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B135254 — Lumbar support fore/aft adjustment motor, No basic setting

Lumbar support fore/aft adjustment motor, No basic setting. The Taycan, 911 (992), Panamera (971), Panamera (972) and Cayenne report this code; below is which control unit sets it on each model and how to read and clear it.

Which models and control units set B135254

Porsche Taycan

Seat Module, DriverSeat Module, Passenger

Porsche 911 (992)

Seat Module, DriverSeat Module, Passenger

Porsche Panamera (971, 2017–2023)

Seat Module, DriverSeat Module, PassengerSeat Control Module, Rear Driver SideSeat Control Module, Rear Passenger Side

Porsche Panamera (972, 2024–)

Seat Module, DriverSeat Module, PassengerSeat Control Module, Rear Driver SideSeat Control Module, Rear Passenger Side

Porsche Cayenne (9YA)

Seat Module, DriverSeat Module, Passenger

How to read and clear B135254

  1. Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
  2. Open STEUER14, pick your car and run a fault scan: every control unit is read, and B135254 shows with its status, its full description and the freeze frame when the unit stores one.
  3. Fix the cause first, then clear the fault memory and scan again to check it stays away. Reading and clearing fault codes is free on every control unit.

More about fault memory in the manual →

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Other codes of the Seat Module, Driver

B135113Lumbar support height adjustment motor, Open circuit
B13514BHeight adjustment motor for lumbar support, temperature - above limit value
B135154Lumbar support height adjustment motor, No basic setting
B135202Lumbar support fore/aft adjustment motor, Signal error
B135213Lumbar support fore/aft adjustment motor, Open circuit
B13524BFore-and-aft adjustment motor for lumbar support, temperature - above limit value
B135302Seat angle adjustment motor, Signal error
B135313Seat angle adjustment motor, Open circuit
B13534BSeat angle adjustment motor, temperature - above limit value
B135354Seat angle adjustment motor, No basic setting
B135402Seat height adjustment motor, Signal error
B135407Seat height adjustment motor, mechanical malfunction

All 222 codes of this control unit →

Fault names come from the manufacturer's diagnostic data. STEUER14 is independent and not affiliated with Porsche AG. A code tells you what a control unit detected, not always which part failed — check wiring, supply voltage and related codes before replacing parts. STEUER14 shows each fault's full description, status and freeze frame on the car.