2014-2018 Mercedes-Benz S-Class (W222 / C217 / A217)
Location
F32/3 - Engine compartment prefuse box
K40/6 - Left fuse and relay module
K40/8 - Engine fuse and relay module
F1/3 - Right A-pillar fuse box
F32/4 - Vehicle interior prefuse box
F33 - Rear prefuse box
K40/5 - Rear fuse and relay module
Fuse and relay box in engine compartment
- Open the hood.
- To open: release retaining clamps (1) and remove cover (2).
- Use a dry cloth to remove any moisture from the fuse box.
- Undo screws (3) on the fuse box.
- Remove fuse box cover (4) forwards.
- To close: check whether the seal is lying correctly in cover (4).
- Insert cover (4) at the rear of the fuse box into the retainer.
- Fold down cover (4) of the fuse box and tighten screws (3).
- Insert cover (2) and secure with retaining clamps (1).
- Close the hood.
| No. | A | Description |
|---|---|---|
| 100 | 40 | Hybrid: Vacuum pump |
| 101 | 15 | Connector sleeve, circuit 87/2 |
| 102 | 20 | Connector sleeve, circuit 87/2 |
| 103 | 15 | Connector sleeve, circuit 87M4 |
| 104 | 15 | Connector sleeve, circuit 87M3 |
| 105 | 15 | Valid for transmission 722.9: Transmission oil auxiliary pump control unit |
| 106 | 25 | Wiper park position heater |
| 107 | 60 | M277, M279: Starter/air pump electrical connection |
| 108 | 20 | Valid for SAE dynamic LED headlamp for right-hand traffic or Dynamic LED headlamp:: Left front lamp unit Right front lamp unit Valid without SAE dynamic LED headlamp for right-hand traffic or Dynamic LED headlamp:: Right front lamp unit |
| 109 | 30 | Wiper motor |
| 110 | 20 | Valid for code SAE dynamic LED headlamp for right-hand traffic or Dynamic LED headlamp:: Left front lamp unit Right front lamp unit Valid without SAE dynamic LED headlamp for right-hand traffic or Dynamic LED headlamp:: Left front lamp unit |
| 111 | 30 | Starter |
| 112 | 5 | Engine fuse and relay module |
| 113 | - | - |
| 114 | 40 | AIRmatic compressor |
| 115 | 15 | Left fanfare horn Right fanfare horn |
| 116 | 5 | Hybrid: Vacuum pump relay |
| 117 | - | - |
| 118 | 5 | Hybrid: Electronic Stability Program control unit |
| 119 | 15 | Circuit 87/C2 connector sleeve |
| 120 | 7.5 | Circuit 87/C1 connector sleeve |
| 121 | 5 | Electronic Stability Program control unit |
| 122 | 5 | Hybrid: HYBRID relay |
| 123 | 5 | Night View Assist control unit |
| 124 | 5 | Hybrid: Vehicle interior and engine compartment electrical connector |
| 125 | 5 | Front SAM control unit |
| 126 | 5 | Powertrain control uni Diesel: CDI control unit Gasoline: ME-SFI [ME] control unit |
| 127 | - | - |
| 128 | 5 | Exterior lights switch |
| 129A | 30 | Hybrid: Starter circuit 50 relay |
| 129B | 30 | except Hybrid: Starter circuit 50 relay |
| Relay | ||
| G | Engine compartment circuit 15 | |
| H | Starter circuit 50 | |
| I | Brake vacuum pump | |
| J | Hybrid: HYBRID relay | |
| K | Transmission oil pump | |
| L | Horn | |
| M | Wiper park position heater | |
| N | Circuit 87M | |
| O | except Hybrid: Starter circuit 15 | |
| P | Secondary air injection | |
| Q | Hybrid: Vacuum pump | |
| R | AIRmatic | |
W222 / V222 / C217 Coupe / A217 Cabriolet
Gasoline:
- 3.0L - M276 (S400 4MATIC)
- 3.0L - M276 (S500e)
- 3.5L - M276 (S400h)
- 4.7L - M278 (S500, S500 4MATIC)
- 5.5L - M157 (S63 AMG, S63 4MATIC)
- 6.0L - M279 (S600, S65 AMG)
Diesel:
- 2.2L - OM651 (S300h)
- 3.0L - OM642 (S350d, S350d 4MATIC)
The Instrument Panel Fuse Panel
| No. | A | Description |
|---|---|---|
| 200 | 40 | Front SAM control unit |
| 201 | 40 | Front SAM control unit |
| 202 | 5 | Alarm siren |
| 203 | 30 | W222: Driver seat heater control unit |
