Jeep Grand Wagoneer 2023 — technical service bulletin
Bulletin 0823923 · NHTSA communication 10248923 · issued Nov 7, 2023
Technical service bulletin
communication type
Power Train
component
2023
model years
2
vehicle entries
Official summary
Transfer Case Shift Motor Wire Harness Connector Not Secured Customers may experience a Malfunction Indicator Lamp illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes have been set: U0418-00 Implausible Data Received From Brake System Control Module 1. C1444-98 T-Case Motor Overuse-Component or System Over Temperature. C00A8-13 4WD/AWD Transfer Case Unit Actuator Position Sensor B-Circuit Open. C00A7-13 4WD/AWD Transfer Case Unit Actuator Position Sensor A-Circuit Open. C149E-64 Transfer Case Motor Position Sensor-Signal P
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.