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Fuse box diagram (fuse layout), location, and assignment of fuses and relays Mercedes-Benz S-Class, CL-Class (W220 & C215) (S280, S320, S350, S400 CDI, S430, S500, S600, S55, S65 AMG) (1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005).
Checking and Replacing Fuses
The fuses in your vehicle serve to close down faulty circuits. If a fuse blows, all the components on the circuit and their functions stop operating. If a fuse has blown, the inside element will be melted. Blown fuses must be replaced with fuses of the same rating, which you can recognize by the color and value. The fuse ratings are listed in the fuse allocation chart.
If a newly inserted fuse also blows, have the cause traced and rectified at a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.
Notice
- Before changing a fuse, secure the vehicle against rolling away and switch off all electrical consumers.
- Always disconnect the battery before servicing high current fuses.
- Always replace faulty fuses with the specified new fuses having the correct amperage. If you manipulate or bridge a faulty fuse or if you replace it with a fuse with a higher amperage, the electric cables could be overloaded. This could result in a fire. There is a risk of an accident and injury.
- Only use fuses that have been approved for Mercedes-Benz vehicles and which have the correct fuse rating for the system concerned. Otherwise, components or systems could be damaged.
Instrument Panel Fuse Box
The fuse panel is located on the passenger’s side of the dashboard.
| № | Fused function | A |
|---|---|---|
| 78 | Alarm signal horn with additional battery | 7.5 |
| Steering column module | ||
| EIS control unit | ||
| ME-SFI control unit | ||
| 79 | Instrument cluster | 5 |
| 80 | Upper control panel control unit | 10 |
| 81 | Data link connector | 10 |
| 82 | AAC [KLA] control and operating unit | 10 |
| Heating system delivery unit | ||
| 83 | Central gateway control unit | 10 |
| 84 | Instrument cluster | 5 |
| Data link connector | ||
| 85 | Instrument cluster | 5 |
| 86 | Front cigar lighter with ashtray illumination | 15 |
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Engine Compartment Fuse Box (Left)
It is on the left-hand side of the vehicle, when viewed in the direction of travel. Push the tabs (3) and remove the cover.
| № | Fused function | A |
|---|---|---|
| 1 | Wiper park heater relay | 40 |
| Special version: Not used | ||
| 2 | High pressure and return pump relay | 50 |
| 3 | Steering wheel adjustment, horizontal: | 15 |
| S relay 1, jacket tube longitudinal adjustment | ||
| S relay 2, jacket tube longitudinal adjustment | ||
| 4 | Steering wheel adjustment, vertical: | 15 |
| S relay 1, jacket tube, height adjustment | ||
| S relay 2, jacket tube height adjustment | ||
| 5 | Wiper On and Off relay | 40 |
| 6 | up to 31.8.02: Heater booster switch | 7.5 |
| as of 1.9.02: Not used | ||
| Special version: Hydraulic brake | 5 | |
| 7 | Special version: 2nd three-phase alternator | 7.5 |
| 8 | Special version: Hydraulic brake | 40 |
| 9 | up to 31.8.03: | 30 |
| Valid for air suspension: | ||
| AIRmatic with ADS control module | ||
| Valid for Active-Body-Control (ABC): | ||
| ABC control module | ||
| Special version: ADS, suspension control | ||
| as of 1.9.03: | 20 | |
| Valid for air suspension: | ||
| AIRmatic with ADS control module | ||
| Valid for Active-Body-Control (ABC): | ||
| ABC control module | ||
| 10 | Special version: | 15 |
| Windshield wiper water pump | ||
| Windshield washer water pump | ||
| Circuit 15 connector sleeve | ||
| Ignition coils | ||
| 11 | up to 31.8.02: Front cigar lighter with ashtray illumination | 15 |
| as of 1.9.02: VICS power supply separation point X137 | 5 | |
