Mercedes-Benz Actros MP4 represents the 4th generation of the Actros model range, which was produced in 2013, 2014, 2015, 2016, 2017, 2018. In this post we will show a description of the fuses and relays of the Mercedes Actros MP4 with a diagram of the block and its location. We note the cigarette lighter fuse.
Fuse and relay block Mercedes-Benz Actros MP4
The main fuse and relay block is located in the passenger compartment, at the bottom of the instrument panel on the passenger side.
Description
- Module relay A32
- Fuses, relays and diodes in the main module (GM)
- Module relay A31.
- Fuses of modules A1 and A2.
Module relay A32
- K1 – Windshield heating system
- K2 – Windshield heating system
- K3 — Additional headlight – terminal 56a
- K4 – Reserve
- K5 – Reserve
- K6 – Reserve
Master Module (GM)
SCA
Fuses Mercedes-Benz Actros MP4
| F2 | 20A Driver’s door control unit |
| F3 | 20A Front passenger door control unit |
| F4 | 20A Driving mode control system |
| – | 20A Tachograph – clamp 30 |
| F5 | 15A Programmable special module |
| – | 15A Distributor clamp 30 |
| F6 | 25A Fan |
| – | 25A Electric independent air conditioning system |
| F7 | 25A Radio/navigation system |
| – | 25A Voltage transformer 12 V |
| – | 25A Distributor clamp 30 |
| F8 | 20A Refrigeration box |
| – | 20A Additional heating system |
| – | 20A Voltage Transformer 12V |
| – | 20A Adaptive Driving Prediction Control Unit – Terminal 30 |
| – | 20A LSVA (heavy goods vehicle towing charges depending on vehicle capacity) |
| F9 | 10A Diagnostic connector |
| F10 | 10A Heating system |
| – | 10A Distance sensor |
| – | 10A Driver Assistance System – Terminal 30 |
| F11 | 10A Toll Collect system |
| – | 10A Ceiling lights for additional compartment in the rear wall |
| – | 10A Reading lamp |
| – | 10A Telephone |
| – | 10A Tire pressure monitoring system |
| – | 10A Fleet Management System – Terminal 30 |
| – | 10A ERA-GLONASS |
| F12 | 15A Sliding top hatch |
| – | 15A EDW system (anti-theft alarm system) |
| – | 15A LSVA (heavy goods vehicle towing charges depending on vehicle capacity) |
| – | 15A Steering wheel angle sensor |
| F13 | 25A Ground clearance adjustment system |
| – | 25A Hydraulic clutch (retarder turbo clutch) |
| – | 25A Retarder |
| F14 | 10A Body manufacturer – clamp 30 |
| F15 | 20A Trailer |
| – | 20A Trailer Voltage Transformer – Clamp 30 |
| F16 | 20A Trailer ABS system – terminal 30 |
| F17 | 5A Ignition switch |
| – | 5A Central Internet Gateway |
| F18 | 5A Modular Switch Panel |
| – | 5A Voltage Transformer with Remote Output |
| – | 5A Instrument cluster – terminal 30 |
| F19 | 6A Cigarette lighter |
| – | 15A Power socket – terminal 15 |
| F20 | 20A Seat heating system |
| – | 20A Distributor clamp 15 |
| F21 | 15A Fuel pre-filter heating system with water separator |
| – | 15A Distributor – D+ terminal |
| F22 | 10A Body manufacturer – D+ terminal |
| – | 10A Fuel pre-filter heating system with water separator |
| F23 | 5A BlueTec® exhaust gas aftertreatment system |
| – | 5A Sunshade |
| – | 5A Towbar (low-mounted towbar system) |
| – | 5A Toll Collect system |
| – | 5A Mounting socket for MEILLER retrofitting |
| – | 5A Hydraulic Auxiliary Drive (HAD) – Clamp 15 |
| – | 5A ERA-GLONASS |
| F24 | 5A Instrument cluster |
| – | 5A Battery Disconnector |
| – | 5A Tachograph |
| – | 5A Brake system |
| – | 5A Airbag |
| – | 5A Telephone |
| – | 5A Transmission control system |
| – | 5A Fleet Management System |
| – | 5A Auxiliary headlight |
| F25 | 10A Trailer ABS system |
| F26 | 10A Driving mode control system |
| – | 10A Customizable special module – terminal 15 |
| F27 | 10A Engine control – terminal 15 |
| – | 10A Reversing camera |
| – | 10A Driver assistance system |
| – | 10A Adaptive Driving Parameter Prediction System Control Unit – Terminal 15 |
| F28 | 10A Retarder |
| – | 10A Hydraulic clutch (retarder turbo clutch) |
| – | 10A Electronic air preparation unit – terminal 15 |
