Table of Contents
The third-generation Mercedes-Benz Vito debuted at the Paris Motor Show in October 2014. It differs from its premium counterpart, the V-Class/Viano, through its utilitarian specification and accessible pricing. Over its production run, the model underwent a facelift. This article provides detailed fuse box diagrams and relay assignments for the Mercedes-Benz Vito and Viano (W447 chassis code; 3rd Generation) covering model years 2014 through 2023.
Here you will find fuse box locations, photos, and circuit diagrams. Fuses assigned to the “Cigarette Lighter” and “Fuel Pump” are highlighted in bold.
Engine Compartment
Located on the right side of the engine bay. Remove the protective cover to gain access.
Overview of the Mercedes-Benz Vito / Viano engine compartment fuse box.
| Diagram | ||
|---|---|---|
|
||
| No. | Circuit / Component | Rating (A) |
| Relays | ||
| J | Horn relay | |
| K | Windshield wiper continuous speed relay | |
| L | Windshield wiper ON/OFF relay | |
| M | Starter motor relay | |
| N | Terminal 87 relay | |
| O | Spare | |
| P | Spare | |
| Q | Spare | |
| R | Terminal 15 relay | |
| S | Spare | |
| T | Spare | |
| Panel S1 | ||
| 1 | ESP® valves | 25 |
| 2 | Horn | 15 |
| 3 | Engine Control Module (ECM) | 5 |
| 4 | Transmission Control Module (TCM) | 25 |
| 5 | Spare | - |
| 6 | Spare | - |
| 7 | Spare | - |
| Panel S2 | ||
| 1 | Spare | - |
| 2 | Terminal 87 (Circuit 4) | 15 |
| 3 | Terminal 87 (Circuit 2) | 15 |
| 4 | Terminal 87 (Circuit 3) | 10 |
| 5 | Terminal 87 (Circuit 1) | 20 |
| 6 | Engine Control Module (ECM) | 5 |
| 7 | Spare | - |
| Panel S3 | ||
| 1 | Headlight range adjustment (left) | 5 |
| 2 | ESP® system | 5 |
| 3 | Headlight range adjustment (right) | 5 |
| 4 | Spare | - |
| 5 | Fuel filter heater | 25 |
| 6 | Spare | - |
| 7 | Spare | - |
| Panel S4 | ||
| 1 | Spare | - |
| 2 | Spare | - |
| 3 | COLLISION PREVENTION ASSIST / DISTRONIC PLUS® | 7.5 |
| 4 | Spare | - |
| 5 | Engine radiator fan / Radiator shutter control | 5 |
| 6 | Transmission Control Module (TCM) | 10 |
| 7 | Auxiliary oil pump (ZOP) | 15 |
| Panels S5–S14 | ||
| S5 | Anti-theft alarm system (EDW) siren / horn | 5 |
| S6 | Auxiliary heater control unit | 20 |
| S7 | HLI LED headlight control module | 20 |
| S8 | ESP® control unit | 5 |
| S9 | Spare | - |
| S10 | Spare | - |
| S11 | Spare | - |
| S12 | ESP® hydraulic pump | 40 |
| S13 | CBC Signal Acquisition and Actuation Module 2 | 40 |
| S14 | LCU LED headlight control module | 30 |
| Individual Fuses | ||
| F239 | Front windshield wipers | 30 |
| F240 | Starter, Terminal 50 | 25 |
| F241 | Spare | - |
Passenger Compartment
Three fuse and distribution boxes protecting the vehicle's electrical circuits are located in the cabin.
Fuse Box No. 1
Located behind the access panel on the A-pillar in the front passenger footwell.