| 12 | up to 31.8.02: Sensor for vehicle-sensitive seat belt lock | 7.5 |
| as of 1.9.02: Not used | ||
| Special version: | ||
| Sensor for left side airbag and window airbag | ||
| Sensor for right side airbag and window airbag | ||
| 13 | Left front door control module | 40 |
| 14 | Special version: Hydraulic brake | 5 |
| 15 | Special version: Hydraulic brake | 40 |
| 16 | Stop light switch | 7.5 |
| 17 | C215: Vehicle-sensitive seat belt lock sensor | 7.5 |
| 18 | Valid for D-net portable CTEL (D2B) (preinstallation): | 5 |
| Portable CTEL connector | ||
| Valid for MB D-net telephone (D2B): | ||
| D2B interface for permanently installed telephone | ||
| Valid for MB D-net telephone (D2B) with Tele Aid emergency call system: | ||
| TELE AID control module | ||
| Valid for MB D-net telephone (D2B) with E-call emergency call system: | ||
| D2B-Interface fixed installation | ||
| Frequency selector control module | ||
| Emergency call control module | ||
| 19 | up to 31.8.02: Not used | 5 |
| as of 1.9.02: | ||
| Left front reversible emergency tensioning retractor (W220) | ||
| Right front reversible emergency tensioning retractor (W220) | ||
| Special version: Instrument cluster | 7.5 | |
| 20 | up to 31.8.02: | 5 |
| Instrument cluster | ||
| Datalink connector | ||
| as of 1.9.02: Not used | ||
| Special version: | 7.5 | |
| Diagnostic cables connector sleeve: | ||
| Instrument cluster | ||
| Data link connector | ||
| Separation point | ||
| Compact wiring harness/diagnosis module II, cockpit | ||
| Intermediate connector | ||
| Diagnosis/taillamp wiring harness 16-pin | ||
| Measuring connector | ||
| Data link connector | ||
| 21 | up to 31.8.02: Instrument cluster | 5 |
| as of 1.9.02: Not used | ||
| Special version:Instrument cluster | 7.5 | |
| 22 | up to 31.8.02: Instrument cluster | 5 |
| as of 1.9.02: COMAND operating, display and control unit | 15 | |
| as of 1.9.03; Japan version: COMAND operating, display and control unit | 7.5 | |
| Special version:Instrument cluster | ||
| 23 | up to 31.8.02: | 10 |
| Climate control: | ||
| AAC [KLA] control and operating module | ||
| Circulation pump | ||
| Left duovalve | ||
| Right duovalve | ||
| as of 1.9.02 up to 31.8.03: TV tuner | 7.5 | |
| as of 1.9.02: | ||
| Operating and display unit rear screen | ||
| CD player with changer (in luggage compartment) | ||
| 24 | up to 31.8.02: Diagnostic connector | 10 |
| as of 1.9.02: Audio gateway control module | 20 | |
| Special version: | 10 | |
| Diagnostic cables connector sleeve: | ||
| Instrument cluster | ||
| Data link connector | ||
| Separation point | ||
| Compact wiring harness/diagnosis module II, cockpit | ||
| Intermediate connector | ||
| Diagnosis/taillamp wiring harness 16-pin | ||
| Measuring connector | ||
| Data link connector | ||
| 25 | up to 31.8.02: Not used | 25 |
| as of 1.9.02: Sound amplifier | ||
| Special version: Jacket tube module | 10 | |
| 26 | up to 31.8.02: Upper control panel control module | 10 |
| as of 1.9.02: Not used | ||
| 27 | Not used | - |
| A | Wiper park heater relay | |
| B | Relay for c.15 | |
| C | Relay for c.15R | |
| D | Steering column forward/back adjustment relay 1 | |
| E | Steering column forward/back adjustment relay 2 | |
| F | High pressure and return pump relay | |
| G | Wiper position 1 and 2 relay | |
| H | Wiper on and off relay | |
| I | Steering column height adjustment relay 1 | |
| J | Steering column height adjustment relay 2 | |
| V | Special version: Brake booster hydraulic unit relay | |
| W | Special version: Brake booster hydraulic unit safety relay | |
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Engine Compartment Fuse Box (Right)
It is on the right-hand side of the vehicle, when viewed in the direction of travel. Push the tabs (3) and remove the cover.
