The Mercedes-Benz Sprinter is a line of light commercial vehicles. The second-generation model (chassis code W906, also known as NCV3) was introduced in 2006 and received a facelift in 2013. Below are detailed fuse box diagrams and relay assignments for the Mercedes-Benz Sprinter NCV3 (2nd Gen / chassis code W906) across model years 2006 through 2018.
Here you will find fuse panel locations, diagrams, and photos of power distribution centers. Fuses for the “Cigarette Lighter” and “Fuel Pump” are highlighted in bold.
In the Passenger Compartment
Three power distribution panels located in this area protect the vehicle's electrical circuits.
Fuse Box #1 (Main Fuse Panel)
The main fuse box is located under the dashboard on the driver's side.
Overview of the Mercedes-Benz Sprinter interior fuse box.
| Diagram | ||
|---|---|---|
|
||
| Fuse No. | Circuit Protected / Function | Rating (A) |
| F1 | Horn | 15 |
| F2 | Spare | 25 |
| F3 | Spare | 10 |
| F4 | Spare | 5 |
| F5 | Windshield wipers | 30 |
| F6 | Fuel pump module (Mercedes-Benz Sprinter W906 fuel pump fuse) | 15 |
| F7 | Steering column module / switch cluster | 5 |
| F8 | Engine management system (ECU) | 20 |
| F9 | Engine management system (ECU) | 20 / 25 |
| F10 | Engine management system (ECU) | 10 |
| F11 | Ignition circuit (Terminal 15) | 15 |
| F12 | SRS / Airbag control unit | 10 |
| F13 | Cigarette lighter fuse | 15 |
| F14 | Spare | 5 |
| F15 | Spare | 5 |
| F16 | Engine management system (ECU) | 10 |
| F17 | SRS / Airbag control unit | 10 |
| F18 | Spare | 7.5 |
| F19 | Interior lighting | 7.5 |
| F20 | Signal Acquisition and Actuation Module (SAM) | 25 |
| F21 | Engine control unit (ECU) | 5 |
| F22 | ABS / ESP control module | 5 |
| F23 | Starter motor | 20 / 25 |
| F24 | Engine management system (ECU) | 10 |
| F25 | Auxiliary power socket / Accessory outlet | 25 |
| F26 | Driver side door control module | 25 |
| F27 | Data Link Connector (OBD-II / DLC) | 10 |
| F28 | ABS / ESP hydraulic unit / module | 25 |
| F29 | 40 | |
| F30 | Engine management system (ECU) | 7.5 / 10 |
| F31 | Engine management system (ECU) | 7.5 / 10 |
| F32 | Headlamp washer system | 30 |
| F33 | Spare | 15 |
| F34 | Turn signal / Hazard lights control module | 10 |
| F35 | Audio system / Head unit | 15 / 20 |
| F36 | Spare | 7.5 |
| F37 | Spare | 30 |
| F38 | Auxiliary heater remote control receiver | 7.5 |
| F39 | Heated seats | 30 |
| F40 | Special purpose vehicle equipment (bodybuilder module) | 10 |
| F41 | Spare | 10 |
| F42 | Spare | 10 |
| F43 | Spare | 7.5 |
| Relay No. | Circuit / Function | |
| 1 | Horn relay | |
| 2 | Windshield wiper speed relay | |
| 3 | Fuel pump module relay (Sprinter fuel pump relay) | |
| 4 | Windshield wiper ON/OFF relay | |
| 5 | Starter relay | |
| 6 | Unassigned / Spare | |
| 7 | Engine management system relay (ECU main relay) | |
| 8 | Unassigned / Spare | |
Fuse Box #2 (Under Driver's Seat)
The second fuse panel is located behind a protective cover under the driver's seat.
