There are 1 stored owner reports matching the electrical system leading-label group for the 2009 Porsche Cayenne in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)DURING NORMAL COMMUTE TO WORK DRIVING, A MESSAGE "CHECK DIM BEAM" APPEARED ON THE DASHBOARD MESSAGE BOARD. UPON ATTEMPTING TO CHANGE A FAULTY DIM BEAM HEADLAMP BULB, I FOUND HEADLAMP HARNESS WIRING AND ALL INTERNAL HEADLAMP ASSEMBLY WIRING IS CRACKED AND CRUMBLING AND CONDUCTORS ARE EXPOSED AND CAUSING SHORTS AND APPARENT LAMP FAILURE. OTHER HEADLAMP LIGHTING (SIDE DIRECTIONAL LAMP) LIGHTING FLASHED ON AND OFF WHEN HARNESS WAS TOUCHED, AND OTHER COMPONENTS OF ELECTRICAL SYSTEM FLASHED AND TURNED OFF AND ON BY THEMSELVES, PARTICULARLY THE RADIO. WHEN THE SUSPECT DIM BEAM LAMP WAS SWAPPED WITH OPPOSITE (PASSENGER SIDE, THE REPLACEMENT LAMP DID NOT WORK BUT THE SUSPECT LAMP FROM DRIVER SIDE WORKED ON THE PASSENGER SIDE LEADING ME TO BELIEVE THE LAMP ASSEMBLY WAS SUSPECT. UPON OPENING THE ACCESS POINTS ON THE DRIVERS SIDE ASSEMBLY, THE WIRING WAS SEEN TO BE CRUMBLING AND UNSAFE. I AM WORRIED THAT A FIRE MAY START AND HAVE DISCONTINUED USE OF THE VEHICLE AT THIS TIME.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.