Mercedes-Benz GLC x253 – fuse box diagram
Year of manufacture: 2015, 2016, 2017, 2018, 2019.
GLC250, GLC300, GLC350, GLC43, GLC63
Lighter fuse (power socket) in Mercedes GLC x253 Are fuses #445 (trunk socket), #446 (front cigarette lighter, internal power socket) and #447 (right rear center console socket) in the trunk.
Fuse box in the trunk
Variant 1
Variant 2
1 – Power supply to terminal 30 “E1”
2 – Power supply to terminal 30g “E2
| Number | Amps [A] | Description |
| 400 | 25 | BlueTEC: AdBlue control unit ® |
| 401 | 15 | BlueTEC: AdBlue control unit ® |
| 402 | 20 | BlueTEC: AdBlue control unit ® |
| 403 | 30 | Valid until 30.11.2015:
Front passenger seat, electric partial seat adjustment switch |
| 25 | Effective 01.12.2015:
Front passenger seat, electric partial seat adjustment switch |
|
| 404 | 30 | Valid until 30.11.2015:
Driver’s seat, electric partial seat adjustment switch |
| 25 | Effective 01.12.2015:
Driver’s seat, electric partial seat adjustment switch |
|
| 405 | – | Reservation |
| 406 | 30 | Front left door control unit |
| 407 | – | Reservation |
| 408 | 30 | Right tailgate control unit |
| 409 | – | Reservation |
| 410 | 5 | Stationary radio receiver for remote heater control;
Antenna switch for telephone and stationary heater. |
| 411 | 30 | Left front reversible emergency voltage retractor |
| 412 | 7,5 | Hybrid:
Battery management system control unit |
| 413 | 5 | Boot lid control |
| 414 | 5 | Tuner Module |
| 415 | 5 | Camera lid control unit;
Perfume atomizer generator. |
| 416 | 7,5 | Cell phone system antenna amplifier/compensator
Contact frame for cell phones |
| 417 | 5 | 360° camera control unit;
Reversing camera. |
| 418 | 5 | Rear seat heating control unit;
AIRSCARF control unit. |
| 419 | 5 | Front passenger seat lumbar support adjustment control unit |
| 420 | 5 | Driver’s seat lumbar support adjustment control unit |
| 421 | – | Reservation |
| 422 | – | Reservation |
| 423 | 5 | Sound system amplifier control unit |
| 424 | 15 | AIR BODY CONTROL Plus control unit;
Applies to engine 276: Engine sound control unit. |
| 425 | – | Reservation |
| 426 | – | Reservation |
| 427 | – | Reservation |
| 428 | – | Reservation |
| 429 | – | Reservation |
| 430 | – | Reservation |
| 431 | 25 | Multifunctional control unit for special purpose vehicle |
| 432 | 25 | Multifunctional control unit for special purpose vehicle |
| 433 | 20 | Trailer recognition control unit |
| 434 | 30 | Trailer recognition control unit |
| 435 | 25 | Trailer recognition control unit |
| 436 | 15 | Trailer recognition control unit |
| 437 | 25 | Trailer recognition control unit |
| 438 | 30 | DC / AC converter control unit |
| 439 | – | Reservation |
| 440 | 30 | Rear seat heating control unit;
AIRSCARF control unit. |
| 441 | 30 | AIRSCARF control unit |
| 442 | 25 | Fuel system control unit |
| 443 | 30 | Emergency voltage reversible right front retractor |
| 444 | 15 | Electrical connector for Tablet PC |
| 445 | 15 | Plug socket |
| 446 | 15 | Front Lighter With ashtray light;
Internal vehicle power socket. |
| 447 | 15 | 12V socket on the right center console |
| 448 | 10 | Valid for transmissions 722, 725:
Ratchet capacitor |
| 449 | 5 | Applies to the 626 engine:
Fuel filter element with integrated heater; Hybrid: Sound Generator. |
| 450 | 5 | Rear SAM control unit |
| 451 | 5 | Fuel system control unit;
BlueTEC: AdBlue control unit ®. |
| 452 | 5 | Integrated radar sensor for the right outer rear bumper; Integrated radar sensor for the outer left rear bumper; Center rear bumper radar sensor; Right rear rear outer bumper radar sensor; Rear left bumper external radar sensor. |
| 453 | 5 | Front left bumper radar sensor;
Right front bumper radar sensor; COLISION PREVENTION ASSISTANCE controller. |
| 454 | 7,5 | Valid for transmission 722:
W fully integrated gearbox control unit |
| 5 | BlueTEC:
AdBlue control unit ® |
|
| 455 | 5 | DC / AC converter control unit |
| 456 | 5 | Front long range radar sensor;
DISTRONIC electrical controller. |
| 457 | 5 | Hybrid:
Power electronics control unit; DC/DC converter control unit; Power electronics control unit. |
| 458 | 5 | Rear switching module |
| 459 | 5 | Hybrid:
Charger |
| 460 | 10 | KEYLESS-GO Control Unit |
