Cadillac Mysteriously Starts Itself—Faulty Aftermarket Remote Starter to Blame

A viral TikTok video shows a Cadillac unexpectedly illuminating its dashboard and starting its engine—even though the key had been removed and the engine was off—simply by turning on the headlights. Owner Alex Rodrigues confirmed the issue stemmed from a faulty **aftermarket remote-start module**. Internal damage to this module caused it to back-feed power into the vehicle’s original wiring, tricking the car into misinterpreting a start command. The problem disappeared after removing the module and re-pairing the factory key. Experts note that such malfunctions aren't unique to Cadillacs; they’re a classic consequence of low-quality or improperly installed aftermarket electronics interfering with the vehicle’s CAN bus system. Modern cars rely heavily on electronic controls, and non-OEM modifications—if not properly handled—can pose serious safety risks.