While driving, multiple warning lights illuminate simultaneously — ABS, brake, and all driver assist/safety systems — and the drive mode drops to Standard Locked. During these events the anti-lock braking, stability control, traction control, and trailer sway control systems appear to go offline. I have photographs of the illumi…
Read full complaint
While driving, multiple warning lights illuminate simultaneously — ABS, brake, and all driver assist/safety systems — and the drive mode drops to Standard Locked. During these events the anti-lock braking, stability control, traction control, and trailer sway control systems appear to go offline. I have photographs of the illuminated warnings. My own OBD-II scan on 7/9/26 recorded U0121 (lost communication with ABS module), U0415 (invalid data from ABS module), U3035 (communication authentication failure), and U1012. The dealer's own scan confirmed multiple stored "lost communication with ABS module" codes in module history. The vehicle has a documented history of water intrusion from the sunroof drains, which the dealer was unable to reproduce or repair; water tracked to the windshield/mirror electronics and into the dash. On 7/13/26 the dealer reprogrammed the ABS module with a software update but performed no physical inspection of the wiring, connectors, or modules for water damage or corrosion. The condition is intermittent and unresolved.
Illustration