juliakoehler72
Alphard Passenger Seat Failure
Summary of the thread
The 2020 Toyota Alphard hybrid's passenger electric seat stopped working, with an error stored in the memory, despite the fuses being fine. The issue was suspected to be related to the seat harness, seat motor, or a low battery. It was suggested to check the battery, as modern cars are sensitive to voltage drops, which can affect specific components like the seat motor. After replacing the battery, the seat function was restored, resolving the problem.
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4 comment(s)
juliakoehler72 (community.author)
That's interesting! I haven't checked the battery specifically. Would a low battery really stop just one seat from working? Everything else seems fine, lights, starting, etc.
simonmeyer6
Yes, it's possible. Modern cars are very sensitive to voltage drops. The seat motor may require a certain voltage to operate correctly, and if the battery is weak, it might not be providing enough power. Although other components appear to be working it is still possible for the battery to be the source of the issue. I would suggest getting the battery tested, and then consider visiting a workshop.
juliakoehler72 (community.author)
Thanks for the advice! You were right, it turned out to be the battery causing the problem. I got it replaced, and the seat is working perfectly again. Cost me 290€ at the garage, all in. Appreciate the help!
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TOYOTA
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ALPHARD
simonmeyer6
It sounds like there could be an issue with the seat harness or the seat motor itself. Has the battery been checked recently? A heavily discharged or defective battery can sometimes cause electrical gremlins in these systems.