Home > DIY > M-Class > W164 (2006-2011) > Fuses W164 M-Class 2006-2011 Diagram, Box Location ML320 ML350 ML500 ML550
ML w164 fuse box chart location

Fuses W164 M-Class 2006-2011 Diagram, Box Location ML320 ML350 ML500 ML550

Where are the fuses located on my Mercedes-Benz M-Class 2006-2011 W164?

Fuse locations on Mercedes-Benz M-Class W164 2006-2011.

  • The main fuse box and relay box are located in the engine compartment.
  • Rear, passenger side in the trunk.
  • Inside the cabin. The passenger side of the dash.
  • Prefuse box in the engine compartment. Near the hood hinge, passenger side.
  • Prefuse box by the battery.
  • The fuse box for AdBlue is located on the rear left, above the rear shock.

Fuse Guide Applications

Model: ML 320 CDI ML 320 BLUETEC ML 350 ML 500 ML 550 ML 63 AMG M-Class
Years: 2006 2007 2008 2009 2010 2011
Chassis: 164
Make: Mercedes-Benz

Fuse Box – Passenger side of the dash

W164 fuse F3 ML

Several fuses are located on the passenger side of the dash in the cabin. Remove the plastic cover using Trim & Panel removal tools to avoid damage.

Fuse Purpose, Designation Ampere
10 A/C Air Conditioner, Fan / Blower Control 10
11 Instrument Cluster 5
12 Air Conditioner Control Unit 15
13 Steering Column,

Upper control panel

14 Ignition, Electronic Control Unit,
15 Compass,
Media Interface
16-18 Not Used

Fuse box in the back cargo compartment, trunk.

Fuse box in the rear of m-class w164

A second fuse box is located in the cargo compartment on the passenger side. You must remove the cover by twisting the two locking tabs to access these fuses. Here you will find relays and fuses 20 through 72.

Fuse Purpose Ampere
20 Radio Antenna filter 5
21 Aux, RCP 5
22 Parktronic,
Radio Remote Control
23 DVD Player,
24 Emergency tensioning retractor 40
25 COMAND, DVD changer, Radio, Stereo 15
26 Door control, Right front door. 25
27 Seat adjustment and memory, Passenger front. 30
28 Seat adjustment and memory, Driver 30
29 Emergency tensioning retractor left front. 40
30 Fuel pump,
Folding rear seat,
31 Seat ventilation,
Heated steering wheel
32 AIRmatic Air Suspension N51, if equipped with the adaptive dampening system. 15
33 Keyless Go Entry 25
34 Door control, Driver’s door 25
35 Sound system,
Amplifier and subwoofer
36 Tele Aid, Emergency Calling 10
37 Backup Camera 12-volt power 5
38 Battery module,
Digital TV tuner
39 Radio, Navigation, or Tire pressure monitor 7.5
40 Rear liftgate, rear door automatic closing 30
41 Overhead Control Panel 25
42 Overhead control panel 25
43 Fuel Pump 20
44 Power outlet, socket, 115v socket, cigarette lighter 20
45 Power outlet in the back by the second row 20
46 Cigarette Lighter Outlet 15
47 Door sill molding 10
48 Differential lock engages the unit,
AdBlue relay
49 Heated rear window 30
50 Rear wiper 15
51 Charcoal canister shutoff valve 5
52 Emergency Tensioning Retractor 5
53 AIRmatic Air Suspension,
Fuel Pump
54 Front SAM Control Unit N10 5
55 Instrument cluster,
Light Switch
56 AdBlue,
Fuel Pump
57 Fuel Pump 20
58 Central gateway 7.5
59 Head restraint 7.5
60  Glove light,
Engine Fuse and relays, Rear SAM Control Unit, Tele AID
61 SRS Airbag Restrain System 7.5
62 Passenger seat adjustment, front 30
63 Seat adjustment Front 30
64 Not used
65 Not used
66 Multicontour seat motor 30
67 Back A/C blower 25
68 Seat Heat, Seat Ventilation if equipped. 28
69 Differential lock, rear axle 30
70 Trailer Hitch Connection  Socket 20
71 Electrical Brakes for trailer 20
72 Trailer hitch 15

The relays are located in the back. 

Relay Purpose, Function
K Power for electric seat adjustment
L Trailer hitch connection
M Back window relay, heating.
N Circuit 15
O Fuel Pump
P Back Wiper
R Circuit 15R
S Power Supply
T Power for the center and rear outlet
U Trailer
V Spare

Engine Compartment Fuses W164

Fuse Box Chart in Engine Bay W164 m-class

You will also find a fuse box in the engine bay, behind the headlight on the passenger side. To access the fuses, pull the two locking tabs forward. Once the two tabs are unlocked, lift the cover.

Engine bay fuses

Fuse Purpose, Designation, Function Ampere
100 Windshield Wiper Motor 30
101 Purge Control Valve,
CDI Control
102 Transmission oil cooler pump,
Engine coolant pump
103 Engine Control Unit ME 20
104 Terminal 15
105 Engine Controls ME 15
106 not used
107 Air pump 40
108 AIRmatic Air Suspension 40
109 Electronic Stability Program ESP 25
110 Antitheft Alarm 10
111 Direct Select the Intelligent module 30
112 Lamps Headlamp Left and Right 7.5
113 Horn 15
114 Front SAM Control Unit 5
115 ESP 5
117 Distronic Unit 7.5
118 Engine Electronics ME Control Unit 5
119 CDI 5
120 Engine Control 10
121 Heater 20
122 Engine Starter 25
123 Fuel Filter Sensor 20
124 Power Steering, A/C Compressor 7.5
125 Electronics 7.5

Relays in the engine compartment

Relay Purpose, Function, Designation
A Wipers
B Wiper ON/OFF
C Coolant pump
D Engine
E Air pump
F Horn
G AIRMatic Compressor
H Circuit 15
I Starter

Resources and useful links.

If you are missing the fuse chart and want a copy of the original fuse list with the car, look at this posting.

What fuse type do I need to replace a blown fuse?

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.

fuse amere ratingWhen 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 match the blown fuse and the new fuse. This indicates the same ampere rating.

Make sure to close the fuse box covers properly. It is important to do so to avoid moisture from entering the fuse box. Moisture can cause rust and electrical problems.


Why do I need to know where the fuse box of my vehicle is?

  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.

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