| F29 | 15A Transmission Control System – Terminal 30.1 |
| – | 15A CB radio station |
| F30 | 20A Brake system – clamp 30.2 |
| F31 | 15A Trailer brake light |
| F32 | 25A 24V power sockets |
| – | 25A Additional 24V power socket |
| F33 | 10A Ceiling lights for additional roof compartment |
| – | 10A Voltage Transformer with Remote Output |
| F34 | 25A 24V high-power power socket |
| – | 25A Voltage transformer 12 V |
| – | 15A Electrical equipment of the body of another manufacturer |
| F35 | Reserve |
| F36 | 20A Electronic air preparation unit – terminal 30 |
| F37 | 15A Transmission Control System – Terminal 30.2 |
Relay
- K1 – Gain – terminal 15
- K2 — Gain – D+ terminal
- K3 – Gain – terminal 15
- K4 – Transmission oil cooling
- K5 – Gain – terminal 15
- K6 – Trailer brake light
- K7 – Bistable relay
- K8 – Bistable relay
- K9 – Reserve
SSAM
Fuses Mercedes-Benz Actros MP4
| F1 | 20A Brake system – clamp 30.1 |
| F2 | 10A Diagnostic connector |
| F3 | 15A Additional heating system |
| – | 15A Adaptive Driving Parameter Prediction System Control Unit |
| – | 15A Voltage transformer 12 V |
| F4 | 10A Toll Collect system |
| – | 10A Steering wheel angle sensor |
| – | 10A Telephone |
| – | 10A Fleet Management System |
| – | 10A Tire pressure monitoring system |
| – | 10A Additional compartment lighting lamps in the rear of the vehicle – terminal 30 |
| – | 10A ERA-GLONASS |
| F5 | 15A LSVA (heavy goods vehicle towing charges depending on vehicle capacity) |
| – | 15A Sliding top hatch |
| – | 15A EDW system (anti-theft alarm system) |
| – | 15A CB radio station |
| F6 | 10A Heating system |
| – | 10A Driver assistance system |
| – | 10A Reading lamp – terminal 30 |
| – | 10A Distance sensor |
| F7 | 20A Electronic air preparation unit – terminal 30 |
| F8 | 25A Ground clearance adjustment system |
| – | 25A Retarder |
| F9 | 10A Body manufacturer – clamp 15 |
| – | 10A Toll Collect system |
| – | 10A BlueTec® exhaust gas aftertreatment system |
| – | 10A ERA-GLONASS |
| F10 | 20A Trailer brake light |
| – | 20A Body manufacturer installed brake light |
| F11 | 20A Programmable special module |
| – | 20A Cooler Box – Clamp 30 |
| F12 | 20A Driving mode control system |
| – | 20A Tachograph – clamp 30 |
| F13 | 25A Voltage transformer 12 V |
| – | 25A Radio/navigation system – terminal 30 |
| – | 25A Hydraulic clutch (retarder turbo clutch) |
| F14 | 10A Body manufacturer – clamp 30 |
| F15 | 15A Transmission Control System – Terminal 30.1 |
| F16 | 10A Trailer ABS system |
| F17 | Reserve |
| F18 | 15A Seat heating system |
| F19 | Reserve |
| F20 | 25A 24V high-power power socket |
| – | 15A Electrical equipment of the body of another manufacturer |
| – | 15A CB radio station |
| F21 | 15A Fuel pre-filter heating system with water separator |
| – | 15A Distributor – D+ terminal |
| F22 | 10A Body manufacturer – D+ terminal |
| 10A Fuel pre-filter heating system with water separator | |
| F23 | Reserve |
| F24 | Reserve |
| F25 | 20A Trailer ABS system |
| F26 | 20A Trailer |
| 20A Trailer Voltage Transformer – Clamp 30 | |
| F27 | 20A Driver’s door control unit |
| F28 | Reserve |
| F29 | 20A Front passenger door control unit |
| F30 | Reserve |
| F31 | Reserve |
| F32 | 10A Ceiling lights for additional roof compartment |
| – | Voltage transformer with remote output |
| F33 | 25A 24V power sockets |
| – | 25A Additional 24V power socket |
| F34 | Reserve |
| F35 | 25A Fan |
| F36 | 5A Auxiliary Hydraulic Drive (HAD) |
| – | 5A Mounting socket for MEILLER retrofitting |
| – | 5A Tachograph |
| – | 5A Instrument cluster |
| – | 5A Brake system |
| – | 5A Auxiliary headlight |
| – | 5A Airbag |
| – | 5A LSVA (heavy goods vehicle charges depending on the vehicle’s capacity) |
| – | 5A Adaptive driving parameter prediction system control unit |
| – | 5A Telephone |
| – | 5A Fleet Management System |
| – | 5A Transmission control system |
| – | 5A Battery Disconnector – Clamp 15 |
| F37 | 20A Brake system – clamp 30.2 |
