no dash lights power in battery hazard work full beam work
- Thread starter rakgt19
- Start date
Hi everyone, just wanted to share how I finally sorted a major electrical headache on my 2019 T6.1, hopefully it helps someone else out.
The Symptoms:
Total communication failure. The van wouldn't start and the BCM (Body Control Module) was completely "bricked"—it had power but was basically a zombie, not talking to any other part of the van.
The Cause:
It all came down to a major voltage drop. My battery never even hit 12V, and that low power caused the BCM to lock up and lose its "handshake" with the Engine ECU.
The Fix :
A specialist used an Autel scanner to do what he called a "Digital Defibrillation." He basically forced a hard reset on the BCM microprocessor to wake it up. Once it was "alive" again, he re-synced it with the ECU and cleared all the deep critical faults that my basic code reader couldn't see.
The Symptoms:
Total communication failure. The van wouldn't start and the BCM (Body Control Module) was completely "bricked"—it had power but was basically a zombie, not talking to any other part of the van.
The Cause:
It all came down to a major voltage drop. My battery never even hit 12V, and that low power caused the BCM to lock up and lose its "handshake" with the Engine ECU.
The Fix :
A specialist used an Autel scanner to do what he called a "Digital Defibrillation." He basically forced a hard reset on the BCM microprocessor to wake it up. Once it was "alive" again, he re-synced it with the ECU and cleared all the deep critical faults that my basic code reader couldn't see.
Kl15 issue, Kl15 relay issue , ign issue ...this is giving a Ignition power to BCM
nothing for re-synch...........stop asking GPT for solution
this kind of platform can be swich ON on the bench with just few proper power wires
Digital Defibrillation........ damn ..........seems chat GPT was completly drunk that time
nothing for re-synch...........stop asking GPT for solution
this kind of platform can be swich ON on the bench with just few proper power wires
Digital Defibrillation........ damn ..........seems chat GPT was completly drunk that time
First step is always to check ports and grounds.
