The owner of a 2023 Jeep Grand Wagoneer expected a luxury SUV that combined refinement with reliability. But within the first year of ownership, the vehicle began developing repeated electrical and software issues that required multiple service visits. Early in its history, several advanced driver-assistance systems, including automatic high beams, lane assist, and traffic sign recognition, stopped working altogether. Technicians traced the problem to the vehicle’s central ADAS decision module, which was replaced and recalibrated before the systems were restored.
Soon after, new faults appeared. The rear entertainment screens stopped responding, the odometer began flashing, and the trailer brake system activated unexpectedly even though no trailer was connected. Service technicians discovered a failed video and radio module (VRM) that required replacement, followed by reprogramming and a “proxy alignment” procedure to restore communication between the vehicle’s systems. Around this time, the vehicle also experienced repeated battery failures that required jump-starts. Both batteries were later confirmed defective and replaced under warranty.
Over the following months, the Grand Wagoneer continued to return to the shop for recurring electrical and performance problems. The dash intermittently displayed “Dealer Mode On,” the vehicle entered limp mode due to overheating, and a high-temperature warning light appeared while idling and driving. Technicians diagnosed a stuck thermostat, replaced it, and bled the cooling system to restore proper operation. Even after these repairs, intermittent “Check Trailer” alerts and voltage codes continued to appear, often traced to the vehicle’s low-voltage condition.
Across several visits, the dealership performed multiple software updates and module reprogramming for the powertrain and ADAS systems, along with numerous multi-point inspections and recalls. Despite those interventions, the Grand Wagoneer’s electrical and cooling issues returned repeatedly, causing extended downtime and uncertainty about its long-term reliability.
If your SUV or other vehicle has experienced repeated electrical or safety system failures that aren’t fixed after multiple attempts, you may be protected by California’s Lemon Law. Contact a qualified lemon law attorney to review your repair history and discuss whether you’re eligible for a buyback, replacement, or monetary recovery.
