Jeep Grand Wagoneer 2026 — technical service bulletin
Bulletin 08-069-26 REV. B · NHTSA communication 11037461 · issued Sep 18, 2026
Technical service bulletin
communication type
Electrical System
component
2026
model years
1
vehicle entries
Official summary
Flash: Power Liftgate Module (PLGM) Updates Customers may experience one or more of the following symptoms: SYMPTOM: ● **Continuous chime is heard in the trunk area and does not stop with closing the liftgate, ignition shut off or CAN bus going to sleep. ● Vehicle may not start because the battery has become depleted due to: ○ Noise on the CAN bus. ○ Liftgate left open for more than few hours. ○ Continuous chime. ● Power Liftgate is not responding when first attempting to open after vehicle has sat for an extended period of time. ● Customer is unable to open the liftgate.** ● Power Liftgate do
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.