| F38 | 10A Driver assistance system |
| – | 10A Reversing camera |
| – | 10A Engine control – terminal 15 |
| – | 10A Swap body – clamp 15 |
| F39 | 15A Transmission Control System – Terminal 30.2 |
| F40 | 10A Driving mode control system |
| – | 10A Customizable special module – terminal 15 |
| F41 | 10A Retarder |
| – | 10A Electronic air preparation unit – terminal 15 |
| F42 | 5A Cigarette lighter |
| – | 15A Power socket |
Relay Mercedes-Benz Actros MP4
- K1 – Reserve
- K2 — Gain – D+ terminal
- K3 – Transmission oil cooling
- K4 – Gain – terminal 15
- K5 – Gain – terminal 15
- K6 – Trailer brake light
- K7 – Clamp Gain 15
- K8 – Bistable relay
- K9 – Bistable relay
Module relay A31
Scheme
Decoding Mercedes-Benz Actros MP4
| K1 | Working light |
| – | Swap body |
| K2 | Oil cooling of the transfer case |
| K3 | Fuel pre-filter heating system with water separator |
| K4 | Tail lift |
| – | Disabling the auxiliary hydraulic drive (HAD) |
| K5 | Tail lift |
| – | Disabling the auxiliary hydraulic drive (HAD) |
| K6 | 12V radio receiver – terminal 58 |
| K7 | 12V radio receiver – 15R clamp |
| – | Subwoofer |
| K8 | Additional headlight – clip 58 |
| K9 | Interior lighting with a low roof |
| K10 | Interior lighting with a low roof |
Modules A1 and A2
Scheme
Appointment
| A1 | |
| F1 | 5A Cab tilt pump |
| F2 | 10A Tail lift |
| F3 | 10A Flashing beacon |
| F4 | 10A Working light |
| – | 10A Swap body |
| F5 | 10A Mercedes-Benz triangular star with backlight |
| – | 10A Portable lamp power socket |
| F6 | 15A Electrical equipment of the body of another manufacturer |
| F7 | 25A Windshield heating system |
| F8 | 25A Windshield heating system |
| F9 | 10A Transfer case oil cooling |
| – | 10A Auxiliary Hydraulic Drive (HAD) |
| F10 | 15A Fuel pre-filter heating system with water separator |
| F11 | 20A Electric independent air conditioning system |
| F12 | 15A Auxiliary Hydraulic Drive (HAD) |
| F13 | Reserve |
| F14 | Reserve |
| A2 | |
| F1 | 10A Mounting socket for MEILLER retrofitting |
| F2 | 20A Electrical equipment of the body of another manufacturer 2 and 3 |
| – | 20A Body additional axle switch |
| F3 | 10A Controlled auxiliary bridge |
| F4 | 15A Additional headlight |
| F5 | 10A Air supply control system |
| F6 | 10A Subwoofer |
| F7 | 5A Equipment in accordance with the regulations for the carriage of dangerous goods by road, for England |
| F8 | 5A Interior lighting with low roof |
| F9 | 5A CB radio station |
| F10 | 15A Radio/navigation system |
| F11 | 5A Electric independent air conditioning system |
| – | 5A Antenna Amplifier |
| – | 5A Cornering Assistant |
| F12 | 10A 12V radio receiver |
| F13 | Reserve |
| F14 | Reserve |
Checking fuses Mercedes-Benz Actros MP4
Some fuses don’t look like the ones you’re used to seeing in cars, but their functionality is the same. Conventionally, they can all be divided into fuses and automatic ones.
Checking the fuse
- Remove the fuse from the module using pliers and visually inspect it.
- If the fuse wire is blown, replace the faulty fuse with a spare fuse.
- Turn on the electrical consumers and check their operation. If the fuse blows again, contact a specialized workshop with qualified personnel to check the electrical equipment.
Checking the circuit breaker
When the circuit breaker trips, the pin (4) moves to the off position (2).
- Remove the circuit breaker from the module.
- Push the pin (4) into the on position (1).
- Press the release button (3).
— If the pin (4) moves to the off position (2), the circuit breaker is OK.
— If the pin (4) does not move to the off position (2), the circuit breaker needs to be replaced. - Push the pin (4) into the on position (1) and reinsert the circuit breaker.
- Turn on the electrical consumers and check their operation. If the circuit breaker trips again, contact a specialized workshop with qualified personnel to check the electrical equipment.
Fuses and relays Mercedes-Benz Actros MP4. Fuse diagram Mercedes-Benz Actros MP4.