Table of Contents
Mercedes-Benz GLK—as the model name Geländewagen Luxus Kompaktklasse suggests, a compact luxury SUV. It debuted in 2008 at the Beijing Motor Show alongside its competitor, the Audi Q5. In this article, we provide a detailed overview of the fuse box diagrams for the Mercedes-Benz GLK-Class (chassis code X204; 1st Generation; models 300, 350, 220) covering model years 2008 through 2015.
Here you will find the locations and photographs of the power distribution boxes. Fuses responsible for the “Cigarette lighter” and “Fuel pump” are highlighted in bold.
In the engine compartment
The power distribution box is located on the right side of the engine bay; an additional fuse box for high-current links is located near the battery.
To access: pull out the wiring harness (2). Release the retaining clips (1).
The photograph shows a representative example.
| Diagram | ||
|---|---|---|
|
||
| No. | Relay assignment | |
| J | Circuit 15 | |
| K | Circuit 15R | |
| L | Spare | |
| M | Circuit 50 starter | |
| N | Circuit 87 engine | |
| O | Horn relay | |
| P | Vehicles with engines 156, 272, 276: Purge control valve relay | |
| Q | ECO Start/Stop function: Oil cooler fan motor relay | |
| R | Circuit 87 chassis/suspension | |
| No. | A | Fuse purpose |
| 1 | 25 | Electronic Stability Program ESP (N30/4) |
| 2 | 30 | Front left door control unit (N69/1) |
| 3 | 30 | Up to 03/31/2010: Front right door control unit (N69/2) |
| 4 | 7.5 | Vehicles with engines 271, 272 up to 08/31/2008: Fuel pump control unit (N118) |
| 7.5 | Vehicles with engine 642: Left and right fuel pump control units (N118/3) | |
| 7.5 | Vehicles with engine 642 with code (U41) fuel filter with water separator and lubrication system service package, engine 651: Fuel filter condensate sensor with heating element (B76/1) | |
| 20 | Headlamp range control unit (N71/1) | |
| 7.5 | Vehicles with engine 651 up to 05/31/2010 or engine 646 with code (710) Optional installation of a heated fuel filter: Fuel filter condensate sensor control unit with heating element (N33/7) |
|
| 5 | 7.5 | Rear SAM control unit with fuse and relay module (N10/2) |
| 7.5 | Vehicles with engine 156 with code (P98) Black Series starting from 07/01/2011: Rear axle differential oil cooler circulation pump relay (K36/3) | |
| 7.5 | From 12/01/2009: Exterior lighting switch (S1) | |
| 6 | 10 | Vehicles with diesel engine: CDI control unit (N3/9) |
| 10 | Vehicles with gasoline engine: ME control unit (N3/10) | |
| 7 | 20 | Connected via starter terminal 50 relay (N10/1kM): Starter (M1) |
| 8 | 7.5 | Supplemental restraint system (SRS) control unit (N2/10) |
| 9 | 15 | Glove compartment socket, Mercedes-Benz GLK (X204) cigarette lighter fuse |
| 10 | 30 | Valid for model series 204.9: Wiper motor (M6/1) |
| 11 | 7.5 | Valid for vehicles with code (523) Audio 20 radio, code (510) Audio 20 including CD changer, code (525) Audio 50 APS radio, code (511) Audio 50 APS including DVD changer, code (527) COMAND APS with single-disc DVD drive (navigation function), or code (512) COMAND APS including DVD changer (or code (528) COMAND including DVD changer from 06/01/2009 onwards): |
| Audio display / COMAND display (A40/8) | ||
| Audio control panel / COMAND operating unit (A40/9) | ||
| 7.5 | Vehicles with code (509) navigation module: Navigation module cradle (A2/30-1) | |
| 12 | 7.5 | Automatic climate control control unit (N22/7) |
| 7.5 | Type 204.0/2 up to 02/28/2011, type 204.9: Upper control panel control unit (N72/1) | |
| 13 | 7.5 | Steering column module (N80) |
| 7.5 | Effective from 03/01/2011 on vehicles with code (238) Active Lane Keeping Assist, code (476) Lane Recognition, code (513) Traffic Sign Assist, or code (608) Adaptive Highbeam Assist: Multifunction camera (A40/11) | |
| 14 | 7.5 | Electronic Stability Program ESP (N30/4) |