| 204 | 5 | Diagnostic connector |
| 205 | 7.5 | Electronic ignition lock control unit |
| 206 | 5 | Analog clock |
| 207 | 20 | Climate control control unit |
| 208 | 7.5 | Instrument cluster |
| 209 | 5 | Front climate control operating unit |
| 210 | 10 | Steering column tube module control unit |
| 211 | - | - |
| 212 | - | - |
| 213 | 25 | Electronic Stability Program control unit |
| 214 | - | - |
| 215 | - | - |
| 216 | - | - |
| 217 | 5 | Japan: Dedicated Short-Range Communications control unit |
| 218 | 5 | Supplemental restraint system control unit |
| 219 | 5 | Weight sensing system (WSS) control unit Front passenger seat occupied recognition and ACSR |
| 220 | 15 | MAGIC VISION CONTROL relay |
| Relay | ||
| D | MAGIC VISION CONTROL | |
| E | Backup | |
| F | Relay, circuit 15R | |
Fuse box in the front-passenger footwell
- Open the front-passenger door.
- Fold cover (1) down and remove it.
- Circuit 30 "E1" connection
- Circuit 30g "E2" connection
| No. | A | Description |
|---|---|---|
| 301 | 5 | Mirror taximeter |
| 302 | 30 | Right front door control unit |
| 303 | 30 | W222: Left rear door control unit C217, A217: Rear control unit |
| 304 | 30 | W222: Right rear door control unit C217, A217: Rear control unit |
| 305 | 30 | Driver seat control unit |
| 306 | 30 | Front passenger seat control unit |
| 307 | 20 | W222: Intelligent servo module for DIRECT SELECT |
| 30 | C217, A217: Driver seat heater control unit | |
| 308 | 30 | Front passenger seat heater control unit |
| 309 | 5 | Emergency call system control unit Telematics services communications module HERMES control unit |
| 310 | 25 | Stationary heater control unit |
| 311 | 10 | Rear blower motor |
| 312 | 10 | Overhead control panel control unit |
| 313 | 10 | Hybrid and Hybrid Plus: Power electronics control unit |
| 314 | 7.5 | A217: Antitheft alarm system (designation in coordination) |
| 315 | 10 | Powertrain control unit Gasoline: ME-SFI control unit OM642, OM651: CDI control unit |
| 316 | - | - |
| 317 | 30 | W222: Panoramic sliding sunroof control module C217, A217: MAGIC SKY CONTROL control unit |
| 318 | 15 | Audio/COMAND display |
| 319 | 30 | Panoramic sliding sunroof control module C217, A217: Panoramic roof roller sun blind control module |
| 320 | 15 | Active Body Control control unit AIRmatic control unit (except Active Body Control) |
| 321 | 20 | C217, A217: Intelligent servo module for DIRECT SELECT |
| 322 | 15 | COMAND controller unit |
| 323 | 7.5 | Supplemental Restraint System control unit |
| MF1/1 | 7.5 | Japan: Dedicated Short-Range Communications control unit |
| MF1/2 | 7.5 | Mono multifunction camera Stereo multifunction camera |
| MF1/3 | 7.5 | Rain/light sensor with additional functions Overhead control panel control unit |
| MF1/4 | 7.5 | Driver seat control unit |
| MF1/5 | 7.5 | Front passenger seat control unit |
| MF1/6 | 7.5 | Steering column tube module control unit |
| MF2/1 | 5 | Perfume atomizer generator |
| MF2/2 | 5 | Audio/COMAND control panel Touchpad |
| MF2/3 | 5 | Electronic Stability Program control unit |
| MF2/4 | 5 | Heads-up display |
| MF2/5 | 5 | Hybrid and Hybrid Plus: Electrical refrigerant compressor |
| MF2/6 | - | - |
| MF3/1 | 5 | Front SAM control unit |
| MF3/2 | 5 | Radar sensors control unit |
| MF3/3 | 5 | COMAND fan motor |
| MF3/4 | 5 | Driver side instrument panel button group Center instrument panel button group |
| MF3/5 | 5 | Rear air conditioning operating unit |
| MF3/6 | 5 | 01.06.2016→: Antenna changeover switch for telephone and stationary heater |
Fuse and relay box in rear
- Open the trunk lid.
