Mercedes E320 W211 Horn Relay Diagram
Fuse box diagram (fuse layout), location, and assignment of fuses and relays Mercedes-Benz E-Class W211 (E200, E220, E230, E240, E270, E280, E300, E320, E350, E400, E420, E500, E55 & E63 AMG) (2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009).
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 (located near the instrument panel fuse block).
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. Only use fuses marked with an "S". Otherwise, components or systems could be damaged.
Instrument Panel Fuse Box
The fuse panel is located on the side of dash panel.
| № | Fused function | A |
|---|---|---|
| Feed-in: Rear prefuse box | 150 | |
| 21 | Right rear door control unit | 25 30 (1) |
| 22 | Right front door control unit | 25 30 (1) |
| 23 | Front passenger front seat adjustment control unit with memory | 30 |
| 24 | Circuit 30 connector sleeve, Keyless Go | 25 |
| 25 | Stationary heater unit | 25 |
| In addition fused via polyswitch fuse for stationary heater: Stationary heater radio remote control receiver | 5 | |
| 26 | CD changer | 7.5 |
| 27 | Terminal 15 relay (as of 2007) | 5 |
| 28 | Radio | 5 |
| COMAND operating, display and control unit | ||
| Radio control panel and navigation unit | 15 | |
| COMAND operating, display and control unit | ||
| 29 | Steering column module | 7.5 |
| EIS [EZS] control unit | ||
| up to 2006: DC/DC converter control unit | 15 | |
| 30 | Data link connector | 7.5 |
| 31 | Upper control panel control unit | 5 |
| Cutoff relay for interruptible loads (2006-2007) | ||
| up to 2006: Driver-side SAM control unit with fuse and relay module | 7.5 | |
| 32 | Left rear door control unit | 30 |
| 33 | Left front door control unit | 30 |
| 34 | Driver-side front seat adjustment control unit, with memory | 30 |
| 35 | WSS (Weight Sensing System) control unit (as of 2007; USA) | 5 |
| 36 | Heated seats and seat ventilation control unit | 25 |
| 37 | AIRmatic with ADS control unit | 15 |
| 38 | NECK-PRO head restraints relay | 7.5 |
| 39 | Lower control panel control unit | 5 |
| 40 | Heated seats and seat ventilation control unit | 10 |
| up to 2006: Upper control panel control unit | 5 | |
| 41 | Central gateway control unit | 5 |
| 42 | Cutoff relay for interruptible loads (up to 2006) | 7.5 |
| ME-SFI [ME] control unit | ||
| Valid for engine 629, 642, 646 EVO: Terminal 87 relay, engine | ||
| Driver-side SAM control unit with fuse and relay module (engine 271, 272, 628, 629, 642, 646, 647, 648) | ||
| CNG control unit (engine 271) | ||
| 1) as of 2007 | ||
Front prefuse box
It is in the front passenger's footwell.
| № | Fused function | A |
|---|---|---|
| Feed-in: Battery (G1) | ||
| 68 | Valid for engine 629, 642, 646, 647, 648: Heater booster | 200 |
| 69 | Valid for engine 629, 642, 646 EVO: Glow time output stage | 150 |
| 70 | External start terminal point | - |
| 71 | Valid for engine 112, 113, 156, 271, 272, 273, 629, 642, 646, 647, 648: AAC with integrated control additional fan motor | 150 |
| Valid for engine 629, 642, 646 EVO:Engine and AC electric suction fan with integrated control | 100 | |
| 72 | Traction system hydraulic unit | 50 |
| 73 | Traction system hydraulic unit | 40 |
| as of 2007: ESP control unit | ||
| 74 | AIRmatic relay | 40 |
| 75 | Right SAM control unit | 40 |
| 76 | Right front reversible emergency tensioning retractor | 40 |
| Engine 113.990 (E 55 AMG): Air injection relay | ||
| 77 | Blower motor | 40 |
| Heating systems recirculation unit | ||
| Solar generator control unit |
Engine Compartment Fuse Box Diagram
| № | Fused function | A |
|---|---|---|
| 43 | Valid for engine 112, 113, 156, 271, 272, 273: ME-SFI [ME] control unit | 15 |
| Valid for engine 271, 272, 273: ME control unit | ||
| Valid for engines 628, 629, 642, 646, 647, 648: | ||
| CDI control unit | ||
| Driver-side SAM control unit with fuse and relay module | ||
| Rear SAM control unit with fuse and relay module | ||
| Valid for engine 629, 642, 646, 647, 648: | ||