| № | Fused function | A |
|---|---|---|
| 28 | Fanfare horns relay | 15 |
| 29 | Motor electronics/chassis relay | 20 |
| Special version: Motor electronics/chassis relay | 10 | |
| 30 | Motor electronics/chassis relay | 20 |
| 31 | Air pump relay | 40 |
| 32 | Air compressor relay | 40 |
| 33 | Heating systems recirculation unit | 40 |
| Special version: Electric suction-type fan | 60 | |
| 34 | up to 31.8.02: | 5 |
| Traction system control module: | ||
| Control module for ESP, SPS and BAS (electronic stability program (ESP), speed sensitive power steering (SPS), brake assist (BAS)) | ||
| as of 1.9.02: | 10 | |
| Traction system control module: | ||
| Control module for ESP, SPS and BAS (electronic stability program (ESP), speed sensitive power steering (SPS), brake assist (BAS)) | ||
| 35 | up to 31.8.02: Not used | - |
| as of 1.9.02: Valid for steering wheel heater: DC/DC converter control unit | 15 | |
| Special version: | 40 | |
| Heating systems recirculation unit | ||
| Blower regulator | ||
| Blower motor | ||
| 36 | with Distronic: DTR control module | 7.5 |
| 37 | ETC [EGS] control unit | 15 |
| Electronic selector lever module control unit | ||
| VGS electric control unit | ||
| 38 | USA version:Luggage compartment interior button (KIT) | 5 |
| 39 | Right front door control module | 40 |
| 40 | With Xenon headlamps : | 10 |
| Headlamp range adjustment control module | ||
| 41 | With stationary heater: | 20 |
| STH radio remote control receiver | ||
| STH heater unit (C215) | ||
| STH heater unit or heater booster heater unit (W220) | ||
| 42 | Auxiliary air unit relay | 20 |
| Special version: | ||
| Transmission oil fan motor relay | ||
| Engine oil fan unit: Temperature switch (100 °C) | ||
| 43 | Diesel engine only: | 25 |
| CDI control module | ||
| Starter relay, right front fuse and relay module | ||
| Fuel pump relay (OM648 only) | ||
| 44 | OM613: | 7.5 |
| CDI control module | ||
| Intake manifold heating, right front fuse and relay module | ||
| 44 | OM628: | 10 |
| CDI control module | ||
| Starter relay, right front fuse and relay module | ||
| Engine and AC electric suction fan with integrated control | ||
| Charge fan circulation pump | ||
| OM648: | ||
| CDI control unit | ||
| CDI relay | ||
| AAC with integrated control additional fan motor | ||
| 45 | Not used | - |
| 46 | with Active-Body-Control (ABC): ABC control module | 5 |
| with air suspension: AIRmatic with ADS control module | ||
| 47 | AAC multifunction sensor | 10 |
| Control unit box blower motor | ||
| Automatic air conditioning multifunction sensor (valid for right-hand drive) | ||
| Coolant temperature switch (100 °C) | ||
| Special version: Multi-function sensor | 7.5 | |
| 48 | M112/113; up to 31.8.02: Suction-type fan control module | 7.5 |
| M137; up to 31.8.02: Engine and AC electric suction fan with integrated control | ||
| Special version: Suction fan control module | ||
| 49 | Ignition coil (T1/1) up to (T1/8) | 15 |
| Radio interference suppression capacitor | ||
| Special version: Suction fan control module | 7.5 | |
| K | Engine electronics/chassis relay | |
| L | Starter relay | |
| M | Only valid for diesel: CDI relay | |
| N | Secondary air pump relay | |
| O | Air compressor relay | |
| P | Fanfare horns relay | |
| V | Special version: Brake booster hydraulic unit relay | |
| W | Special version: Brake booster hydraulic unit safety relay | |
Engine Compartment Additional Fuse Box
It is on the right front of the engine compartment.
| № | Fused function | A |
|---|---|---|
| 87 | Motronic relay | 20 |
| 88 | Motronic relay | 20 |
| 89 | Not used | - |
| 90 | Charge air cooler circulation pump | 10 |
| 91 | as of 1.9.03: Intank fuel pump | 10 |
| V | Motronic relay | |
| W | Charge air relay | |
| X | Intank fuel pump relay | |
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Fuse Box Below Right Rear Seat
| № | Fused function | A |
|---|---|---|
| 50 | Rear window roller blind relay | 10 |
| 51 | Towing sensor relay | 5 |
| 52 | Fuel pump relay | 30 |
| 53 | Rear window defroster relay | 50 |
| 54 | Trailer recognition control module | 10 |
| Special version: Automatic fire warning and extinguishing system | ||
| 55 | Trailer hitch socket (13-pin) | 25 |
| Special version: PAS and special signal system | 30 | |
| 56 | Trailer recognition control module | 30 |
| Special version: Hydraulic window lift mechanism | 40 | |
| 57 | Valid for remote trunk locking (HDFS): | 25 |
| Trunk lid open relay | ||
| Trunk lid closed relay | ||
| Remote trunk closing hydraulic pump | ||
