Mercedes ML W163 is the first generation of Mercedes-Benz M-class SUV which was produced in 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 and 2005 in various modifications (ML 230, ML 320, ML 350, ML 430, ML 500, ML 55 AMG, ML 270 CDI, ML 400 CDI). During this time, the model has been restyled. In this article you will find information about the location of electronic control units, a detailed description of the fuses and relays for the Mercedes ML 163 with box diagrams and photo examples of performance. Select the fuse responsible for the cigarette lighter.
The location of the blocks and the purpose of the elements in them may differ from those presented and depend on the year of manufacture and the level of electrical equipment.
Example diagram with cover
Location
Layout
Assignment
| 1 | Air conditioning control unit – behind the audio unit (^08/01) |
| 2 | Air conditioning/heater electronic control unit-in air conditioning/heater control panel (09/01^) |
| 3 | Heater/air conditioner fan motor resistor – near fan motor |
| 4 | Sunlight sensor (air conditioning system) |
| 5 | Antenna unit – tailgate |
| 6 | Anti-theft control unit (integrated with multifunctional control unit) |
| 7 | Vehicle tilt sensor (anti-theft system) (integrated with trip computer) |
| 8 | Anti-theft horn – engine compartment |
| 9 | Volume change sensor (anti-theft system) (integrated with trip computer) |
| 10 | Audio Output Amplifier (If Equipped) – Behind Left Side of Dashboard |
| 11 | Accumulator battery |
| 12 | Brake Booster Vacuum Pump – Left Side of Engine Compartment |
| 13 | Brake booster vacuum pump control unit – left side of the engine compartment |
| 14 | Compass control unit (navigation system) – under the trim panel, near the rear door latch |
| 15 | Diagnostic connector (DLC) |
| 16 | Fuse/Relay Box, Engine Compartment |
| 17 | Fuse/Relay Box, Footwell |
| 18 | Headlight control unit, left (models with xenon headlights) |
| 19 | Headlight control unit, right (models with xenon headlights) |
| 20 | Horns – behind the front bumper |
| 21 | Immobilizer control unit – attached to multifunctional control unit 2(12/99^) |
| 22 | Immobilizer ring antenna – in the ignition switch |
| 23 | Turn signal/alarm relay – in multifunction control box 1 |
| 24 | Sunlight sensor – top center windshield |
| 25 | Multifunction Control Module 1 – Attached to Engine Compartment Fuse/Relay Box – Functions: Interior lamps 1, exterior lamps, horns, windshield wipers, A/C pressure monitoring, central locking, power windows, direction indicators, anti-theft system , sunroof, seat heaters, immobilizer (^11/99) |
| 26 | Multifunctional control unit 2-functions: Central locking, headlight washers, rear window defroster, seat heaters, air conditioning condenser fan motor, interior lamps |
| 27 | Navigation control unit (integrated with audio system) – (if equipped) |
| 28 | Ambient temperature sensor |
| 29 | Parking system control unit – behind switch panel |
| 30 | Rain sensor – upper center windshield |
| 31 | Additional fuse 1 next to the battery |
| 32 | Auxiliary fuse 2 (FL7,5/10A), engine control – in fuse box – Diesel |
| 33 | Power seat control unit (with memory), front left – under the seat |
| 34 | Power seat control unit (with memory), front right – under the seat |
| 35 | Side impact sensor, left – B-pillar lower (09/01^) |
| 36 | Side impact sensor, right – B-pillar lower (09/01^) |
| 37 | SRS electronic control unit |
| 38 | Phone interface control unit – under the front seat |
| 39 | Transfer box control unit |
| 40 | Transfer case select motor – on transfer case |
| 41 | Electronic gearbox control unit |
| 42 | Shift control unit – automatic transmission selector |
| 43 | Trip computer |
Passenger compartment
In the Mercedes ml 163 cabin, the fuse and relay box is located under the instrument panel, on the rack and is closed with a protective cover. To open it, you need to turn 2 fasteners 90 degrees. The box itself will look something like this.
Original diagram
Type 1
Designation
| F1 | 7.5A Passenger airbag deactivation indicator |
| F2 | 20A Cigarette lighter front |
| F3 | 15A Rear window wiper motor |
| F4 | 40A A/C/heater fan motor, front |
| F5 | 7.5A Instrument cluster, air conditioning |
| F6 | 20A Accessory Power Connector |
| F7-9 | — |
| F10 | 35A Driver’s seat adjustment switch block |
| F11 | 35A Passenger seat adjustment switch block |
| F13 | Fuel pump / fuel level sensor |
| F16 | — |
| F17 | 25A Heated rear window |
| F18 | — |
| F19 | 30A Headlight washer pump |
| F20 | 7.5A Right headlight – high beam |
| F21 | 7.5A High beam – left headlight, high beam indicator |
| F22 | — |
| F23 | — |
| F24 | 25A Electric rear windows |
| F25 | 25A Power windows, front |
| Relay | |
| 1 | Electric seat |
| 2 | Gasoline pump |
| 3 | — |
| 4 | Rear window heating |
| 5 | Headlight washer pump |
| 6 | Headlights – high beam |
| 7 | — |
| 8 | Main ignition circuits |
| 9 | |
Type 2
Allocation
| F1 | 7.5A Passenger airbag deactivation indicator |
| F2 | 20A Cigarette lighter fuse |
| F3 | 15A Rear window wiper motor |
| F4 | – |
| F5 | 7.5A Instrument cluster, air conditioning system |
| F6 | 20A Accessory Power Connector |
| F7 | – |
| F8 | 20A Heated front seats |
| F9 | – |
| F10 | 30A Driver’s seat adjustment switch block |
| F11 | 30A Passenger seat adjustment switch block |
| F13 | 20A Gasoline pump / fuel level sensor |
| F16 | – |
| F17 | 25A Heated rear window |
| F18 | – |
| F19 | 30A Headlight washer pump |
| F20-25 | |
| F26 | 70A Relay main ignition circuits |
| Relay | |
| 1 | Power seats |
| 2 | Gasoline pump |
| 3 | |
| 4 | Rear window heating |
| 5 | Headlight washer pump |
| 6 | |
| 9 | Main ignition circuits |
In both versions of the Mercedes ML W163, fuse number 2 is responsible for the operation of the front cigarette lighter. The rest of the fuses are located in the fuse box under the hood.
