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U118500 — Rear ambient light, front left door storage box (AL13) – message implausible

Rear ambient light, front left door storage box (AL13) – message implausible. 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 U118500

Porsche Taycan

Porsche 911 (992)

Porsche Panamera (971, 2017–2023)

Porsche Panamera (972, 2024–)

Porsche Cayenne (9YA)

How to read and clear U118500

  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 U118500 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 Central Electrics

U117F00Bulb 1 for contour lighting of instrument panel, implausible message
U118000Bulb 2 for contour lighting of instrument panel, No communication
U118100Bulb 2 for contour lighting of instrument panel, implausible message
U118200Bulb 3 for contour lighting of instrument panel, No communication
U118300Bulb 3 for contour lighting of instrument panel, implausible message
U118400Rear ambient light, front left door storage box (AL13) – no communication
U118600Rear ambient light, front right door storage box (AL17) – no communication
U118700Rear ambient light, front right door storage box (AL17) – message implausible
U118800Ambient light, rear left door storage box (AL20) – no communication
U118900Ambient light, rear left door storage box (AL20) – message implausible
U118A00Ambient light, rear right door storage box (AL23) – no communication
U118B00Ambient light, rear right door storage box (AL23) – message implausible

All 1472 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.