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2020 Mercedes Benz Truck GLA250 4MATIC (156.946)
23-09-2026, 22:33 PM,
Post: #1
2020 Mercedes Benz Truck GLA250 4MATIC (156.946)
2020 Mercedes Benz Truck GLA250 4MATIC (156.946)
i have that car the transmission show P when i turn on the car for seconds and disappear i check the power pin 5 on transmission and it have power and i check pin 2 should have power from the ignition switch module but there is no power and the wire is fine i have many fault codes attached


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24-09-2026, 07:10 AM,
Post: #2
RE: 2020 Mercedes Benz Truck GLA250 4MATIC (156.946)
It looks like you have two problems:
1.- Low voltage in the TCU, either real or an issue with the module itself
2.- Unstable CAN bus.


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