Fuses and relay Mercedes-Benz S-Class
In this article, we will be looking at the sixth generation Mercedes-Benz S-Class (W222, C217, A217) available from 2014 to present. Here you will find fuse block diagrams for 300, 350, 400, 450, 500 and 550 Mercedes-Benz S560, S600, S650, S63, S65, S2014, S2015, S2016, S2017, S2018, S2019, SXNUMX, SXNUMX, get information about the location of the fuse panel inside the vehicle and know the purpose of each fuse (fuse location) and relay.
Fuse box on the dashboard
Fuse box location
The fuse box is located on the left side of the instrument panel, behind the cover.
Fuse block diagram
Location of fuses and relays in the instrument panel
| number | Fuse function | amplifier |
|---|---|---|
| 200 | Front SAM control unit | 40 |
| 201 | Front SAM control unit | 40 |
| 202 | alarm siren | 5 |
| 203 | W222 : Driver's seat heating control unit. | 30 |
| 204 | Diagnostic connector | 5 |
| 205 | Electronic ignition lock control unit | 7,5 |
| 206 | Analog clock | 5 |
| 207 | Climate control unit | twenty |
| 208 | Dashboard | 7,5 |
| 209 | Front climate control unit | 5 |
| 210 | Steering column tube module control unit | ten |
| 211 | Replacement | - |
| 212 | Replacement | - |
| 213 | Control unit for electronic stabilization system | 25 |
| 214 | Replacement | - |
| 215 | Replacement | - |
| 216 | Replacement | - |
| 217 | Japanese version: special control unit for short range communication system | 5 |
| 218 | Secondary restraint system control unit | 5 |
| 219 | Weighing System Control Unit (WSS) Front passenger seat occupied recognition and ACSR | 5 |
| Relay | ||
| Д | MAGIC VISION CONTROL relay | |
| Me | Standby relay | |
| Ф | Relay circuit 15R |
Fuse box in passenger footwell
Fuse box location
Fuse block diagram
Assignment of the fuses in the front passenger footwell
| number | Fuse function | amplifier |
|---|---|---|
| one | Connecting cable 30 "E1" | |
| two | Loop connection 30 g “E2” | |
| 301 | Mirror taximeter | 5 |
| 302 | Right front door control unit | 30 |
| 303 | W222: left rear door control unit C217, A217: rear control unit | 30 |
| 304 | W222: right rear door control unit C217, A217: rear control unit | 30 |
| 305 | Driver's seat control unit | 30 |
| 306 | Front passenger seat control unit | 30 |
| 307 | W222: Intelligent Servo Module for DIRECT SELECTION | twenty |
| 307 | C217, A217: Heated driver's seat control unit. | 30 |
| 308 | Front passenger seat heating control unit | 30 |
| 309 | Emergency call system control unit Telematic services communication module HERMES control unit | 5 |
| 310 | Stationary heating control unit | 25 |
| 311 | Rear fan motor | ten |
| 312 | Upper control panel control box | ten |
| 313 | Hybrid and Hybrid Plus: power electronic control unit | ten |
| 314 | A217: Anti-theft alarm (designation by agreement) | 7,5 |
| 315 | Transmission control unit Valid for petrol engines: ME-SFI control unit Valid for engines 642, 651: CDI control unit | ten |
| 316 | Replacement | - |
| 317 | W222: Panoramic sliding roof control unit C217, A217: MAGIC SKY CONTROL control unit | 30 |
| 318 | AUDIO/SCREEN COMMAND | fifteen |
| 319 | Panoramic sunroof control unit C217, A217: Panoramic sunroof control unit | 30 |
| 320 | Block Active Body Control AIRmatic control unit (valid except for Active Body Control) | fifteen |
| 321 | C217, A217: Intelligent Servo Module for DIRECT SELECTION | twenty |
| 322 | COMMAND control unit | fifteen |
| 323 | Secondary restraint system control unit | 7,5 |
| MF1/1 | Japan version: special control unit for short range communication system | 7,5 |
| MF1/2 | Multifunctional monochrome camera Multifunctional stereo camera | 7,5 |
| MF1/3 | Rain/light sensor with additional functions Upper control panel control box | 7,5 |
| MF1/4 | Driver's 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 | Perfume Atomizer Generator | 5 |
| MF2/2 | Sound control panel / COMAND Touchpad | 5 |
| MF2/3 | Control unit for electronic stabilization system | 5 |
| MF2/4 | Projection screen | 5 |
| MF2/5 | Hybrid and Hybrid Plus: Electric refrigerant compressor | 5 |
| MF2/6 | Replacement | - |
| MF3/1 | Front SAM control unit | 5 |
| MF3/2 | Radar control unit | 5 |
| MF3/3 | COMMAND fan motor | 5 |
| MF3/4 | Button block on the dashboard on the driver's side Button block central dashboard | 5 |
| MF3/5 | Rear air conditioner control unit | 5 |
| MF3/6 | from 01.06.2016/XNUMX/XNUMX: aerial switch for telephone and central heating | 5 |
Luggage compartment fuse box
Fuse box location
It is located on the right side of the trunk, behind the cover.
