1998-2005 Benz ML320 ML350 ML500 Fuse Box Location Diagram

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
Chassis:	W163
Make:	Mercedes-Benz

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
20	Mirror heater	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
26	ignition coils	15
27	ABS hydraulic unit, traction control	40
28	heated seats	20
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
37	Horn	20
38	Fuel pump,  Fuel level sensor	20
39	not used	–
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

Relay	Function
K1	Heated outside mirror relay
K2	Horn
K3	Fuel pump
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
K10	Not used
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
K21	Fan Heater
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
K31	alarm horn

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. 

Fuse	Purpose	Ampere
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
5	Instrument Cluster	7.5
6	Cockpit socket 12-volt outlet	20
7	not used
8	Heated seats	20
9	not used
10	Power seat adjustment left	30
11	Power seat adjustment, right	30
12	not used
13	electric fuel pump	20
17	Heated rear window	25
19	Headlamp cleaning system	30
26	Circuit 15	70

Relays are located in the fuse and relay box by the passenger’s foot well.

Relay	Purpose, Function
K1	Seat comfort relay
K2	electric fuel pump
K4	Heated rear window
K5	Headlamp cleaning system
K9	Circuit 15

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?

1. 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.
2. 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.
3. 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.
4. 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.

 

What is the Best Scanner for Diagnosing Tripped Fuses and Broken Relays on a Mercedes-Benz?

The YOUCANIC full-system diagnostic scanner is a smart tool that helps uncover the mysteries of a car’s electronic systems. It’s a go-to for tackling tricky electrical problems, perfect for car experts and enthusiasts. If you’re dealing with a tripped fuse, this scanner quickly spots where things went wrong and helps you get things back on track.

Overall, the YOUCANIC full system diagnostic scanner is invaluable for any Mercedes-Benz owner or technician looking to troubleshoot problems quickly and accurately. With its user-friendly interface and powerful diagnostic capabilities, you can save time, money, and frustration by diagnosing and resolving issues with your Mercedes-Benz quickly and efficiently.