Engine compartment
Under the hood, the main fuse and relay box is located on the left side behind the protective cover. To access it, you need to press the latches.
Photo example
Check the information with your diagrams on the back of the protective cover of the unit.
Diagram
Appointment
| F1 | 15A Accessory connector, front |
| F2 | 7.5A Left direction indicators |
| F3 | 15A Right headlight – high beam |
| F4 | 20/30A Sunroof motor |
| F5 | 7,A High beam – left headlight, high beam indicator |
| F6 | 7.5A Rear wiper motor 20A Heated seats |
| F7 | 15/30A Windshield wiper/washer, hazard switch |
| F8 | 25A Transfer box control unit |
| F9 | 7.5A License plate lamps, switch illumination |
| F10 | 10A Audio system, vanity mirror lights, trip computer, glove box light, cigarette lighter fuse, SRS indicator, interior rearview mirror |
| F11 | 10/15A Engine management system (petrol) |
| F12 | 7.5A Front left/rear left lamps |
| F13 | 10A Interior lamps, trip computer, seat belt indicator, steering wheel position sensor, diagnostic connector |
| F14 | 10/25A Engine management system (Diesel) |
| F15 | 10A Brake lights |
| F16 | 15A Diagnostic connector, reversing light switch, A/C control unit, air intake changeover flap motor |
| F17 | 15/20A Accessory power connector, luggage compartment |
| F18 | 25A Trailer electrical connector |
| F19 | 15A Engine management system (petrol) |
| F20 | 15A Power door mirrors |
| F21 | 15/25A Audio system, Telephone |
| F22 | 15A automatic transmission, transfer case control unit, traction control, cruise control, steering wheel position sensor |
| F23 | 15A Headlight range control unit |
| F24 | 7.5A Front Right/Rear Right Lamps |
| F25 | 7.5A Right direction indicators |
| F26 | 15A Engine management system (petrol) |
| F27 | 40A Traction Control System (TCS) |
| F28 | 20A Seat heating |
| F29 | 30A Multifunction switch – power windows |
| F30 | |
| F31 | 15A Power sunroof switch, power door mirrors, power rear windows |
| F32 | 30A Right front seat power |
| F33 | 30A Power front left seat |
| F34 | 7,5A Left headlight – dipped beam, headlight range control |
| F35 | 7.5A Right headlight – low beam |
| F36 | 10/25A Heated rear window 20A Horn |
| F37 | 20A Horn |
| F38 | 20A Fuel module (fuel pump) / fuel level sensor |
| F39 | — |
| F40 | 25A Brake booster vacuum pump (ML270CDI) or Audio system |
| F41 | Coolant Pump Motor, Cooling Fan Motor Fuse Box/Relay Auxiliary Heater |
| F42 | 20A Central locking |
| F43 | 20/30A Heater Fan Motor Relay, Heater/A/C Fan Motor Relay (Rear) |
| F44 | 30A A/C condenser fan motors 15A Rear window washer pump, A/C condenser fan motor relay (except ML320/ML350) |
| F45 | 40A EGR vacuum pump motor |
| F46 | 7,5/15A Rear PTF |
| F47 | 15A Front fog lights |
| F48 | 20A Anti-theft signal |
| Relay | |
| 1 | Rear window heating |
| 2 | Cooling fan |
| 3 | Fuel pump relay (except ML270CDI) |
| 4 | Left turn signal |
| 5 | License plate lights, instrument cluster |
| 6 | Disabling brake lights (ESP) |
| 7 | Right direction indicators |
| 8 | Starter |
| 9 | Right front / rear dimensions |
| 10 | — |
| 11 | Main Ignition Circuits (ML270CDI) |
| 12 | Main ignition circuits |
| 13 | left front / rear dimensions |
| 14 | Power windows |
| 15 | Central locking – unlocking the rear door |
| 16 | Passenger power window drive |
| 17 | Intermittent windshield wiper |
| 18 | Driver’s power window drive |
| 19 | Coolant pump |
| 20 | Central locking – door lock |
| 21 | Heater Fan, Fuse/Relay Box Cooling Fan Either Central Locking |
| 22 | dipped headlights |
| 23 | Central Locking Relay – Unlock Passenger’s Door and Rear Side Doors |
| 24 | Central locking relay – driver’s door unlock |
| 25 | ABS pump |
| 26 | Air conditioning condenser fan |
| 27 | Rear window washer pump |
| 28 | Exhaust air supply pump |
| 29 | Rear fog lights |
| 30 | Front fog lights |
| 31 | Horn (with anti-theft system) |
If you know how to make the material better – write in the comments.
Thank you for the information posted here it is very helpful. I have a 2001 ML320, I am looking for the exact location of the Transmission Control Relay. I have looked in many links hoping to locate the location with no success. Can anyone help me and Thank you.