The 2006 DTS electrical complaints cluster around three main problem areas. HID headlight failures dominate the narratives: lights flicker, dim, or cut out completely while driving, often affecting one or both headlights intermittently. Many owners report needing to toggle the light switch on and off to restore function, and failures recur every few minutes to several times per hour. Owners note this happens at all speeds and temperatures, with one reporting failures in winter even from a cold start in the driveway. Dealers cite ballast or connector issues; repair estimates run $800–$1,400 per ballast, and full headlight assembly replacement costs $2,950–$3,950. Some newer replacement assemblies develop moisture accumulation behind the lens in wet conditions.
Heated and cooled seat modules short circuit, producing burning smells, white smoke, and visible flames in one case. The module lives under the passenger seat, and failed units show burnt wires and melted connectors. Replacement costs exceed $800–$1,200. One owner reports the problem reoccurred weeks after dealer replacement of the module.
Broader electrical system failures appear in several narratives: the battery drains in ten days despite replacement, ignition keys become stuck and cannot be removed, instrument gauges fail intermittently, all warning lights illuminate unexpectedly, door locks cycle on and off, and in one case the engine stalls with complete loss of power steering and brakes. A 2014 recall (NHTSA 14V355000) addressed some electrical defects, but owners report parts remained unavailable for months, delaying repairs.
Failure modes owners describe
HID headlight flicker and cutout
Right and/or left HID headlights flicker, dim, or shut off completely while driving, often intermittently and without warning. Single lights or both can fail. Toggling the light switch on and off temporarily restores function. Problem recurs within minutes to hours.
When: Occurs across mileage range (30,000–140,000 miles); some owners report failures starting in winter at cold start; common at night driving speeds (45–70 mph)
Symptoms owners cite: Headlights flicker on and off; One or both headlights cut out completely; No warning light or dash indication; Lights may come back on by toggling switch; Failure recurs every few minutes to multiple times per hour on a single trip; Occasional moisture accumulation behind lens in wet conditions on replacement assemblies
Repairs/costs cited: Dealers cite ballast failure or connector issues. Ballast replacement: $1,000–$1,400 per ballast or $800–$901 per light assembly labor only. Full HID headlight assembly replacement: $2,950–$3,950. Repair requires bumper cover removal.
Recalls/TSBs owners mention: Owners report dealers initially say problem cannot be duplicated; some dealers eventually recommend ballast or full assembly replacement. One narrative mentions GM stating 2007 model fixed the issue but cannot retrofit 2006. No recall issued for headlight failures in these narratives.
Heated/cooled seat module electrical fire
The heated or cooled seat module under the passenger seat develops shorts in the connector and internal wiring. Produces burning plastic/wire smell, white smoke, and in one case visible flame. Burnt wires and melted connectors visible on failed modules. Problem reoccurred in one case weeks after dealer replacement.
When: Triggered by turning on heated seat function; can occur at any speed or while parked. One owner reports it happened shortly after purchase; another after recent recall service.
Symptoms owners cite: Burning plastic/wire smell when heated seat activated; White smoke visible under or around passenger seat; Visible flame in one case; Module shows burnt wires and melted connectors upon inspection; Problem reoccurs after replacement in at least one case
Repairs/costs cited: Replacement of climate control seat module and connector required. Cost $800–$1,200+ for parts and labor. Dealers identified new modules have revised/larger wiring. One owner reports had to manually pull fuse under rear seat cushion to stop burning.
Recalls/TSBs owners mention: Dealer acknowledged this is a 'common issue' and 'routine/recurring problem' on these vehicles. One dealer advised owner to stop using heated seat function because wiring is undersized. No formal recall mentioned in narratives, though one owner expected class-action lawsuit.
Ignition switch and key stuck in ignition
Key becomes lodged in the ignition and cannot be removed. Battery may be dead at time of discovery, or key sticks in ON position while starting. Multiple occurrences reported by same owner.
When: At mileage 39,000–123,000; one case occurred when battery was dead; another while attempting to start
Symptoms owners cite: Key will not come out of ignition; Key stuck in ON position during starting; Multiple occurrences over time; May occur with dead battery
Repairs/costs cited: Dealers noted ignition switch and ignition module need replacement. One owner attempted jump start and then key released. No repair cost cited in narratives.
Recalls/TSBs owners mention: NHTSA Campaign 14V355000 (Electrical System) addressed key stuck in ignition; however, one owner reported VIN was not included in recall; another reported recall parts were unavailable for extended period.
Broad electrical system faults (gauges, lights, locks, stalling)
Vehicle experiences cascading electrical system failures: instrument panel gauges fail to illuminate, all warning lights come on together, door locks cycle independently, GPS shifts to night screen in daytime, power windows/seats/points intermittently fail, windshield wiper rain sensor stops working. In one case, engine stalled with complete loss of power steering and brakes during acceleration.
When: Across 30,000–118,000 miles; one stalling episode at slow speed during left turn; another during 60 mph highway driving; another at 45 mph
Symptoms owners cite: All warning lights illuminate simultaneously; Instrument gauges fail to operate; Door locks lock/unlock on their own; Headlights go to night mode during daytime; Power accessories (seats, windows, coolers) fail intermittently; Windshield wiper rain sensor ('RainSense') stops mid-function; Engine stalls with loss of power-assisted steering and brakes; GPS display shifts to night screen in daytime
Repairs/costs cited: One owner reported dealer unable to duplicate despite video evidence. Problem persisted even after dealer repair attempt. One narrative suggests similarities to the GM ignition switch recall problem.
Recalls/TSBs owners mention: Dealers unable to duplicate in multiple cases despite documented failures and video evidence. NHTSA Campaign 14V355000 may address some of these, but owner explicitly stated different problem areas.
Battery premature drain
Battery drains completely within approximately 10 days even after replacement. Dealer identified accessories (radio button stuck) as cause of power drain in one case, but problem persisted after battery replacement.
When: At very low mileage (50 miles) and recurring; one case identified stuck radio button as cause
Symptoms owners cite: Battery dies and cannot be removed from ignition due to dead battery; Failure recurs every 10 days; Battery replaced but drain continues
Repairs/costs cited: Battery replaced; independent mechanic found stuck radio button causing drain and repaired it. Narratives do not indicate if drain stopped after radio repair.
Recalls/TSBs owners mention: Dealer replaced battery but did not diagnose or resolve underlying drain cause.
Recall parts unavailability (NHTSA 14V355000)
Multiple owners received recall notice for NHTSA Campaign 14V355000 (Electrical System) but were unable to complete repair because required parts were unavailable from manufacturer. Dealers cited months-long wait times and were unable or unwilling to schedule appointments.
When: Recall notices received 2013–2014; parts unavailable for months afterward
Symptoms owners cite: Recall notice received; Parts not in stock; Dealer unable to provide timeline for parts availability; Dealer unable to schedule repair appointments
Codes mentioned: NHTSA 14V355000
Repairs/costs cited: One owner stated manufacturer indicated parts would be available on or after October 1st but dealer continued to say parts unavailable. One narrative mentions recall involved permanent removal of heated washer fluid module as remedy, which owner disputed as safety concern.
Recalls/TSBs owners mention: NHTSA Campaign 14V355000 issued for electrical system defect; manufacturer indicated parts would be available but supply issues persisted. One owner noted remedy was removal of heated washer fluid safety feature.
Synthesized from 68 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.