| 461 | 5 | FM 1, AM, CL antenna amplifier [ZV] and KEYLESS-GO |
| 462 | 40 | Sound system amplifier control unit |
| 463 | 30 | Rear window heating by rear window anti-interference condenser |
| 464 | 40 | Trunk lid control Lift door control |
| 465 | 40 | Rear SAM control unit |
| 466 | 40 | Rear SAM control unit |
| 467 | 40 | Applies to the 626 engine:
Fuel filter element with integrated heater |
| Relay |
||
| S | Vehicle interior relay 15 |
|
| T | Rear window heating relay | |
| U | Cup holders in the second row of seats and seat relay | |
| V | BlueTEC: AdBlue Relay ® | |
| X | 1st row of seats/fridge box and socket relay | |
| Y | Reservation courier | |
| ZR1 | Valid for the 626 engine:
Fuel filter heater relay |
|
| ZR2 | Reserve courier | |
| ZR3 | Reserve courier | |
Fuse box in passenger footwell
| Number | Amps [A] | Description |
| 301 | 5 | Hybrid:
Pyrophosis via a high-voltage disconnector |
| 302 | 30 | Front right door control unit |
| 303 | 30 | Left rear door control unit |
| 304 | 20 | Valid for transmission 722:
Intelligent servo module for DIRECT SELECT (A80) |
| 305 | 30 | Driver’s seat controller;
Driver’s seat heating controller; Front seat heating controller. |
| 306 | 30 | Front passenger seat controller;
Controller for heating the front passenger seats; Controller for heating the front seats. |
| 307 | – | Reservation |
| 308 | 30 | American version:
Electrical connector for electric brake control |
| 309 | 10 | Control unit for the emergency call system |
| 5 | HERMES control unit;
Telematics services communication module. |
|
| 310 | – | Reservation |
| 311 | 10 | Electronic Booster Blower Controller |
| 312 | 10 | Hanging control panel control unit |
| 313 | 10 | Hybrid: DC/DC converter control unit |
| 314 | – | Reservation |
| 315 | 5 | Unit control unit Drive unit;
Applies to the diesel engine: CDI control unit; Applies to gasoline engine: ME-SFI control unit. |
| 316 | 7,5 | Control unit for the additional restraint system |
| 317 | 7,5 | Control module for the panoramic sunroof;
Control module for the sliding roof. |
| 318 | 20 | Stationary heater control unit |
| 319 | 5 | Hybrid:
PTC high voltage heater |
| 320 | 15 | AIRBODY CONTROL unit |
| 321 | 5 | Japanese version:
Dedicated short-range communications control unit. |
| 322 | 20 | Main Unit |
| 323 | 5 | Parking system control unit |
| MF1 / 1 | 7,5 | Audio Screen / COMAND Audio equipment fan motor |
| MF1 / 2 | 7,5 | Multifunctional stereo camera;
Multifunction mono camera. |
| MF1 / 3 | 7,5 | Rain and light sensor with additional functions;
Controller in the control panel. |
| MF1 / 4 | 7,5 | Driver’s seat controller;
Driver’s seat heating controller; Front seat heating controller. |
| MF1 / 5 | 7,5 | Controller for the front passenger seat;
Controller for the heating of the front passenger seats; Controller for the heating of the front seats. |
| MF1 / 6 | 7,5 | Control unit of the direction light module |
| MF2 / 1 | 5 | Left front reversible emergency voltage retractor |
| MF2 / 2 | 5 | Control Panel Audio / COMM;
Touchpad. |
| MF2 / 3 | 5 | Emergency voltage reversible right front retractor |
| MF2 / 4 | 5 | Main Screen |
| MF2 / 5 | 5 | Media Link Unit |
| MF2 / 6 | 5 | Hybrid: electric refrigerant compressor |
| MF3 / 1 | 5 | Feedback line, terminal 30g, SAM front control unit |
| MF3 / 2 | 5 | Radar sensor control unit |
| MF3 / 3 | – | Reservation |
| MF3 / 4 | 5 | Button group on the driver’s side instrument panel |
| MF3 / 5 | 5 | Rear air conditioning control unit |
| MF3 / 6 | 5 | Rear air conditioning control unit |
Instrument panel fuse box
| Number | Amps [A] | Description |
| 200 | 50 | SAM front control unit |
| 201 | 40 | SAM front control unit |
| 202 | 5 | Alarm siren |
| 203 | 20 | Valid with transmission 716:
Electric steering lock |
| 204 | 5 | Diagnostic connector |
| 205 | 7,5 | Electronic ignition interlock control unit |
| 206 | 5 | Analog Clock |
| 207 | 15 | Climate control unit |
| 208 | 7,5 | Instrument cluster |
| 209 | 5 | Climate control of the unit’s operating unit;
Upper control panel control. |
| 210 | 10 | Control unit of the direction light module |
| 211 | 25 | Reservation |
| 212 | 5 | Reservation |
