Symptoms
A blank or unresponsive 10.1- or 12-inch center screen, a rear camera that doesn't show, Wi-Fi or remote functions dead, or warning messages after a short drive.
The fix, step by step
- Check the battery first, because low voltage causes all kinds of module faults.
- Test it, then clean and tighten the terminals.
- Next, look for over-the-air radio updates in Uconnect settings.
- FCA also has a bulletin on how to install them.
- Bulletins for dealer flashes include TSB 08-039-22 for blank center screens, which FCA says must be done before the display is replaced, plus 08-202-22 for the power-steering module and 08-173-21 for the telematics box.
- Several camera faults are recalls rather than TSBs, so run the VIN.
Tools & part numbers
- Battery tester
- terminal brush
- a USB drive if an update calls for one
Where to buy the parts
Battery, 2024 Wagoneer 3.0RockAuto ↗Amazon ↗
Battery, 2022 Wagoneer 5.7RockAuto ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Jeep Wagoneer & Grand Wagoneer (WS) parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.