Mercedes-Benz Actros Mp4 fuse and relay

Mercedes-Benz Actros MP4 provides the 4th generation of the Actros range, which was produced in 2013, 2014, 2015, 2016, 2017, 2018. In this post, we will show a description of the fuses and relays Mercedes Actros mp4 with a box diagram and its location. Note the cigarette lighter fuse.

Mercedes-Benz Actros mp4

The diagram do not fit or the wrong generation?

[Description of Mercedes Actros mp1]
[Description of Mercedes Actros mp3 and mp2]

Fuse and relay box

The main fuse and relay box is located in the passenger compartment, at the bottom of the instrument panel on the passenger side.

Location

To gain access, open the locks (2) and remove the cover (1).

Photo

The execution of the box and the purpose of the elements in them may differ from those presented and depend on the year of manufacture and the level of electrical equipment. Check the designation with your diagrams on the back of the protective cover.

Type 1

Covery

Type 2

Layout

Location 2

Assignment

  1. Relay module A32
  2. Fuses, relays and diodes in the main module (GM)
  3. Relay module A31.
  4. Fuses for modules A1 and A2.

Relay module A32

  • K1 – Heated windscreen
  • K2 – Heated windscreen
  • K3 – Additional headlight – clamp 56a
  • K4 – Reserved
  • K5 – Reserved
  • K6 – Reserved

Master Module (GM)

SCA

SCA

Circuit breakers

F220A Driver’s door control unit
F320A Front passenger door control unit
F420A Drive control system
20A Tachograph – clamp 30
F515A Programmable special module
15A Distributor – clamp 30
F625A Fan
25A Independent electric air conditioning
F725A Radio/navigation system
25A 12V voltage transformer
25A Distributor – clamp 30
F820A Cool box
20A Additional heating system
20A 12V voltage transformer
20A Adaptive Drive Prediction Control Unit – Clamp 30
20A LSVA (heavy duty charges based on vehicle capacity)
F910A Diagnostic connector
F1010A Heating system
10A Distance sensor
10A Driver assist system – terminal30
F1110A Toll Collect System
10A Lampshades for lighting the additional compartment in the rear wall
10A Reading lamp
10A Telephone
10A Tire pressure monitoring system
10A Fleet management system – clip30
10A ERA‒GLONASS
F1215A Sliding sunroof
15A EDW system (anti-theft alarm system)
15A LSVA (heavy duty charges based on vehicle capacity)
15A Steering angle sensor
F1325A Ride Height Control System
25A Hydraulic clutch (retarder turbo clutch)
25A Retarder
F1410A Body builder – clamp30
F1520A Trailer
20A Trailer voltage transformer – terminal 30
F1620A Trailer ABS – clamp 30
F175A Ignition switch
5A Central Gateway
F185A Modular Switch Panel
5A Voltage transformer with remote output
5A Instrument cluster – terminal 30
F196A Cigarette lighter
15A Power socket – terminal 15
F2020A Seat heating system
20A Distributor – terminal 15
F2115A Fuel pre-filter heating system with water separator
15A Distributor – clamp D+
F2210A Body builder – terminal D+
10A Fuel pre-filter heating system with water separator
F235A BlueTec® exhaust gas aftertreatment
5A Sunblind
5A Drawbar (lower drawbar mounting system)
5A Toll Collect System
5A MEILLER retrofit mounting socket
5A Auxiliary Hydraulic Actuator (HAD) – Clamp 15
5A ERA‒GLONASS
F245A Instrument cluster
5A Battery disconnector
5A Tachograph
5A Brake system
5A Airbag
5A Telephone
5A Transmission control system
5A Fleet management system
5A Additional headlight
F2510A Trailer ABS
F2610A Drive control system
10A Parameterizable special module – terminal 15
F2710A Engine control – terminal 15
10A Reversing camera
10A Driver assistance system
10A Adaptive Drive Prediction Control Unit – Terminal 15
F2810A Retarder
10A Hydraulic clutch (retarder turbo clutch)
10A Electronic air preparation unit – terminal 15
F2915A Transmission control system – terminal 30.1
15A CB service radio
F3020A Brake system – clamp 30.2
F3115A Trailer brake light
F3225A 24V sockets
25A Additional 24V socket
F3310A Lights for additional roof compartment
10A Voltage transformer with remote output
F3425A 24V high power socket
25A 12V voltage transformer
15A Other body electrical equipment
F35Spare
F3620A Electronic air preparation unit – terminal 30
F3715A Transmission control system – terminal 30.2

Relay

  • K1 – Reinforcement – clamp 15
  • K2 – Reinforcement – clamp D+
  • K3 – Reinforcement – clamp 15
  • K4 – Oil cooled gearbox
  • K5 – Reinforcement – clamp 15
  • K6 – Trailer brake light
  • K7 – Bistable relay
  • K8 – Bistable relay
  • K9 – Reserved
SSAM