- Prise open cover (1) with a flat object at the top right and top left-hand side.
- Open cover (1) downwards in the direction of the arrow.
- Circuit 30 "E1" connection
- Circuit 30g "E2" connection
| No. | A | Description |
|---|---|---|
| 400 | 10 | Parking system control unit (Active Parking Assist or code 360-degree camera) |
| 401 | 5 | Trunk lid control control unit |
| 402 | 7.5 | Rear entertainment controller unit |
| 403 | - | - |
| 404 | 7.5 | Armrest heater control unit |
| 405 | 7.5 | Sound system amplifier control unit Left front door tweeter control unit Right front door tweeter control unit |
| 406 | - | - |
| 407 | - | - |
| 408 | 5 | Tuner unit |
| 409 | 5 | 360° camera control unit Reversing camera |
| 410 | 5 | Camera cover control unit |
| 411 | 5 | Tire pressure monitor control unit |
| 412 | 7.5 | Rear seat heater control unit |
| 413 | 10 | Left rear display Right rear display |
| 414 | 7.5 | Rear cellular telephone system antenna amplifier/compensator Rear mobile phone cradle Rear mobile phone contact plate Telephone module with Bluetooth® (SAP profile) |
| 415 | - | - |
| 416 | - | - |
| 417 | 20 | Trailer recognition control unit |
| 418 | - | - |
| 419 | - | - |
| 420 | 30 | DC/AC converter control unit |
| 421 | 30 | Multicontour seat pneumatic pump |
| 422 | 30 | W222: Right rear door control unit |
| 423 | - | - |
| 424 | 40 | Rear SAM control unit |
| 425 | - | - |
| 426 | 30 | Bass speaker amplifier |
| 427 | 20 | Armrest heater control unit |
| 428 | 15 | Trailer recognition control unit |
| 429 | 10 | Rear cup holder |
| 430 | 15 | Cigarette lighter with ashtray illumination, rear Cigarette lighter with rear center console illumination Left rear center console socket 12V (ashtray package/smoker package) |
| 431 | 15 | Rear backrest refrigerator box |
| 432 | 10 | Rear SAM control unit |
| 433 | 25 | AdBlue® control unit |
| 434 | 15 | AdBlue® control unit |
| 435 | 20 | AdBlue® control unit |
| 436 | 20 | Rear cup holder |
| 437 | - | - |
| 438 | 7.5 | C217 with M157: Right exhaust flap actuator motor |
| 439 | 7.5 | C217 with M157: Left exhaust flap actuator motor |
| 440 | - | - |
| 441 | - | - |
| 442 | - | - |
| 443 | - | - |
| 444 | - | - |
| 445 | 5 | Stationary heater radio remote control receiver |
| 446 | 5 | FM 1, AM, CL [ZV] and KEYLESS-GO antenna amplifier |
| 447 | 7.5 | Hybrid: Battery management system control unit |
| 448 | - | - |
| 449 | - | - |
| 450 | - | - |
| 451 | 15 | Trailer socket |
| 452 | 5 | Left rear bumper radar sensor Right rear bumper radar sensor Center rear bumper radar sensor |
| 453 | 5 | Left front bumper radar sensor Right front bumper radar sensor COLLISION PREVENTION ASSIST controller unit |
| 454 | 5 | AdBlue® control unit Fuel system control unit |
| 455 | 15 | Fully integrated transmission control controller unit |
| 456 | - | - |
| 457 | 7.5 | Valid for lithium-ion battery: Starter battery capacitor |
| 458 | - | - |
| 459 | - | - |
| 460 | 15 | Front cigarette lighter with ashtray illumination |
| 461 | 15 | Right rear center console socket 12V Socket 12V DC/AC converter control unit |
| 462 | 15 | Luggage compartment socket |
| 463 | - | - |
| 464 | 20 | Trailer recognition control unit |
| 465 | 30 | Electric parking brake control unit |
| 466 | 30 | Left front door control unit |
| 467 | 10 | KEYLESS-GO control unit |
| 468 | 30 | Electric parking brake control unit |
| 469 | 25 | Fuel system control unit |
| 470 | 30 | Left rear seat heater control unit Rear seat heater control unit |