| 15 | 7.5 | Restraint system (N2/10) |
| 16 | 5 | Vehicle type 204.0/2 up to 05/31/2009: Data link connector (DLC) (X11/4) |
| 5 | Vehicles with transmission 722: Electronic selector lever module (N15/5) | |
| 17 | 30 | Vehicles with code (413) Panoramic sliding sunroof: |
| 30 | Type 204.0/2/3 with code (414) Electrically operated glass sliding sunroof: | |
| 18 | 7.5 | Type 204.0/2 from 03/01/2011 onwards, type 204.3: Upper control panel control unit (N72/1) |
| 7.5 | Vehicles type 204.0/2 up to 02/28/2011, type 204.9: LIN data bus positive terminal sleeve for instrument panel air conditioning system (Z68/2) | |
| 7.5 | Interior-to-rear wiring harness electrical connector (X18) | |
| 19 | 20 | Electronic steering lock (N26/5) |
| Electronic ignition switch (N73) | ||
| 20 | 40 | Electronic Stability Program ESP (N30/4) |
| 21 | 7.5 | Vehicles type 204.0/2 up to 02/28/2011, type 204.9 up to 05/31/2011: Brake pedal switch (S9/1) |
| 7.5 | Glove compartment lamp switch (S17/9) | |
| 7.5 | Valid for vehicles with code (U18) Automatic Child Seat Recognition (AKSE): | |
| 7.5 | Valid for vehicles with code (498) Japan version: Electronic Toll Collection (ETC) system wiring preparation (F34/5) | |
| 22 | 15 | Engine cooling fan motor and air conditioning system (M4/7) |
| 15 | Passenger compartment-to-engine wiring harness connector (X26) | |
| 23 | 20 | Passenger compartment-to-engine wiring harness connector (X26) |
| 20 | Vehicles with diesel engine: Rear SAM control unit with fuse and relay module (N10/2) | |
| 20 | Interior-to-engine wiring harness connector (X26) | |
| 24 | 15 | |
| 15 | Vehicles with engine 642: Radiator shutter actuator (Y84) | |
| 15 | Models with engine 646: CDI control unit (N3/9) | |
| 25 | 15 | Vehicles with engines 156, 271, 272, 274, 276: ME control unit (N3/10) |
| 15 | Models with engine 651: Oxygen sensor upstream of catalytic converter (G3/2) | |
| 15 | From 06/01/2010 onwards for type 204.3 with engine 651 and with code (P84) Sport Edition: Exhaust system sound generator control unit (N12) | |
| 26 | 20 | Vehicles with code (523) Audio 20 radio or code (510) Audio 20 including CD changer |
| 20 | Vehicles with code (525) Audio 50 APS radio or code (511) Audio 50 APS including DVD changer | |
| 20 | Vehicles with code (527) COMAND APS with single-disc DVD drive (navigation function), code (512) COMAND APS including DVD changer, or code (528) COMAND including DVD changer (from 06/01/2009 onwards): | |
| 27 | 7.5 | Electronic ignition switch control unit (N73) |
| 7.5 | Vehicles with diesel engine: CDI control unit (N3/9) | |
| Vehicles with gasoline engine: ME control unit (N3/10) | ||
| 28 | 7.5 | Instrument cluster (A1) |
| 29 | 10 | Front right headlamp (E2) |
| 30 | 10 | Front left headlamp (E1) |
| 10 | Vehicles with engine 642: Interior-to-engine wiring harness connector (X26) | |
| 31A | 15 | Horn relay (N10/1kO) activated: Left and right horns |
| 31B | 15 | Horn relay (N10/1kO) activated: Left and right horns |
| 32 | 40 | Vehicles with engines 156, 271, 272: Activated via the air pump relay (N10/1kP): Secondary air injection pump (M33) |
| 33 | 10 | Vehicles with transmission 722.6: Automatic transmission control unit (N15/3) |
| 10 | Vehicles with transmission 722.9: Fully integrated transmission control (VGS) unit (Y3/8) | |
| 34 | 7.5 | Vehicles with engines 274, 276: Fuel pump control unit (N118) |
| 7.5 | Valid for vehicles with engines 271, 272, 651 starting from 06/01/2009, and engine 642 starting from 12/01/2009: Fuel pump fuse (N118) | |
| 35 | 5 | ESP driving dynamics control unit (N30/4) |
| 36 | 7.5 | Vehicles with code (233) DISTRONIC PLUS |
| 7.5 | Vehicles type 204.902/982/984: Parameter steering / speed-sensitive power steering (A91/1) | |
In the passenger compartment
The fuse box is located on the left-hand side of the dashboard, behind the plastic cover.
