B134D07 on Seat: Seat forward/back adjustment button mechanical malfunction
Diagnostic trouble code B134D07 on Seat vehicles — what it means, the common
causes, and how to confirm the real fault before replacing parts.
What does B134D07 mean?
B134D07 indicates: Seat forward/back adjustment button mechanical malfunction.
This relates to the Body system.
Common causes of B134D07
mechanical malfunction of seat forward/back adjustment button
fault in the seat adjustment button circuit for forward/back movement
What to check (live data)
limit switch signals for locking/end position detection
Hall-effect sender signal from seat back motor
pawl motor activation status
Parts often involved in B134D07
seat forward/back adjustment button
pawl motor (F524/F525)
seat back motor with Hall-effect sender (V361/V368)
limit position switches (F526-F533)
seat adjustment control unit (J857)
Don't replace parts until the root cause is confirmed — many of these codes are caused by wiring, a connector or an upstream fault, not the part itself.
Get the confirmed root cause for B134D07 — on YOUR vehicle
A code is a symptom, not a diagnosis. AutoDX Pro cross-checks several
independent assessments, pinpoints the actual root cause, gives you the
exact tests to confirm it, and shows the parts — only after the cause is
confirmed. Reads your scan-tool photo and decodes your VIN with open
recalls.
B134D07 is a diagnostic trouble code: Seat forward/back adjustment button mechanical malfunction.
What are the common causes of B134D07 on a Seat?
Common causes include: mechanical malfunction of seat forward/back adjustment button, fault in the seat adjustment button circuit for forward/back movement. The exact cause depends on the vehicle — confirm it before replacing parts.
Can I keep driving a Seat with B134D07?
It depends on the fault and your symptoms. Some causes are minor, others can damage components or affect safety. Get the root cause confirmed before deciding.
How do I fix B134D07 on a Seat?
Confirm the actual root cause with targeted tests first, then replace only the part that's at fault. AutoDX Pro gives you the root cause, the exact tests, and the parts for B134D07 on your specific Seat.