IllustrationI am reporting a severe, systemic, and undiagnosed electrical defect that compromises vehicle safety and control. The manufacturer’s authorized repair facilities and corporate Technical Assistance Center (TAC) have explicitly documented that their factory test plans are "inconclusive" and they cannot isolate the root cause of th…
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I am reporting a severe, systemic, and undiagnosed electrical defect that compromises vehicle safety and control. The manufacturer’s authorized repair facilities and corporate Technical Assistance Center (TAC) have explicitly documented that their factory test plans are "inconclusive" and they cannot isolate the root cause of the failures. The primary symptom is the catastrophic failure of the climate control/defrost system, which intermittently stops cooling and blows hot/ambient air. Dealerships have repeatedly replaced the physical AC head unit (E87), replaced high-pressure switches, and performed battery capacity discharges to clear persistent diagnostic trouble codes (DTC B131207 and B10AE22). Because these hardware replacements fail to fix the issue and the system continues to drop out, the defect lies deeper within the vehicle's central electrical architecture or wiring harness. Additionally, the vehicle has exhibited erratic, un-commanded behavior. After parking, turning off the vehicle, and walking away, the vehicle spontaneously started running on its own without any input. The dealership was unable to find stored codes for this event, indicating the vehicle’s diagnostic system is failing to log critical electrical malfunctions.A vehicle that spontaneously starts itself poses an extreme risk of carbon monoxide poisoning in residential garages, as well as a runaway or theft hazard if a deeper electrical short commands the transmission to engage while unattended.The manufacturer has exhausted its standard Technical Service Bulletins (TSB 2078655/3) and multiple corporate TAC cases (#3667725 and #3686882), ultimately releasing the car back to me each time. I am at a loss for what to do because this car is dangerous, they don't know what is wrong with it, and I am being forced to drive it.