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
![](https://fuse-box-diagrams.com/wp-content/uploads/2023/01/1674446053_241_Mercedes-Benz-GLC-X253C253-2015-2019-Fuse-box.jpg)
Version 2
![](https://fuse-box-diagrams.com/wp-content/uploads/2023/01/1674446053_586_Mercedes-Benz-GLC-X253C253-2015-2019-Fuse-box.jpg)
![](https://fuse-box-diagrams.com/wp-content/uploads/2023/01/1674446053_586_Mercedes-Benz-GLC-X253C253-2015-2019-Fuse-box.jpg)
![](https://fuse-box-diagrams.com/wp-content/uploads/2023/01/1674446053_586_Mercedes-Benz-GLC-X253C253-2015-2019-Fuse-box.jpg)
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
![](https://fuse-box-diagrams.com/wp-content/uploads/2023/01/1674446053_310_Mercedes-Benz-GLC-X253C253-2015-2019-Fuse-box.jpg)
![](https://fuse-box-diagrams.com/wp-content/uploads/2023/01/1674446053_310_Mercedes-Benz-GLC-X253C253-2015-2019-Fuse-box.jpg)
![](https://fuse-box-diagrams.com/wp-content/uploads/2023/01/1674446053_310_Mercedes-Benz-GLC-X253C253-2015-2019-Fuse-box.jpg)
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. |