NHTSA Complaint #10606734 — 2006 BMW 530XI

I DISCOVERED FAILURES OF MULTIPLE WIRES IN THE TAILGATE/REAR WINDOW WIRING HARNESSES. THROUGH RESEARCH ONLINE I HAVE FOUND THIS IS A COMMON PROBLEM WITH THIS VEHICLE OVER SEVERAL MODEL YEARS - SEARCH FOR BMW E61 TAILGATE WIRING PROBLEMS. THE FAILURES ARE CAUSED BY A POOR DESIGN WHERE THE WIRES ENTERING THE HINGE GUIDES (4) FOR THE GLASS AND TAILGATE ARE REPEATEDLY FLEXED AT A SHARP ANGLE UNTIL THE INSULATION, THEN THE COPPER WIRE BREAKS. SAFETY ISSUES - POSSIBLE ELECTRICAL SHORT CIRCUIT LEADING TO FIRES (HIGHEST LOAD IS FOR REAR DEFROSTER); LIGHTING FAILURES (REAR HIGH BRAKE LIGHT, LICENSE PLATE LAMPS AND OTHERS); REDUCED VISIBILITY DUE TO LOSS OF WIPER/WASHER/DEFROSTER; REAR GLASS LATCH OPENING WHILE UNDERWAY, POSSIBLY RESULTING IN LOSS OF CARGO OR INGRESS OF EXHAUST FUMES. CENTRAL LOCKING MECHANISM FAILS. IF THERE WERE TO BE AN ACCIDENT AND/OR INTERIOR FIRE ESCAPING THE VEHICLE WOULD BE DIFFICULT THIS IS NOT AN EASILY REPAIRED PROBLEM. IT WOULD BE BEYOND THE CAPABILITIES OF ALL BUT A SKILLED MECHANIC WITH PROPER TOOLS. I DISCOVERED IT WHEN THE REMOTE LOCK/UNLOCK USING THE KEY FOBS FAILED. AS I INVESTIGATED I FOUND THE BROKEN WIRE, ALONG WITH SEVERAL OTHERS WITH BROKEN INSULATION, SOME WITH BROKEN COPPER STRANDS. *TR