Fuse block diagram
Location of fuses and relays in the trunk
| number | Fuse function | amplifier |
|---|---|---|
| one | Connecting cable 30 "E1" | |
| two | Loop connection 30 g “E2” | |
| 400 | Parking System Control Unit (Active Parking Assist or 360 Degree Code Camera) | ten |
| 401 | Rear door control unit | 5 |
| 402 | Rear entertainment control box | 7,5 |
| 403 | Replacement | - |
| 404 | Armrest heating control unit | 7,5 |
| 405 | Sound system amplifier control unit Control unit front left door tweeter Tweeter control unit right front door | 7,5 |
| 406 | Replacement | - |
| 407 | Replacement | - |
| 408 | Tuner block | 5 |
| 409 | Camera control unit Camera 360 back view | 5 |
| 410 | Camera Cover Control Unit | 5 |
| 411 | Tire pressure sensor control unit | 5 |
| 412 | Rear seat heating control unit | 7,5 |
| 413 | Left rear window Right rear window | ten |
| 414 | Antenna Amplifier/Cell Phone Rear System Compensator Rear stand for mobile phone Rear contact plate for mobile phone Bluetooth Phone Module (SAP Profile) | 7,5 |
| 415 | Replacement | - |
| 416 | Replacement | - |
| 417 | Trailer detection control unit | twenty |
| 418 | Replacement | - |
| 419 | Replacement | - |
| 420 | AC/DC converter control unit | 30 |
| 421 | Pneumatic pump with multi-circuit seat | 30 |
| 422 | W222: Right rear door control unit. | 30 |
| 423 | Replacement | - |
| 424 | Rear SAM control unit | 40 |
| 425 | Replacement | - |
| 426 | LF amplifier | 30 |
| 427 | Armrest heating control unit | twenty |
| 428 | Trailer detection control unit | fifteen |
| 429 | rear cup holder | ten |
| 430 | Cigarette lighter with backlit ashtray Illuminated cigarette lighter at the rear of the center console 12V socket at the left rear of the center console (ashtray bag/smoker bag) | fifteen |
| 431 | Refrigerator at the back | fifteen |
| 432 | Rear SAM control unit | ten |
| 433 | Adblue control unit | 25 |
| 434 | Adblue control unit | fifteen |
| 435 | Adblue control unit | twenty |
| 436 | rear cup holder | twenty |
| 437 | Replacement | - |
| 438 | C217 with motor 157: Right exhaust flap motor. | 7,5 |
| 439 | C217 with motor 157: Left exhaust flap motor. | 7,5 |
| 440 | Replacement | - |
| 441 | Replacement | - |
| 442 | Replacement | - |
| 443 | Replacement | - |
| 444 | Replacement | - |
| 445 | Stationary radio control receiver for heating | 5 |
| 446 | Antenna amplifier FM 1, AM, CL [ZV] and KEYLESS-GO | 5 |
| 447 | Hybrid: Battery Management System Control Unit | 7,5 |
| 448 | Replacement | - |
| 449 | Replacement | - |
| 450 | Replacement | - |
| 451 | Jack | fifteen |
| 452 | Radar sensor rear bumper radar sensor left rear right bumper radar sensor central rear bumper | 5 |
| 453 | Radar sensor front bumper, radar sensor in front left bumper, COLLISION PREVENTION ASSIST control unit | 5 |
| 454 | Ad Blue control unit Fuel system control unit | 5 |
| 455 | Fully integrated transmission control unit | fifteen |
| 456 | Replacement | - |
| 457 | Applies to lithium-ion batteries: starter battery capacitor | 7,5 |
| 458 | Replacement | - |
| 459 | Replacement | - |
| 460 | Front cigarette lighter with ashtray illumination | fifteen |
| 461 | Right Rear Console Outlet 12V 12V socket AC/DC converter control unit | fifteen |
| 462 | Boot plug | |
| 463 | Replacement | |
| 464 | Trailer detection control unit | twenty |
