Are you trying to find the fuse box location on your Mercedes-Benz M-Class W163? In this guide, you will learn how to access the fuse box panel; see a copy of the fuse layout diagram and the fuse assignment.
Where is the fuse box panel located on a Mercedes-Benz on an ML320, ML350, ML430, or ML500?
- The main fuse box is located in the engine compartment, driver’s side.
- The auxiliary fuse box is inside the cabin, in the passenger’s foot well.
Fuse Guide Applications
|Model:||ML 320 ML 350 ML 430 ML 500 ML 55 AMG|
|Years:||1998 1999 2000 2001 2002 2003 2004 2005|
Main fuse box in the engine bay
The main fuse box is located in the engine bay. It is on the left (driver’s) side of the engine. Pull the two tabs toward the front, and lift the fuse panel cover.
Fuses in the engine bay ML Class 1998-2002 W163
|Fuse #||Purpose, Designation, Function||Ampere|
|1||12-volt outlet socket||15|
|2||Left turn signal lamps||7.5|
|3||Right main headlight, headlamp||7.5|
|4||Sunroof, moon roof motor||20/40|
|5||Left bean headlamp, headlight||7.5|
|6||Lift gate wiper motor||7.5|
|7||wiper and washer system, front||30|
|8||Transfer case box||25|
|9||Instrument and license plate illumination||7.5|
|10||Anti dazzle mirror, vanity mirror, emergency call, RADIO, glove light||10|
|11||Fuel injection valves, engine functions||15|
|12||Parking lamp left||7.5|
|13||Steering angle sensor, footwell plus ceiling lights, onboard diagnosis||10|
|14||Engine control unit, diesel, fuel injection system||25|
|15||Brake stop lamps, brake light switch||10|
|16||Airbag control unit, SRS, A/C Air Conditioner system, gear selector module, instrument cluster||15|
|17||12-volt outlet on the passenger side, rear||20|
|18||Trailer socket, battery positive||25|
|19||Oxygen sensor, scavenging valve, fuel tank ventilation, vacuum pump, engine functions||15|
|21||Sound system, radio, telephone, sound amplifier||25|
|22||Traction control, transmission, steering angle sensor, diagnosis, ML55 suction fan, rain sensor, onboard computer, ETC, gear recognition, reverse, and park lock, transfer case control unit, ESP, fuel pump relay, engine electronics ME||15|
|23||Dynamic headlamp range adjustment||15|
|24||parking lamp, right||7.5|
|25||Turn signal lamp, a right, trailer hitch, turn signal lamp||7.5|
|27||ABS hydraulic unit, traction control||40|
|29||Power Window Switch. front left/rear right||30|
|30||Power Window Switch, front right/rear left||30|
|31||Switches, quarter window, mirror adjust, mirror lamps, rear vent window, outside mirror adjustment||15|
|32||Right Front, Seat adjustment switch, motor||30|
|33||Front Right, seat adjustment switch, motor||30|
|34||dipped beam headlamp left/headlight assembly range adjustment, left low beam, left headlamp||15|
|35||Low beam right (passenger side), Right front headlight unit.||15|
|36||Window heater, rear||30|
|38||Fuel pump, Fuel level sensor||20|
|40||vacuum pump for the engine||20|
|41||Recirculation pump, heater, Relay, coolant circulation pump, blower motor||25|
|42||Central locking door lock / unlock, keyfob remote||20|
|43||Heater fan, Blower motor||30|
|44||A/C, rear window washer pump, fan, air conditioner, engine fan stage 1, additional fan.||30|
|45||Air injection reactor pump, electrical air pump||40|
|46||Rear for lamp bulb||7.5|
|47||Fog lamps, front, High Beam light||15|
|48||Alarm signal, horn|
Relays in engine compartment, ML320, ML350, ML500 ML55 AMG
|K1||Heated outside mirror relay|
|K4||Turn signal lamp, left|
|K5||Instrument cluster, license plate lights|
|K6||ESP Brake stop lamp suppression|
|K7||Turn signal lamp, right|
|K8||starter, solenoid switch, KI 50 relay|
|K9||Parking lamp, right|
|K11||Terminal 15, voltage supply for diesel|
|K12||circuit 15 relay|
|K13||Parking lamp left|
|K14||comfort convenience relay|
|K15||Central locking for doors, tailgate|
|K16||Power windows right|
|K17||Windshield wiper blades, interval|
|K18||Power window left|
|K19||Heater, recirculation pump, e-box fan|
|K20||Central door locking system, all doors, tailgate, fuel tank|
|K22||Dipped beam headlamp, contact piece, daytime driving light relay|
|K23||Central door locking system, passenger door, rear doors|
|K24||Central door locking, driver’s door, fuel tank filler cap|
|K25||ABS Hydraulic Unit|
|K26||Fan air conditioning system|
|K27||rear window washer pump|
|K28||Air injection reactor pump|
|K29||Rear fog lamp|
|K30||Fog headlamp / AUX|
The auxiliary fuse box is located inside the cabin, in the passenger’s footwell.