SSAM

Circuit breakers

F120A Brake system – terminal 30.1
F210A Diagnostic connector
F315A Additional heating system
15A Control unit for the system of adaptive prediction of running parameters
15A 12V voltage transformer
F410A Toll Collect System
10A Steering angle sensor
10A Telephone
10A Fleet management system
10A Tire pressure monitoring system
10A Lights for additional compartment in the rear of the vehicle – clamp 30
10A ERA‒GLONASS
F515A LSVA (heavy duty charges based on vehicle capacity)
15A Sliding sunroof
15A EDW system (anti-theft alarm system)
15A CB service radio
F610A Heating system
10A Driver assistance system
10A Reading lamp – clamp30
10A Distance sensor
F720A Electronic air preparation unit – terminal 30
F825A Ride Height Control System
25A Retarder
F910A Body builder – clamp15
10A Toll Collect System
10A BlueTec® exhaust aftertreatment system
10A ERA‒GLONASS
F1020A Trailer brake light
20A Bodybuilder installed brake light
F1120A Programmable special module
20A Cold box clamp 30
F1220A Drive control system
20A Tachograph – clamp 30
F1325A 12V voltage transformer
25A Radio/navigation system – clip30
25A Hydraulic clutch (retarder turbo clutch)
F1410A Body builder – clamp30
F1515A Transmission control system – terminal 30.1
F1610A Trailer ABS
F17Spare
F1815A Seat heating system
F19Spare
F2025A 24V high power socket
15A Other body electrical equipment
15A CB service radio
F2115A Fuel pre-filter heating system with water separator
15A Distributor – clamp D+
F2210A Body builder – terminal D+
10A Fuel pre-filter heating system with water separator
F23Spare
F24Spare
F2520A Trailer ABS
F2620A Trailer
20A Trailer voltage transformer – terminal 30
F2720A Driver’s door control unit
F28Spare
F2920A Front passenger door control unit
F30Spare
F31Spare
F3210A Lights for additional roof compartment
Voltage transformer with remote output
F3325A 24V sockets
25A Additional 24V socket
F34Spare
F3525A Fan
F365A Auxiliary hydraulic drive (HAD)
5A MEILLER retrofit mounting socket
5A Tachograph
5A Instrument cluster
5A Brake system
5A Additional headlight
5A Airbag
5A LSVA (heavy duty charges based on vehicle capacity)
5A Control unit for the system of adaptive prediction of running parameters
5A Telephone
5A Fleet management system
5A Transmission control system
5A Battery Disconnect – Terminal 15
F3720A Brake system – clamp 30.2
F3810A Driver assistance system
10A Reversing camera
10A Engine control – terminal 15
10A Swap body – clip 15
F3915A Transmission control system – terminal 30.2
F4010A Drive control system
10A Parameterizable special module – terminal 15
F4110A Retarder
10A Electronic air preparation unit – terminal 15
F425A Cigarette lighter
15A Power socket

Relay

  • K1 – Reserved
  • K2 – Reinforcement – clamp D+
  • K3 – Oil cooled gearbox
  • K4 – Reinforcement – clamp 15
  • K5 – Reinforcement – clamp 15
  • K6 – Trailer brake light
  • K7 – Reinforcement – clamp 15
  • K8 – Bistable relay
  • K9 – Bistable relay

Relay module A31

Diagram

Relay A31

Appointment

K1Working headlight
Swap body
K2Oil cooled transfer case
K3Fuel pre-filter heating system with water separator
K4Tail lift
Disable Auxiliary Hydraulic Drive (HAD)
K5Tail lift
Disable Auxiliary Hydraulic Drive (HAD)
K612V radio – terminal 58
K712V radio – clamp 15R
Subwoofer
K8Additional headlight – clamp 58
K9Low roof interior lighting
K10Low roof interior lighting

Modules A1 and A2

Diagram

A1-A2

Decoding

A1
F15A Cab tilt pump
F210A Tail lift
F310A Flashing beacon
F410A Work lamp
10A Swap body
F510A Illuminated three-pointed Mercedes-Benz star
10A Hand lamp socket
F615A Other body electrical equipment
F725A Heated windscreen
F825A Heated windscreen
F910A Oil cooled transfer case
10A Auxiliary hydraulic drive (HAD)
F1015A Fuel pre-filter heating system with water separator
F1120A Independent electric air conditioning
F1215A Auxiliary hydraulic drive (HAD)
F13Spare
F14Spare
A2
F110A MEILLER retrofit mounting socket
F220A Other body electrical equipment 2 and 3
20A Body aux axle switch
F310A Steering tag axle
F415A Additional headlight
F510A Air control system
F610A Subwoofer
F75A Equipment in accordance with the regulations for the transport of dangerous goods by road, for England
F85A Low roof interior lighting
F95A CB service radio
F1015A Radio/navigation system
F115A Electric independent air conditioning system
5A Antenna amplifier
5A Cornering assistant
F1210A 12V radio receiver
F13Spare
F14Spare

Additional Information

Some fuses don’t have the usual look you’re used to seeing in cars, but their functionality is the same. Conventionally, all of them can be divided into fusible and automatic.

Photo 1

Checking the fuse

  1. Remove the fuse from the module using pliers and visually inspect it.
  2. If the fuse wire is blown, replace the defective fuse with a backup fuse.
  3. Turn on the consumers of electricity and check their performance. If the fuse blows repeatedly, have the electrical equipment checked by a qualified specialist workshop.

Checking the automatic fuse

Fuse chek

When the automatic fuse is activated, the pin (4) moves to the off position (2).

  1. Remove the automatic fuse from the module.
  2. Press the pin (4) to the on position (1).
  3. Click on the release (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 automatic fuse needs to be replaced.
  4. Press the pin (4) to the on position (1) and reinsert the automatic fuse.
  5. Turn on the consumers of electricity and check their performance. If the automatic fuse blows again, have the electrical equipment checked by a qualified specialist workshop.

That’s all. There is something to add – write in the comments.

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