| 465 | Electric parking brake control unit | 30 |
| 466 | Left front door control unit | 30 |
| 467 | Control unit KEYLESS-GO | ten |
| 468 | Electric parking brake control unit | 30 |
| 469 | Fuel system control unit | 25 |
| 470 | Rear left seat heating control unit Heating control unit backseat | 30 |
| 471 | Right rear seat heater | 30 |
| 472 | C217, A217: rear control unit | 30 |
| 473 | Trailer detection control unit | twenty |
| 475 | Sound system amplifier control unit | 40 |
| 476 | Sound system amplifier control unit | 40 |
| 477 | Active belt buckle control unit C217, A217: rear control unit | 40 |
| 478 | Rear left seat control unit | 30 |
| 479 | Active belt buckle control unit | 40 |
| 480 | Rear right seat control unit | 30 |
| 481 | Reversible left front emergency tension retractor | 5 |
| 482 | W222: MAGIC SKY CONTROL control unit | 5 |
| 482 | C217, A217: MAGIC SKY CONTROL control unit | 7,5 |
| 483 | Reversible Right Front Emergency Idler Retractor | 5 |
| 484 | Rear right seat control unit Control unit left rear seat | 7,5 |
| 485 | Active belt buckle control unit | 5 |
| 486 | Hybrid: battery management system control unit, power electronics control unit | ten |
| 487 | Electric parking brake control unit | 5 |
| 488 | Rear SAM control unit | 5 |
| 489 | Long Range Front Radar Sensor | 5 |
| 490 | Pneumatic pump with multi-circuit seat | 5 |
| 491 | Rear door control unit | 40 |
| 492 | Reversible Right Front Emergency Idler Retractor | 40 |
| 493 | Replacement | - |
| 494 | Rear SAM control unit | 40 |
| 495 | Rear window defogger | 40 |
| 496 | Reversible left front emergency tension retractor | 40 |
| Relay | ||
| Yes | Relay circuit 15 inside the car | |
| Т | Rear heater relay | |
| You | 2nd row seat cup holders and relay connectors | |
| В | blue relay advertising | |
| Tues | Relay circuit 15R | |
| X | Fridge relay and connectors in 1st row/trunk | |
| Д | Spare relay |
Engine compartment fuse box
Fuse box location
Located in the engine compartment (left), under the hood.
Fuse block diagram
Purpose of fuses and relays in the engine compartment
| number | Fuse function | amplifier |
|---|---|---|
| 100 | Hybrid: vacuum pump | 40 |
| 101 | Coupling, circuit 87/2 | fifteen |
| 102 | Coupling, circuit 87/2 | twenty |
| 103 | Chain coupling 87M4 | fifteen |
| 104 | Chain hitch 87M3 | fifteen |
| 105 | For gearbox 722.9: Transmission auxiliary oil pump control unit | fifteen |
| 106 | Parking Wiper Heater | 25 |
| 107 | Valid for engines 277, 279: Starter/air pump electrical connection | 60 |
| 108 | Valid for SAE Dynamic Right Hand Drive LED Headlight or Dynamic LED Headlight: Left Headlight, Right Headlight. Valid without SAE Dynamic LED Headlights for Right Hand Driving or Dynamic LED Headlights. :: Block of the front right lamp | twenty |
| 109 | wiper motor | 30 |
| 110 | Valid for dynamic LED headlight with SAE code for right-hand traffic or dynamic LED headlight: left front headlight, right front headlight. Valid without SAE Dynamic LED Headlights for Right Hand Driving or Dynamic LED Headlights. :: Block of the front left lamp | twenty |
| 111 | Start off | 30 |
| 112 | Engine fuse and relay module | 5 |
| 113 | Replacement | - |
| 114 | AIRmatic compressor | 40 |
| 115 | Left horn fanfare fanfare right horn | fifteen |
| 116 | Hybrid: vacuum pump relay | 5 |