| Diagram | ||
|---|---|---|
|
||
| No. | A | Description |
| 116 | 30 | Until 05/31/2009 for vehicles with code (275) Memory package (driver's seat, steering column, mirrors) |
| 117 | 15 | Until 05/31/2009 on vehicles of type 204.0/2 with code (483) Advanced Agility package / adaptive damping system control unit |
| 118 | - | Spare |
| 119 | 7.5 | Until 05/31/2009 on vehicles with code (581) Automatic climate control: Rear cabin blower motor (M2/1) |
| 7.5 | Up to 06/01/2012 on vehicles with code (255) AMG Performance Media | |
| 120 | - | Spare |
| 121 | - | Spare |
| 122 | - | Spare |
| 123 | 10 | On vehicles type 204.0/2/3 with code (443) Heated steering wheel or code (476) Lane Recognition |
| 124 | - | Spare |
| 125 | - | Spare |
| 126 | 30 | Until 05/31/2009 on vehicles with code (242) Electrically adjustable front passenger seat with memory |
| 127 | - | Spare |
| 128 | - | Spare |
| 129 | 20 | Until 05/31/2009 for vehicles with engine 156: Oil cooler fan motor relay (K25) |
| 130-135 | - | Spare |
In the trunk
The fuse box is located in the spare tire well, behind the trim panel.
General view of the Mercedes-Benz GLK (X204) luggage compartment fuse box.
| Diagram | ||
|---|---|---|
|
||
| No. | Description | A |
| F37 | Supplemental restraint system (SRS) | 5 |
| F38 | Rear window wiper motor | 15 |
| F39 | Rear left door control unit | 30 |
| F41 | ^ 03/10: Rear right door control unit | 30 |
| F42 | Fuel system control module (Mercedes-Benz GLK fuel pump fuse) | 20 |
| F43 | 7.5 | |
| F44 | 30 | |
| F45 | 30 | |
| F46 | 7.5 | |
| F49 | Rear window defroster | 40 |
| F50 | Supplemental restraint system (SRS) | 50 |
| F51 | 50 | |
| F53 | Trailer hitch electronics | 15 |
| F54 | 7.5 | |
| F56 | 15 | |
| F57 | 20 | |
| F58 | 20 | |
| F59 | Parktronic system (PTS) | 7.5 |
| F60 | Multicontour seat pneumatic pump | 7.5 |
| F61 | Tailgate opening/closing drive motor | 40 |
| F62 | 30 | |
| F63 | 30 | |
| F67 | Audio amplifier | 30 |
| F69 | 20 | |
| F70 | Tire pressure loss warning system / Tire Pressure Monitoring System (TPMS) | 5 |
| F71 | Mercedes-Benz GLK cigarette lighter fuse | 15 |
| F73 | 7.5 | |
| F74 | Keyless-Go control unit | 15 |
| F75 | Auxiliary heater | 20 |
| F76 | Auxiliary power socket | 15 |
| F81 | Multimedia interface control unit | 5 |
| F82 | Telephone module | 5 |
| F83 | 7.5 | |
| F84 | 7.5 | |
| F86 | DVD player | 7.5 |
| F87 | Emergency call system (eCall) | 7.5 |
| F89 | Trailer hitch electronics | 20 |
| 3 | Rear window defroster relay | |
| 5 | Rear window wiper relay | |
| 6 | Power seat relay | |