| CDI control unit | ||
| Rear SAM control unit with fuse and relay module | ||
| 44 | Valid for engine 646, 647, 648: CDI control unit | 15 |
| Valid for engine 271, 272, 273: ME-SFI [ME] control unit | ||
| Valid for engine 271 (Bivalent natural gas drive): | ||
| Cyl. 1 gas injection valve | ||
| Cyl. 2 gas injection valve | ||
| Cyl. 3 gas injection valve | ||
| Cyl. 4 gas injection valve | ||
| 45 | AIRmatic with ADS control unit | 7.5 |
| Electronic selector lever module control unit (Automatic five-speed transmission (NAG)) | ||
| Rear axle level control system control unit | ||
| Gear recognition switch (Sequentronic automated manual transmission (SEQ)) | ||
| 46 | ETC [EGS] control unit (Automatic 5-speed transmission (NAG)) | 7.5 |
| VGS electric control unit (automatic 7-speed transmission) | ||
| Automated manual transmission control unit (Sequentronic automated manual transmission (SEQ)) | ||
| 47 | ESP, SPS [PML] and BAS control unit | 5 |
| 48 | Restraint systems control unit | 7.5 |
| Left front reversible emergency tensioning retractor (as of 2007) | ||
| Right front reversible emergency tensioning retractor (as of 2007) | ||
| 49 | Restraint systems control unit | 7.5 |
| Front passenger seat occupied and child seat recognition sensor | ||
| NECK-PRO head restraints relay | ||
| 50 | Portable CTEL separation point | 5 |
| VICS power supply separation point | ||
| Emergency call system control unit | ||
| 51 | Spare | 5 |
| 52 | Exterior lamp switch | 7.5 |
| Instrument cluster | ||
| Glove compartment illumination with switch | ||
| AAC with integrated control additional fan motor (as of 2007) | ||
| Bi-xenon headlamp unit: Headlamp range adjustment control unit | ||
| 53a | Spare | 15 |
| 53b | Fanfare horn relay | 15 |
| 54a | Illuminated cigar lighter | 15 |
| 54b | Illuminated cigar lighter | 15 |
| 55 | Telephone handset (up to 2007) | 7.5 |
| Bluetooth module connector (up to 2007) | ||
| Portable CTEL separation point | ||
| Emergency call system control unit (as of 2007) | ||
| 56 | Wiper motor | 40 |
| 57 | Valid for engine 628, 646, 647, 648: CDI control unit | 25 |
| Valid for engine 271, 272, 273: | ||
| ME-SFI [ME] control unit | ||
| Purge control valve | ||
| PremAir Sensor | ||
| USA version:Activated charcoal canister shut-off valve | ||
| 58 | Valid for engine 112, 113, 156: | 15 |
| Cylinder 1 ignition coil | ||
| Cylinder 2 ignition coil | ||
| Cylinder 3 ignition coil | ||
| Cylinder 4 ignition coil | ||
| Cylinder 5 ignition coil | ||
| Cylinder 6 ignition coil | ||
| Cylinder 7 ignition coil | ||
| Cylinder 8 ignition coil | ||
| 59 | Starter relay | 15 20 (1) |
| 60 | Oil cooler fan (E55 AMG, E63 AMG) | 10 |
| 61 | Electric air pump | 40 |
| 62 | SEQ pump control relay (Sequentronic automated manual transmission (SEQ)) | 30 |
| 63 | Automated manual transmission control unit (Sequentronic automated manual transmission (SEQ)) | 15 |
| Valid for engines 112, 113: | ||
| Circuit 87 relay, engine | ||
| ME-SFI [ME] control unit | ||
| 64 | Exterior lamp switch | 7.5 |
| Instrument cluster | ||
| AAC [KLA] control and operating unit | ||
| Comfort AAC [KLA] control and operating unit | ||
| Steering column module (up to 2007) | ||
| 65 | IS [EZS] control unit | 20 |
| Electric steering lock control unit | ||
| 66 | Right front lamp unit | 7.5 |
| Left front lamp unit | ||
| HRA [LWR] selector wheel (as of 2007) | ||
| Bi-xenon headlamp unit: HRA power module | ||
| 67 | Stop light switch | 5 |
| | ||
| I | Terminal 87 relay, engine | |
| K | Terminal 87 relay, chassis | |
| L | Starter relay | |
| M | SEQ pump control relay | |
| N | Terminal 15 relay | |
| O | Fanfare horn relay | |
| P | Terminal 15R relay | |
| R | Air pump relay (except engine 113.990 (E55 AMG), 156.983 (E63 AMG)) | |
| Oil cooler fan (only engine 113.990 (E55 AMG), 156.983 (E63 AMG)) | ||
| S | Airmatic relay | |
| 1) as of 2007 | ||
Luggage Compartment Fuse Box
It is behind the trim panel on the left side of the trunk.