| 213 | 5 | Electronic Stability Program Control Unit |
| 214 | 30 | Reservation |
| 215 | – | Reservation |
| 216 | 7,5 | Light bulb in the glove box |
| 217 | 5 | Japanese version:
Dedicated short range communications control unit |
| 218 | 7,5 | Control unit for the additional restraint system |
| 219 | 5 | Control unit of the weight detection system (WSS) |
| 220 | – | Reservation |
| Relay | ||
| F | Relay, circuit 15R | |
Fuse box in engine compartment
| Number | Amps [A] | Description |
| 100 | 40 | Hybrid:
Vacuum Pump |
| 101 | 15 | Connection sleeve, circuit 87/2 |
| 102 | 20 | Connection sleeve, circuit 87/1 |
| 103 | 15 | Connection sleeve, circuit 87/4 |
| 104 | 15 | Connecting sleeve, circuit 87/3 |
| 105 | 15 | Applies to 722.9 gear (except 722.930):
Auxiliary oil pump control unit for automatic transmission |
| 106 | – | Reservation |
| 107 | 60 | Valid with 274.9 engine:
Electric coolant pump |
| 108 | 20 | Static LED spotlight:
Right front reflector; High performance, dynamic LED headlight: |
| 109 | 30 | Windshield wiper motor |
| 110 | 20 | Static LED spotlight:
Front left reflector; High performance, dynamic LED headlight: |
| 111 | 30 | Starter |
| 112 | 15 | Hybrid: Accelerator pedal sensor |
| 113 | – | Reservation |
| 114 | 40 | Compressor AIR BODY CONTROL |
| 115 | 15 | Left horn and right horn |
| 116 | – | Reservation |
| 117 | – | Reservation |
| 118 | 5 | Hybrid:
Electronic Stability Program Control Unit |
| 119 | 15 | Circuit 87 C2 connector sleeve |
| 120 | 5 | Circuit 87 Connector C1 |
| 121 | 5 | Electronic Stability Program Control Unit |
| 122 | 5 | CPC relay |
| 123 | – | Reservation |
| 124 | – | Reservation |
| 125 | 5 | SAM front control unit |
| 126 | 5 | Power unit control unit;
Applies to the diesel engine: CDI control unit; Applies to gasoline engine: ME-SFI control unit. |
| 127 | 5 | Hybrid:
Voltage Loss Limiter |
| 128 | 5 | Left front lamp assembly and exterior light switch |
| 129 | 30 | Hybrid:
Starter circuit 50 relay |
| 129A | 30 | Hybrid:
Starter circuit 50 relay |
| Relay |
||
| G | Relay 15 in engine compartment |
|
| H | Starter Relay 50 | |
| I | Hybrid:
Vacuum pump relay (+) |
|
| J | CPC relay | |
| K. | Valid for gear 722,9 (except 722,930):
Oil pump relay |
|
| L | Horn relay | |
| M | Windshield Wiper Parking Position Heater Relay | |
| N | 87 M relay circuit. | |
| O | Hybrid:
Starter circuit 15 relay |
|
| P | Valid with 274.9 engine:
Coolant pump relay |
|
| Q | Hybrid:
Vacuum pump relay (-) |
|
| R | AIRBODY CONTROL relay | |
Pre-fuse box in engine compartment
Variant 1
Version 2
F32 / 3k1 – Decoupling relay
| Number | Amps [A] | Description |
| 1 | – | Reservation |
| 2 | 100 | Applies to the diesel engine: brightness power stage |
| 3 | 60 | Motor fuse and relay module |
| 4 | – | On-board electrical system battery connection |
| 5 | 150 | Motor fuse and relay module |
| 6 | 125 | Fuse and relay module on the left |
| 7 | 80 | Fan motor (600 W / 850 W) |
| 8 | 125 | Electric power steering control unit |
| 9 | 150 | Fan motor (1000 W) |
| 10 | 200 | Initial box inside the vehicle |
| 11 | – | Reservation |
| 12 | – | Hybrid:
Power electronics control unit; With 651.9 engine and American version: Heater control unit with catalytic converter. |
| 13 | 400 | Alternator |
| C1 | – | Hybrid: decoupling relay |
| C2 | – | Hybrid: circuit 31 |
| C3 / 1 | 40 | Electronic Stability Program Control Unit |
| C3 / 2 | 60 | Electronic Stability Program Control Unit |
Internal Prebox
F32 / 4k2 – Standby current cut-off relay
| Number | Amps [A] | Description |
| 1 | – | Engine compartment pre-fuse box |
| 2 | 150 | Hybrid:
Additional battery relay for ECO start/stop function |
| 3 | 40 | Fan Regulator |
| 4 | – | Reservation |
| 5 | 150 | Applies to the diesel engine:
PTC heater |
| 6 | 80 | Fuse box on the correct A-pillar. |
| 7 | 150 | Rear fuse and relay module |
| 8 | – | Reservation |
| 9 | – | Reservation |
| 10 | 60 | Valid for 725 transmissions (except GLC 350 and 4Matic):
W fully integrated gearbox control unit |
| 100 | GLC 350 and 4Matic:
W fully integrated gearbox control unit |
|
| 11 | – | Reservation |
| 12 | 40 | Rear fuse and relay module |
| 13 | 50 | Fuse box on the correct A-pillar. |
