Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Vehicle Electrical System Control Module -J519
The vehicle electrical system control module and the relay carrier on the vehicle electrical system control module on the left side of the instrument panel are one component and cannot be separated.
Additional information:
Refer to the Owner's Manual.
General Description
Vehicle Electrical System Control Module -J519- 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
- Ambient lighting
- 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 the footwell light on and off
- Switch highway signaling on and off
- Set load management
- Set headlamp cleaning system "on time". Refer to HEADLAMP WASHER SYSTEM, ADAPTING .
It depends on the vehicle equipment whether the adaptations listed above can be performed.
"Expressway blinking", "comfort blinking", or "tap blinking" 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 -J519- 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 -J519-, CODING .
DTC Recognition and Display
Vehicle Electrical System Control Module -J519- is equipped with On Board Diagnostics (OBD) which assists troubleshooting.
For troubleshooting, use the Vehicle Diagnostic Tester in operating mode "Guided Fault Finding".
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.