery management system control unit
Power electronics control unit
4875A Electric parking brake control unit
4885A Rear SAM control unit
4895A Long-range radar sensor
4905A Pneumatic multi-seat pump
49140A Trunk lid control unit
49240A Reversible emergency retractor mechanism front right
493Spare
49440A Rear SAM control unit
49540A Heated rear window
49640A Reversible front left emergency tension retractor
Relay
SRelay circuit 15 car interior
TRear window heater relay
IN2nd row of seats cup holder and socket relay
InAdBlue relay
INRelay circuit 15R
XRefrigerator and 1st row/trunk socket relay
ANDSpare relays

Fuses 430, 460, and 461 are responsible for the operation of cigarette lighters.

Power fuse block

Another power fuse block is installed on the back of the rear seat next to the amplifier.

Description

I3Spare
I2125A Windshield heater control unit
I77.5A Hybrid: High Voltage Trip Device
I4150A Rear Fuse and Relay Module
I6200A Additional battery ECO start/stop
I710A Additional battery ECO start/stop
SAM front control unit
Electronic ignition lock control unit
I1Spare
I11Spare
I710A SAM Front Control Unit
I8ECO start/stop function connecting an additional battery relay
I5Hybrid: high-voltage pyroelectric fuse triggered by the auxiliary restraint system control unit
I9Connecting the isolation relay
F33k1Relay isolation
F33k2ECO start/stop function additional battery relay

Some additional protection elements may also be attached to the battery terminals.

Blocks under the hood

Under the hood of a Mercedes w222, there are 2 fuse blocks (left and right). To access them, you need to remove the protective cover.

Fuse and relay block

Located in the left side of the engine compartment.

Scheme

Marking

10040A Hybrid: Vacuum Pump
10115A Coupling, circuit 87/2
10220A Coupling, circuit 87/2
10315A Chain coupling 87M4
10415A Chain coupling 87M3
10515A For gearbox 722.9: Auxiliary transmission oil pump control unit
10625A Wiper parking heater
10760A Valid for engines 277, 279: Starter/air pump electrical connection
10820A Valid for SAE dynamic LED headlight for right-hand traffic or dynamic LED headlight:
Front left lamp unit
Front right lamp unit
Indeed, without the SAE dynamic LED headlight for right-hand traffic or the dynamic LED headlight:
Front right lamp unit
10930A Wiper motor
11020A Valid for dynamic LED headlight with SAE code for right-hand traffic or dynamic LED headlight:
Front left lamp unit
Front right lamp unit
Indeed, without the SAE dynamic LED headlight for right-hand traffic or the dynamic LED headlight:
Front left lamp unit
11130A Starter
1125A Motor Fuse and Relay Module
113Spare
11440A AIRmatic Compressor
11515A Left horn fanfare
Right horn fanfare
1165A Hybrid: Vacuum Pump Relay
117Spare
1185A Hybrid: electronic stabilization control unit
11915A Chain coupling 87/C2
1207.5A Chain coupling 87/C1
1215A Electronic stabilization system control unit
1225A Hybrid: HYBRID relay
1235A Night View Assist Control Unit
1245A Hybrid: electrical connector for car interior and engine compartment
1255A SAM Front Control Unit
1265A Transmission control unit
Valid for diesel engine: CDI control unit
Valid for gasoline engine: ME-SFI control unit [ME]
127Spare
1285A Outdoor light switch
129A30A Hybrid: Starter Circuit Relay 50
129B30A Indeed, except for hybrid: starter circuit relay 50
Relay
GCircuit 15 relay in the engine compartment
HStarter circuit relay 50
IBrake vacuum pump relay
JHybrid: HYBRID relay
KTransmission oil pump relay
LHorn relay
MWiper parking heater relay
NCircuit relay 87M
AboutIndeed, except for the hybrid: starter circuit 15 relay
PSecondary air injection relay
QHybrid: Vacuum Pump Relay
RAIRmatic relay

Power fuse block

Installed in the right side of the engine compartment.

Appointment

  1. Connection, circuit 30 “B1”
  2. Connection, circuit 30 without locking “B2”
M3500A Hybrid: Electric car
500A Indeed, except Hybrid: Generator
M1Hybrid: electric car
Indeed, except for Hybrid: Starter
MR5100A Electric power steering control unit
MR2100A Fan Motor
M4100A Hybrid: Fully integrated transmission control unit
I1Spare
M2150A Valid for diesel engine: glow output stage
MR160A Engine Fuse and Relay Module
MR3Spare
MR4150A Valid for engines 277, 279: Fan motor
I2Spare
Mercedes w222 fuses and relays. Mercedes w222 fuse diagram.