| 471 | 30 | Right rear seat heater control unit |
| 472 | 30 | C217, A217: Rear control unit |
| 473 | 20 | Trailer recognition control unit |
| 475 | 40 | Sound system amplifier control unit |
| 476 | 40 | Sound system amplifier control unit |
| 477 | 40 | Active belt buckle control unit C217, A217: Rear control unit |
| 478 | 30 | Left rear seat control unit |
| 479 | 40 | Active belt buckle control unit |
| 480 | 30 | Right rear seat control unit |
| 481 | 5 | Left front reversible emergency tensioning retractor |
| 482 | 5 | W222: MAGIC SKY CONTROL control unit |
| 7.5 | C217, A217: MAGIC SKY CONTROL control unit | |
| 483 | 5 | Right front reversible emergency tensioning retractor |
| 484 | 7.5 | Right rear seat control unit Left rear seat control unit |
| 485 | 5 | Active belt buckle control unit |
| 486 | 10 | Hybrid: Battery management system control unit Power electronics control unit |
| 487 | 5 | Electric parking brake control unit |
| 488 | 5 | Rear SAM control unit |
| 489 | 5 | Front long-range radar sensor |
| 490 | 5 | Multicontour seat pneumatic pump |
| 491 | 40 | Trunk lid control control unit |
| 492 | 40 | Right front reversible emergency tensioning retractor |
| 493 | - | - |
| 494 | 40 | Rear SAM control unit |
| 495 | 40 | Rear window heater |
| 496 | 40 | Left front reversible emergency tensioning retractor |
| Relay | ||
| S | Vehicle interior circuit 15 | |
| T | Rear window heater | |
| U | 2nd seat row cupholder and sockets | |
| V | AdBlue® | |
| W | Circuit 15R | |
| X | 1 st seat row/trunk refrigerator box and sockets | |
| Y | - | |
Engine compartment prefuse box
View from below
View from above
1 - Connection, circuit 30 "B1"
2 - Connection, circuit 30 unlatched "B2"
| No. | A | Description |
|---|---|---|
| M3 | 500 | Hybrid: Electrical machine |
| 500 | except Hybrid: Alternator | |
| M1 | - | Hybrid: Electrical machine |
| - | except Hybrid: Starter | |
| MR5 | 100 | Electrical power steering control unit |
| MR2 | 100 | Fan motor |
| M4 | 100 | Hybrid: Fully integrated transmission control controller unit |
| I1 | - | - |
| M2 | 150 | Diesel: Glow output stage |
| MR1 | 60 | Motor fuse and relay module |
| MR3 | - | - |
| MR4 | 150 | M277, M279: Fan motor |
| I2 | - | - |
Vehicle interior prefuse box
F32/4k2 - Quiescent current cutout relay
| No. | A | Description |
|---|---|---|
| I7 | 125 | Right A-pillar fuse box |
| I2 | 125 | Left fuse and relay module |
| C2 | - | - |
| I8 | - | - |
| I9 | - | - |
| I3 | - | No-load current shutoff relay connection |
| C1 | 40 | Blower regulator |
| I1 | 40 | Electronic Stability Program control unit |
| I4 | - | - |
| I6 | 60 | Rear fuse and relay module |
| I5 | 60 | Right A-pillar fuse box |
Rear prefuse box
F33k1 - Decoupling relay
F33k2 - ECO start/stop function additional battery relay
| No. | A | Description |
|---|---|---|
| I3 | - | - |
| I2 | 125 | Windshield heater control unit |
| I7 | 7.5 | Hybrid: High-voltage disconnect device |
| I4 | 150 | Rear fuse and relay module |
| I6 | 200 | ECO start/stop function additional battery |
| I7 | 10 | ECO start/stop function additional battery Front SAM control unit Electronic ignition lock control unit |
| I1 | - | - |
| I11 | - | - |
| I7 | 10 | Front SAM control unit |
| I8 | - | ECO start/stop function additional battery relay connection |
| I5 | - | Hybrid: High-voltage pyrofuse triggered by Supplemental Restraint System control unit |
| I9 | - | Decoupling relay connection |