A second fuse box is located in the passenger footwell. This is the auxiliary fuse box. To access the fuses inside, you must twist the two plastic locks and pull the cover towards the back of the engine.
Fuses in the auxiliary panel.
|1||Instrument cluster, Airbag indicator||7.5|
|2||Cigarette outlet, lighter||20|
|3||Rear window wiper||15|
|4||E Call emergency call system, TeleAid||7.5|
|6||Cockpit socket 12-volt outlet||20|
|10||Power seat adjustment left||30|
|11||Power seat adjustment, right||30|
|13||electric fuel pump||20|
|17||Heated rear window||25|
|19||Headlamp cleaning system||30|
Relays are located in the fuse and relay box by the passenger’s foot well.
|K1||Seat comfort relay|
|K2||electric fuel pump|
|K4||Heated rear window|
|K5||Headlamp cleaning system|
What type of fuse do I need to replace blown fuse on my Mercedes-Benz?
When replacing blown fuses, use the same ampere rating fuse. The fuse rating is written on the fuse. You can verify that you are using the correct fuse by ensuring the fuse colors for the blown fuse and the new fuse match. This indicates the same ampere rating.
Your Mercedes-Benz uses Automotive Blade Fuse Type. A box of 100 fuses that include all the different ampere ratings you need costs less than $20 on Amazon.
What is the importance of knowing the fuse box locations of your Mercedes-Benz?
- Electrical troubleshooting: When a vehicle has an electrical problem, such as a malfunctioning radio or a non-functioning turn signal, the fuse box is the first place to check. By knowing the location of the fuse box, the driver or technician can quickly check the fuses related to the malfunctioning electrical component.
- Preventing damage: Fuses protect the electrical components of a vehicle from damage caused by power surges or overloads. By knowing the location of the fuse box, the driver can quickly replace a blown fuse and prevent further damage to the vehicle’s electrical system.
- Safety: In some cases, a blown fuse can cause a safety hazard. For example, if the fuse for the brake lights is blown, other drivers may not be able to see when the vehicle is stopping. Knowing the location of the fuse box and the function of each fuse can help prevent accidents and ensure the safety of the vehicle’s occupants and other drivers on the road.
- Maintenance: To maintain a vehicle’s electrical system, checking the fuses and replacing any blown ones regularly is important. Knowing the location of the fuse box and how to access it can make this process quicker and easier.
Overall, knowing the location and function of the fuse box is important for maintaining a vehicle’s electrical system and ensuring the safety of its occupants and others on the road.
I have a 2003 ML350 and the alarm just started going off for no reason yesterday, whenever the key was not inserted and turned to at least the 2 position. I changed the remote batteries after pulling fuse F48 and relay K31. I then replaced the fuses, but the remote no longer works.
hey there i have a 2003 ml350 W163, i have my BAS ABS and ETS lights on so i thought id check the relays and fuses but i don’t have a K25 Relay and there’s nothing listed there i do have the abs unit all i have is a F27 40 Amp fuse.
Hello. Thank you for such an informative article. I have a ml350 w 163. The issue is that when you turn on the parking lamp, the bulb does not light up. So when you are driving at night, there is no light until you puch on the brake. I have checked all the fuses under the hood (F25/F1/F15/F24/F12) as well as the physical bulbs that are in the parking lamp socket, which are all working. I am convinced there was some sort of short specifically in that socket where the pocket lamp is. Would you have any suggestions please?
Yes it is very likely that you have a short. I would check for shorts and continuity at the rear tail lights. Also make sure there is no accidental contact between the tail light circuit and any metal parts. Get a multimeter and start testing back there. Compare both sides because it is most likely it is just one of the tail lights that is causing the problem.