| № | Fused function | A |
|---|---|---|
| 1 | Front passenger partially-electric seat adjustment switch | 30 |
| Driver-side front seat adjustment control unit, with memory | ||
| 2 | Driver partially-electric seat adjustment switch | 30 |
| Passenger-side front seat adjustment control unit with memory | ||
| 3 | Tire pressure monitor control unit | 7.5 |
| PARKTRONIC control unit | ||
| TV combination tuner (analog/digital) | ||
| Navigation processor | ||
| 4 | Except engine 113.990 (E55 AMG), 156.983 (E 63 AMG): Fuel pump | 15 20 (1) |
| Engine 113.990 (E55 AMG): Charge air cooler circulation pump | 15 | |
| 5 | - | - |
| 6 | Audio gateway control unit | 40 |
| 7 | Rear-end door control unit | 15 |
| 8 | Left antenna amplifier module | 7.5 |
| ATA [EDW] inclination sensor | ||
| Alarm horn | ||
| 9 | Overhead control panel control unit | 25 |
| 10 | Heated rear window | 40 |
| 11 | Rear-end door control unit | 20 |
| 12 | Cargo area connector box | 15 |
| 13 | Interior socket | 15 |
| 14 | - | - |
| 15 | Fuel filler flap CL [ZV] motor | 10 |
| 16 | Seat heating and seat ventilation control unit | 20 |
| 17 | Trailer connection unit control unit | 20 |
| 18 | Trailer connection unit control unit | 20 |
| 19 | Multicontour seat pneumatic pump | 20 |
| 20 | Rear window roller blind relay | 7.5 |
| | ||
| A | Fuel pump relay (except engine 113.990 (E55 AMG), 156.983 (E 63 AMG)) | |
| Engine 113.990 (E55 AMG): Charge air cooler circulation pump relay | ||
| B | Relay 2, terminal 15R | |
| C | Spare relay 2 | |
| D | Rear wiper relay | |
| E | Heated rear window relay | |
| F | Relay 1, terminal 15R | |
| G | Fuel filler cap polarity reverser relay 1 | |
| H | Fuel filler cap polarity reverser relay 2 | |
| 1) as of 2007 | ||
Rear prefuse box
It is near the battery under the trunk floor.
| № | Fused function | A |
|---|---|---|
| Feed-in: Battery | ||
| 78 | Driver-side SAM control unit with fuse and relay module | 200 |
| 79 | Rear SAM control unit with fuse and relay module | 200 |
| 80 | Driver-side SAM control unit with fuse and relay module | 150 |
| 81 | Interior fuse box | 150 |
| 82 | Valid for engine 113.990 (E55 AMG), 156.983 (E63 AMG):Fused via terminal 30 connector sleeve: Fuse F82A and F82B | 150 |
| F82A | Fuse for left fuel pump control unit (156.983 (E63 AMG)) | 40 |
| Fuse for right fuel pump control unit (156.983 (E63 AMG)) | ||
| Fuel pump relay (113.990 (E55 AMG), 156.983 (E63 AMG)) | 30 | |
| F82B | Air injection relay fuse | 40 |
| 83 | Taxi version: Special vehicle multifunction control unit (SVMCU [MSS]) | 30 |
| 84 | Battery sensor | 5 |
| 85 | Telephone interface | 5 |
| Universal Portable CTEL Interface (UPCI [UHI]) control unit | ||
| Hands-free system control unit | ||
| Voice control system control unit | ||
| 86 | Interior socket (5A - up to 2003; 30A - 2004-2006; 5A - as of 2007) | |
| USA version: SDAR control unit | 5 | |
| Valid for government vehicles:Special vehicle multifunction control unit (SVMCU [MSS]) | 30 | |
| Taxi version:Special vehicle multifunction control unit (SVMCU [MSS]) | ||
| 87 | Pneumatic pump for dynamic seat control | 30 |
| 88 | TLC [HDS] control unit | 30 |
| Rear-end door closing control unit | ||
| 89 | Loading floor control unit | 40 |
| 90 | Left front reversible emergency tensioning retractor | 40 |
| Special vehicle multifunction control unit (SVMCU [MSS]) | ||
| Up to 02/03 for engine 113.990 (E55 AMG): Fuel pump relay | 30 | |
| 91 | Special vehicle multifunction control unit (SVMCU [MSS]) | 40 |
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Source: https://fusecheck.com/mercedes-benz/mercedes-benz-e-class-w211-2002-2009-fuse-diagram
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