Access panel location.
| Diagram | ||
|---|---|---|
|
||
| Fuse No. | Rating (A) | Circuit Protected / Function |
| 1 | 5 | Power mirrors, rear window defroster relay |
| 2 | 30 | Rear window wiper |
| 3 | 5 | Auxiliary heater timer, backup camera, neutral switch (Hill Start Assist, 4WD, and engine run-on function), aftermarket electrical connector (roof DIN socket), FleetBoard system, GPS tracking / anti-theft system, emergency exit illumination / escape hammer light |
| 4 | 7.5 | Tachograph, working speed governor (ADR), power take-off (PTO), trailer hitch module (AAG) |
| 5 | 10 | Transmission control module (EGS), Terminal 87 |
| 5 | ECO Start/Stop system, hood switch | |
| 6 | 5 | All-Wheel Drive (AWD / 4WD) |
| 10 | All-Wheel Drive system, Electronic Level Control (ENR air suspension), auxiliary transmission oil pump | |
| 7 | 7.5 | Electronic Selector Lever Module (EWM) |
| 10 | ||
| 15 | ||
| 8 | 10 | Three-way tipper / tail lift system, Terminal 15, PARKTRONIC |
| 9 | 15 | Emergency light/siren control unit (SGU) / roof ventilator |
| 7.5 | A/C compressor clutch, backup warning alarm (deactivatable) | |
| 10 | 25 | Bodybuilder electrical equipment, Terminal 30 |
| 11 | 15 | Bodybuilder electrical equipment, Terminal 15 |
| 12 | 10 | Bodybuilder electrical equipment, Terminal D+ |
| 13 | 10 | Auxiliary turn signal module (up to 03/2007) |
| 30 | Rear passenger compartment air conditioning | |
| 20 | Fuel pump control module (FSCM) | |
| 15 | Fuel pump relay without FSCM (vehicles with option code MI6 / XM0) | |
| 14 | 20 | Trailer electrical socket |
| 15 | 25 | Trailer hitch control module (AAG) |
| 16 | 7.5 | Tire Pressure Monitoring System (TPMS / RDK), PARKTRONIC |
| 17 | 25 | Parameterizable Special Module (PSM) control unit |
| 18 | 25 | Parameterizable Special Module (PSM) control unit |
| 19 | 5 | Overhead Control Panel (DBE) |
| 10 | ||
| 25 | Power sunroof, Overhead Control Panel (DBE) | |
| 10 | ERA-GLONASS emergency call system | |
| 20 | 7.5 | Parking lights, license plate lamps, clearance lamps |
| 21 | 30 | Heated rear window (without ATA / EDW anti-theft alarm) |
| 15 | Heated rear window (with ATA / EDW anti-theft alarm) | |
| 22 | 15 | Heated rear window |
| 20 | 12V auxiliary power socket | |
| 23 | 10 | Third-party bodybuilder electrical equipment |
| 15 | Rear passenger compartment power socket (left side) | |
| 24 | 15 | Power socket at driver's seat base |
| 25 | 15 | Rear passenger compartment power socket (right side) |
| 26 | 25 | Auxiliary coolant heater |
| 27 | 25 | Auxiliary heater |
| 20 | Auxiliary warm-air heater | |
| 28 | 30 | Rear passenger compartment air conditioning (up to 03/2007) |
| 7.5 | CNG fuel system, Terminal 87 | |
| 25 | Starter relay (SRB in fuse/relay box, vehicles without auxiliary battery) | |
| Starter relay (vehicles with auxiliary battery electrical support) | ||
| 29 | 10 | All-Wheel Drive (AWD / 4WD) |
| 30 | ||
| 7.5 | Terminal 87, natural gas fuel system (NGT engines) | |
| 30 | 30 | Air suspension compressor, hydraulic brake booster pump (North America) |
| 10 | All-Wheel Drive system compressor | |
| 15 | Auxiliary heat exchanger blower | |
| 31 | 15 | Left sliding door, rear compartment blower fan |
| 30 | ||
| 15 | Left sliding door power closing assist (soft-close) | |
| 32 | 10 | Keyless entry system |
| 5 | Selective Catalytic Reduction (SCR / AdBlue®) control relay | |
| 33 | 30 | Right sliding door, Electronic Level Control (ENR air suspension) |
| 15 | Right sliding door power closing assist (soft-close) | |
