erwin_silber1
Seat Mii Keyless Entry Problem
Summary of the thread
The keyless entry system on a 2011 Seat Mii stopped working on the driver's side, with diagnostics indicating an error related to the door electronics. Initial checks of fuses and the main wiring harness showed no issues, leading to suspicions of a defective door switch or electric door locking system. The problem was ultimately traced to a faulty connector on the driver's side door module, which was replaced and recoded by a professional, resolving the issue.
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4 comment(s)
erwin_silber1 (community.author)
Good point, I did check the main connector, but I didn't disassemble the door itself. Any chance the door switch or the electric door locking system itself could be the culprit? The keyless entry antenna is also in that area, isn't it?
marvinkrueger1
It definitely could be the door switch or the locking mechanism itself, but given the error code and your description, a wiring issue seems more likely. If the main harness looks okay, it might be inside the door panel. Honestly, chasing electrical gremlins can be a pain. If you're not comfortable with a multimeter and wiring diagrams, it might be worth getting a professional to take a look. Could save you a lot of time and potential headaches.
erwin_silber1 (community.author)
Took it to a local shop, and you were spot on. They found a faulty connector on the driver's side door module. Replaced the connector and recoded the module. Total cost was 95€. Appreciate the help!
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SEAT
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MII
marvinkrueger1
Sounds like a broken wire or a loose connection. Have you checked the wiring harness that goes into the door from the car body? Those are known to flex and break over time. The error code definitely points towards an electrical issue within the locking system circuit.