| Special version: Not used | ||
| 58 | Keyless Go: | 7.5 |
| Keyless Go control module | ||
| Keyless Go left front door antenna | ||
| Keyless Go left rear door antenna (W220) | ||
| Keyless Go left rear antenna (C215) | ||
| Keyless Go right front door antenna | ||
| Keyless Go right rear door antenna (W220) | ||
| Keyless Go right rear antenna (C215) | ||
| Keyless Go left front door lift solenoid | ||
| Keyless Go left rear door lift solenoid (W220) | ||
| Keyless Go right front door lift solenoid | ||
| Keyless Go right rear door lift solenoid (W220) | ||
| Special version: Automatic fire warning and extinguishing system | ||
| 59 | Taxi version:Special vehicle multifunction control module (SVMCM) | 30 |
| Special version: PAS MCS | ||
| 60 | up to 31.8.02: Not used | 7.5 |
| as of 1.9.02: | ||
| Navigation processor | ||
| VICS voltage supply separation point | ||
| Rear window antenna amplifier module | ||
| 61 | up to 31.8.02: | 15 |
| Radio | ||
| Rear window antenna amplifier module | ||
| CD player with changer (in luggage compartment) | ||
| COMAND operating, display and control module | ||
| Telephone circuit connector 15C | ||
| TV tuner | ||
| Video decoder | ||
| Relief relay, circuit 15 | ||
| Navigation processor | ||
| Traffic data recorder | ||
| as of 1.9.02: | 7.5 | |
| Hands-free system control unit | ||
| Voice control system control unit | ||
| Portable CTEL connector | ||
| E-Call control unit | ||
| Telephone transmitter/receiver, D2B | ||
| Selection switch for telephone handset, front and rear (W220) | ||
| CTEL interface | ||
| CTEL compensator | ||
| Telephone interface | ||
| Telephone transmitter/receiver and TELE AID, D2B | ||
| Telecommunications control unit (as of 1.9.03) | ||
| Bluetooth module (as of 1.9.03) | ||
| Rear telephone handset (as of 1.9.03 W220) | ||
| E-net compensator (as of 1.9.03) | ||
| Operating and display unit display in rear (as of 1.9.03) | ||
| GPS box control unit (as of 1.6.04) | ||
| Universal Portable CTEL Interface (UPCI [UHI]) control unit (as of 1.6.04) | ||
| Emergency call system control unit (as of 1.6.04) | ||
| Special version: Not used | ||
| 62 | Pneumatic system equipment with combined functions | 20 |
| ATA inclination sensor (Special version) | ||
| 63 | up to 31.8.02: | 7.5 |
| D2B interface for permanently installed telephone | ||
| CTEl transmitter / receiver if emergency call system (TELE AID) fitted, | ||
| TELE AID control module | ||
| Voice control system control module if emergency call system (TELE AID) fitted, | ||
| Portable CTEL connector | ||
| Traffic data recorder | ||
| as of 1.9.02: Pneumatic pump for dynamic seat control | 30 | |
| 64 | up to 31.8.02: | 7.5 |
| COMAND operating, display and control module | ||
| Rear window antenna amplifier module | ||
| as of 1.9.02: Left front seat adjustment control unit with memory | 25 | |
| Special version: | 5 | |
| D2B interface for permanently installed telephone | ||
| D2B interface for portable cellular telephone | ||
| 65 | Special version: D2B interface for portable cellular telephone | 5 |
| 66 | up to 31.8.02:Sound amplifier | 25 |
| as of 1.9.02: Right front seat adjustment control unit with memory | ||
| Special version: Interior lamp with universal joint | 7.5 | |
| 67 | Rear seats control module (not in the case of C215) | 25 |
| 68 | Rear air conditioning control module | 15 |
| Rear AC refrigerant shutoff valve | ||
| Delivery unit for rear heating system | ||
| Circulation pump | ||
| Left duovalve | ||
| Right duovalve | ||
| 69 | Valid for rear air conditioning: Rear air conditioning control module | 15 |
| 70 | Tire pressure monitor control module | 10 |
| 71 | up to 31.8.02: Left front seat adjustment control module with memory | 25 |
| as of 1.9.02: Left front reversible emergency tensioning retractor | 40 | |
| 72 | Rear control unit (C215) | 40 |
| Left rear door control module (W220) | ||
| 73 | up to 31.8.02: Right front seat adjustment control module with memory | 25 |
| as of 1.9.02: Right front reversible emergency tensioning retractor | 40 | |
| 74 | Rear control unit (C215) | 40 |
| Right rear door control module (W220) | ||
| 75 | With Parktronic system: PTS control module | 10 |
| 76 | Rear backrest refrigerator box | 15 |
| 77 | Overhead control panel control unit | 40 |
| Q | Rear window roller blind relay | |
| R | Towing sensor relay | |
| S | Circuit 15 relay | |
| T | Fuel pump relay | |
| U | Rear window defroster relay | |
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