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U135900 — Instrument panel ambient lighting lamp 1, implausible message

Instrument panel ambient lighting lamp 1, implausible message. 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 U135900

Porsche Taycan

Porsche 911 (992)

Porsche Panamera (971, 2017–2023)

Porsche Panamera (972, 2024–)

Porsche Cayenne (9YA)

How to read and clear U135900

  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 U135900 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 →

Download STEUER14 — free fault reading

Other codes of the Central Electrics

U135300Center console contour illumination lamp 1, implausible message
U135400Center console contour illumination lamp 2, no communication
U135500Center console contour illumination lamp 2, implausible message
U135600Center console contour illumination lamp 3, no communication
U135700Center console contour illumination lamp 3, implausible message
U135800Instrument panel ambient lighting lamp 1, no communication
U135A00Instrument panel ambient lighting lamp 2, no communication
U135B00Instrument panel ambient lighting lamp 2, implausible message
U135C00Instrument panel ambient lighting lamp 3, no communication
U135D00Instrument panel ambient lighting lamp 3, implausible message
U135E00Instrument panel ambient lighting lamp 4, no communication
U135F00Instrument panel ambient lighting lamp 4, implausible message

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.