Power Distribution Module: Description and Operation

Vehicle Electrical System Control Module

General Information

The Vehicle Electrical System Control Module (J519) and relay carrier on it at the left side of the instrument panel are one component and cannot be separated.

Vehicle Electrical System Control Module has the following tasks in the vehicle:

• Electric load management

• Exterior light control

• Turn signal control

• Wipers, rear window

• Heated rear window

• Interior light control

• Shift/selector gate illumination

• Terminal control

• Dimming, instrument illumination

• Fuel Pump (FP) supply

• Pre-energizing of generator

• Horn

The following functions can be adapted:

• Erase learned values and set standard adaptation values

• Adjust Coming Home Time (equipment dependent)

• Adjust Leaving Home Time (equipment dependent)

• Set rear window heater "on time"

• Switch footwell lights on and off

• Switch highway signaling on and off

• Set load management

• Set headlamp cleaning system "on time". Refer to --> [ Headlamp Washer System, Adapting ] Testing and Inspection.

• It depends on the vehicle equipment whether the adaptations listed above can be performed.

• "Highway signaling","comfort-flashing", or " tap signaling" means that turn signals are activated multiple times (1-5 times) when turn signal lever is tapped once (signal cycles).

• If Vehicle Electrical System Control Module is to be replaced, the work procedure to read out the codes stored in the module must always be performed. Refer to --> [ Vehicle Electrical System Control Module, Coding ] Programming and Relearning.

DTC recognition and display

The Vehicle Electrical System Control Module is equipped with OBD.

Use the "Guided Fault Finding" operating mode on the for fault finding.