There are 1 owner-reported electrical system complaints for the 2009 Volvo S40in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
HEADLIGHT WIRING- MADE AN ATTEMPT TO CHANGE LIGHT BULBS FOR HEADLAMPS. COVERING AROUND ELECTRICAL WIRING HARNESS WHICH CONNECT TO HEADLIGHT CRUMBLED IN MY HANDS AND ELECTRICAL WIRING IS EXPOSED. WORRIES THAT THIS MAY BE POTENTIAL FIRE HAZARD TO MY VEHICLE AND MYSELF. MY VEHICLE WAS STATIONARY IN MY DRIVEWAY.
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.
Data synced from NHTSA on Apr 26, 2026