| Diagram | ||
|---|---|---|
|
||
| No. | Circuit / Component | Rating (A) |
| Panel S1 | ||
| 1 | Rear seat heating / ventilation, 1st row left | 10 |
| 2 | Rear seat heating / ventilation, 1st row right | 10 |
| 3 | Rear seat heating / ventilation, 2nd row left | 10 |
| 4 | Rear seat heating / ventilation, 2nd row right | 10 |
| 5 | Spare | - |
| 6 | Rear seat heating / ventilation control module | 5 |
| Panel S2 | ||
| 1 | Parameterizable Special Module (PSM) | 25 |
| 2 | Parameterizable Special Module (PSM) | 25 |
| 3 | Spare | - |
| 4 | Spare | - |
| 5 | Right power sliding door / EASY-PACK tailgate | 30 |
| 6 | Spare | - |
| Panels S3–S6 | ||
| S3 | Marco Polo battery charger / charging port | 25 |
| S4 | Terminal 30 (Bodybuilder) | 25 |
| S5 | Spare | |
| S6 | Auxiliary air heater | 25 |
| Panel S10 | ||
| 1 | Tachograph | 5 |
| 2 | Spare | - |
| 3 | Tachograph | 7.5 |
| 4 | Spare | - |
| 5 | Terminal 61 (Bodybuilder) | 15 |
| Westfalia bodybuilder option | 5 | |
| 6 | Terminal 15 (Bodybuilder) | 15 |
| Westfalia bodybuilder option | 5 | |
| 7 | Auxiliary air heater timer | 5 |
| Relays | ||
| A | Terminal 15 relay | |
| B | Spare | |
| C | Spare | |
Fuse Box No. 2
Located behind the trim panel in the front passenger footwell. To access it, pull back the floor carpet/trim (1), depress the retaining tab (2), and slide the cover (3) in the direction of the arrow.
Overview.
| Diagram | ||
|---|---|---|
|
||
| No. | Circuit / Component | Rating (A) |
| Panel S1 | ||
| 1 | Spare | - |
| 2 | Head unit (Audio / Radio receiver) | 25 |
| Retrofit socket for radio receiver | 15 | |
| 3 | Lane Keeping Assist / Steering wheel haptics | 10 |
| 4 | TEMPMATIC climate control / THERMOTRONIC automatic climate control | 10 |
| 5 | Center console control panel with touchpad | 7.5 |
| 6 | Head unit / Radio receiver (Vito) | 5 |
| Head unit / Radio receiver (V-Class) | 15 | |
| 7 | Cigarette lighter fuse (Mercedes-Benz Vito / Viano) | 15 |
| Panel S2 | ||
| 1 | Driver seat control unit | 7.5 |
| 2 | Engine compartment fuse box (PDC-E) | 30 |
| 3 | Airbag control module (SRS) | 7.5 |
| 4 | DAB / SDARS digital radio / TV tuner (Japan) | 5 |
| 5 | Spare | - |
| 6 | Spare | - |
| 7 | Front passenger seat control unit | 7.5 |
| Panel S3 | ||
| 1 | Steering column module | 5 |
| 2 | Display & head unit cooling fan | 7.5 |
| 3 | Telephone receiver module | 5 |
| 4 | Media Interface | 5 |
| 5 | Electronic Toll Collection system (DSRC, Japan) | 7.5 |
| 6 | Climate control blower fan | 30 |
| 7 | Electronic ignition switch (EIS) / Steering lock | 20 |
| Panel S4 | ||
| 1 | Front left door control module | 30 |
| 2 | Front right door control module | 30 |
| 3 | Rear window wiper, right rear door (Vito) | 20 |
| 4 | Electric Parking Brake (EPB / EFS) | 7.5 |
| 5 | Airbag control module (SRS) | 7.5 |
| 6 | Automatic front passenger airbag deactivation | 5 |
| 7 | Spare | - |
| Panel S5 | ||
| 1 | Spare | - |
| 2 | 12 V auxiliary power outlets (Cargo area) | 15 |
| 3 | Electric Parking Brake (EPB / EFS) | 30 |
| 4 | Left power sliding door | 30 |
| 5 | Trailer module 1 | 15 |
| 6 | Trailer module 2 | 25 |
| 7 | Trailer module 3 | 25 |
| Panels S6–S29 | ||
| S6 | Spare | - |
| S7 | Trailer control module | 7.5 |
| S8 | Auxiliary battery charging port | 10 |
| S9 | Trailer control module | 15 |
| S10 | A-pillar footwell fuse box (PDC-F) | 5 |
| S11 | Heated rear window | 30 |
| S12 | Rear-seat entertainment system | 10 |
| S13 | Front left seat belt tensioner (PRE-SAFE®) | 40 |
| S14 | Front right seat belt tensioner (PRE-SAFE®) | 40 |
| S15 | Selective Catalytic Reduction (SCR) exhaust treatment 3 | 10 |