| 117 | Replacement | - |
| 118 | Hybrid: Electronic stabilization system control unit | 5 |
| 119 | Chain coupling 87/C2 | fifteen |
| 120 | Chain coupling 87/C1 | 7,5 |
| 121 | Control unit for electronic stabilization system | 5 |
| 122 | Hybrid: HYBRID relay | 5 |
| 123 | Night vision assistant control unit | 5 |
| 124 | Hybrid: vehicle interior and engine compartment electrical connector | 5 |
| 125 | Front SAM control unit | 5 |
| 126 | Transmission control unit Valid for diesel engine: CDI control unit Valid for petrol engine: Control unit ME-SFI [ME] | 5 |
| 127 | Replacement | - |
| 128 | Outdoor light switch | 5 |
| 129А | Hybrid: start circuit relay 50 | 30 |
| 129B | Valid except hybrid: relay start circuit 50 | 30 |
| Relay | ||
| gram | Engine compartment relay 15 circuit | |
| TIME | Start relay 50 | |
| я | Brake vacuum pump relay | |
| J | Hybrid: HYBRID relay | |
| According | Transmission oil pump relay | |
| Л | Horn relay | |
| METER | Wiper park position heater relay | |
| North | Relay circuit 87M | |
| OR | Valid except hybrid: start circuit relay 15 | |
| п | Secondary air relay | |
| Question | Hybrid: vacuum pump relay | |
| р | AIRmatic relay |
Engine fuse box
bottom view
View from above
Engine fuse box
| number | Fuse function | amplifier |
|---|---|---|
| one | Connection, circuit 30 "B1" | |
| two | Wiring diagram 30 instant “B2” | |
| M3 | Hybrid: electric car | 500 |
| M3 | In fact, except for the Hybrid: Generator | 500 |
| M1 | Hybrid: electric car | - |
| M1 | Indeed, except for the hybrid: Starter | - |
| Mr5 | Power steering control unit | 100 |
| Mr2 | Fan motor | 100 |
| M4 | Hybrid - fully integrated transmission control unit | 100 |
| I1 | Replacement | - |
| M2 | Applies to diesel engine: glow plug output stage | 150 |
| Mr1 | Engine fuse and relay module | 60 |
| Mr3 | Replacement | - |
| Mr4 | Valid for motors 277, 279: Fan motor | 150 |
| I2 | Replacement | - |
Internal fuse box
Internal fuse box
| number | Fuse function | amplifier |
|---|---|---|
| I7 | Fuse box in the right A-pillar | 125 |
| I2 | Left fuse and relay module | 125 |
| С2 | Replacement | - |
| I8 | Replacement | - |
| I9 | Replacement | - |
| I3 | Connection of the relay of shutdown of current of idling | - |
| С1 | Fan controller | 40 |
| I1 | Control unit for electronic stabilization system | 40 |
| I4 | Replacement | - |
| I6 | Rear fuse and relay module | 60 |
| I5 | Fuse box in the right A-pillar | 60 |
| F32/4k2 | Relay for quiescent current interruption |
Rear fuse box
Rear fuse box
| number | Fuse function | amplifier |
|---|---|---|
| I3 | Replacement | - |
| I2 | Windshield heating control unit | 125 |
| I7 | Hybrid - high voltage disconnect device | 7,5 |
| I4 | Rear fuse and relay module | 150 |
| I6 | Additional battery ECO start/stop | 200 |
| I7 | Additional battery, ECO start/stop function Front control unit SAM control unit electronic ignition lock | ten |
| I1 | Replacement | - |
| I11 | Replacement | - |
| I7 | Front SAM control unit | ten |
| I8 | ECO start/stop function auxiliary battery relay connection | - |
| I5 | Hybrid: high-voltage fuse is activated by the auxiliary restraint system control unit | - |
| I9 | Connecting an isolating relay | - |
| F33k1 | Decoupling relay | |
| F33k2 | ECO start/stop function Optional battery relay |