| 34 | 30 | Left sliding door (up to 03/2007) |
| 20 | SCR system heater 1 (AdBlue® reductant heater, diesel exhaust aftertreatment) | |
| 35 | 30 | Brake booster / hydraulic pump |
| 5 | SCR system heater 2 (AdBlue® reductant heater, diesel exhaust aftertreatment) | |
| 36 | 15 | SCR system heater 3 & control module (AdBlue® reductant heater) |
| 37 | 5 | COLLISION PREVENTION ASSIST / Forward Collision Warning (FCW) |
| Blind Spot Assist / Blind Spot Monitoring (BSM) | ||
| 38 | 10 | Multi-function camera (MFK) for Adaptive Highbeam Assist & Lane Keeping Assist |
| 39 | 7.5 | Bodybuilder electrical panel, heavy-duty rear A/C system |
| 15 | Roof ventilator fan, alarm siren | |
| 40 | 15 | Auxiliary battery charging circuit |
| 41 | 7.5 | Signal Acquisition and Actuation Module (SAM) battery voltage sensing |
| 42 | 30 | Rear compartment air conditioning |
| 43 | 10 | Power step / right sliding door |
| 44 | 10 | Power step / left sliding door |
| 45 | 5 | Power step control module and warning buzzer |
| Relay No. | Circuit / Function | |
| R1 | Terminal D+ relay (bodybuilders) | |
| R2 | Terminal 15 relay (bodybuilders) | |
| R3 | Lighting relay | |
| Tail lift / load board relay | ||
| R4 | Headlamp washer relay | |
| R5 | Flashing beacon light relay | |
| R6 | Anti-theft alarm (ATA / EDW) horn relay | |
| R7 | Unassigned / Empty | |
| R8 | Special signal system module (SSU) relay | |
| R9 | Coolant circulation pump relay | |
| R10 | Unassigned / Empty | |
Power Fusible Links (High-Current Fuses)
This high-current fuse panel is located in the driver's footwell.
| Diagram | ||
|---|---|---|
|
||
| Fuse No. | Circuit Protected / Function | Rating (A) |
| F1 | Glow plug control module (Diesel) | 80 |
| F2 | Air conditioning blower / system | 40 / 60 |
| F3 | Signal Acquisition and Actuation Module (SAM) | 80 |
| F4 | Auxiliary battery | 150 |
| F5 | Main power distribution | 150 |
| F6 | Unassigned / Spare | - |
| F7 | Auxiliary heater | 150 |
Overview of Electronic Component Locations
General layout of electronic components in the Mercedes-Benz Sprinter (W906).
1. ABS / ESP control module;
2. A/C condenser fan relay;
3. A/C control module (integrated into climate control panel);
4. Blower motor control module (adjacent to blower motor);
5. Antenna amplifier;
6. Air suspension control module (seat pedestal area);
7. Anti-theft alarm siren (engine compartment, left side);
8. Auxiliary battery (engine compartment, left side);
9. Auxiliary battery cut-off relay;
10. Auxiliary heater control module (type 1);
11. Auxiliary heater control module (type 2);
12. Auxiliary heater control module (type 3 - integrated into heater unit);
13. Main battery;
14. Data Link Connector (OBD-II / DLC);
15. Driver side door control module;
16. Left rear door control module;
17. Right rear door control module;
18. Diesel Engine Control Module (ECM) – OM651 engine;
19. Diesel Engine Control Module (ECM) – except OM651 engine;
20. Gasoline Engine Control Module (ECM) – mounted on engine;
21. Main fuse and relay box (dashboard / passenger compartment);
22. High-current fuse block (driver's footwell);
23. Auxiliary fuse and relay box (under driver's seat);
24. Glow plug control module – OM646 engine;
25. Glow plug control module – except OM646 engine;
26. Left xenon headlamp control module;
27. Right xenon headlamp control module;
28. Headlamp leveling control module (A-pillar);
29. Heated rear window relay 1;
30. Heated rear window relay 2 (vehicles with anti-theft system);
31. Heated windshield relay.