| S16 | Selective Catalytic Reduction (SCR) exhaust treatment 2 | 20 |
| S17 | Selective Catalytic Reduction (SCR) exhaust treatment 1 | 15 |
| S18 | Selective Catalytic Reduction (SCR) relay | 15 |
| S19 | Spare | - |
| S20 | Spare | - |
| S21 | Front passenger seat control module | 30 |
| S22 | Driver seat control module | 30 |
| S23 | Audio amplifier | 40 |
| S24 | Roof-mounted turn signals | 10 |
| S25 | Fuel system control unit | 20 |
| S26 | Panoramic sliding sunroof | 30 |
| S27 | CBC Signal Acquisition and Actuation Module 1 | 40 |
| S28 | CBC Signal Acquisition and Actuation Module 3 | 40 |
| S29 | Rear climate control blower fan | 30 |
| Individual Fuses on Relay Holder | ||
| F21 | PTC auxiliary heater | 200 |
| F22 | Auxiliary battery | 200 |
| F82 | Central Gateway (CGW) “Star 2” | 5 |
| F83 | Electronic ignition lock | 7.5 |
| F84 | Center console switch panel / Left-side instrument panel switch module | 7.5 |
| F85 | Radio remote control receiver / KOM module | 5 |
| F86 | RF antenna | 5 |
| F87 | Diagnostic port (OBD-II) | 10 |
| F88 | Instrument cluster | 10 |
| F89 | Light switch module | 5 |
| F90 | Lane Change Assist / Turn signal module | 5 |
| F90 | SCR exhaust treatment control unit | 5 |
| F92 | Fuel system control unit | 5 |
| F93 | Retrofit socket for radio receiver | 7.5 |
| Electronic Toll Collection system (DSRC, Japan) | ||
| F94 | Spare | |
| F95 | Glove box lighting | 5 |
| F96 | Rear wing door wiper / Left rear door wiper (Vito) | 15 |
| F97 | PARKTRONIC® / Active Parking Assist | 5 |
| F98 | CBC Signal Acquisition and Actuation Module control line | 5 |
| F99 | Tire Pressure Monitoring System (TPMS) | 5 |
| F100 | Audio amplifier | 5 |
| F101 | Overhead control panel | 10 |
| F102 | Spare | - |
| F103 | Taxi equipment / taximeter retrofit connector | 5 |
| F104 | Rear-seat entertainment display, left | 5 |
| F105 | Rear-seat entertainment display, right | 5 |
| F106 | Driver assistance camera | 5 |
| F107 | TV / dashcam retrofit connector | 5 |
| F108 | Reversing camera / 360° camera | 7.5 |
| F109 | Spare | - |
| F110 | CBC Signal Acquisition and Actuation Module 5 | 30 |
| Relays | ||
| A | Terminal 15 relay | |
| B | Rear window wiper relay | |
| C | Terminal 15R2 relay | |
| D | Heated rear window relay | |
| E | Terminal 15R1 relay | |
| F | Terminal 30G relay | |
| G | SCR AdBlue / DEF supply pump relay | |
High-Current Fusible Links
Located on the side of the passenger seat frame behind a protective cover.
Overview.
| Diagram | ||
|---|---|---|
|
||
| No. | Circuit / Component | Rating (A) |
| 1 | A16 – Spare | - |
| 2 | A15 – Spare | - |
| 3 | A1 – Starter motor | - |
| 4 | A8 – A-pillar footwell fuse box (PDC-F) | 150 |
| 5 | A15 – Auxiliary battery | 150 |
| 6 | A2 – Glow plug control module | 100 |
| 7 | E2 – Alternator | 350 |
| 8 | A10 – Engine radiator fan | 100 |
| 9 | Spare | - |
| 10 | A7 – Engine compartment fuse box (PDC-E) | 150 |
| 11 | Spare | - |
| 12 | Spare | - |
| 13 | A6 – Passenger footwell fuse box (PDC-P) | 250 |
| 14 | A13 – CBC Signal Acquisition and Actuation Module | 40 |
| 15 | Spare | - |
| 16 | A11 – Electric power steering (EPS) | 100 |
| 17 | A4 – Rear auxiliary power socket | 50 |
Luggage Compartment Fuse Box
Located on the right side of the luggage compartment behind an access panel.
| Diagram | ||
|---|---|---|
|
||
| No. | Circuit / Component | Rating (A) |
| 1 | 12 V auxiliary socket, 1st seat row (left) | 15 |
| 2 | 12 V auxiliary socket, 2nd seat row (left) | 15 |
| 3 | 12 V auxiliary socket, 2nd seat row (right) | 15 |
| 4 | Relay K127 – Rear 12 V auxiliary power outlet | |