Service bulletin 0804623

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10248016
Published by NHTSA	2024-01-02
Manufacturer's number	0804623
Manufacturer's date	2023-02-10
NHTSA component	ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE

NHTSA's summary

Radio Over The Air S26.18 Updating to T25L Software Version Customers may experience one or more of the following: ? Amplifier module sets DTC U0485 - Implausible Data Received Set. ? Radio reset (Rearview camera functions normally). ? Voice Recognition (VR) inoperable. ? Wireless CarPlayT inoperable. ? Audio sources inoperable. ? Display switches to Nav on VR prompt. ? Vehicle Positioning (Lat/Long) inoperable. ? Surround View Camera inoperable (Rearview camera functions normally). ? Unable to exit FamCam. ? Audio Repetition inoperable. ? Electric vehicle pages inoperable. ? Translated text is incorrect. ? Profile avatar changes in Valet Mode. ? Display does not return to idle mode after call. ? Dynamic rear view camera guidelines inoperable. ? FOTA popup won?t dismiss. ? Ambient Lights Setting inoperable. ? Call Status on after all ended Favorites available in valet mode. ? SXMT Favorites inoperable. ? Tutorial App inoperable. ? Audio Repetition stops during incoming calls. ? Unable to connect second device. ? Unable to exit Seat Comfort popup. ? Call does not end on the Instrument Panel Cluster (IPC). ? Seat Comfort graphic incorrect. ? Headphone button for front passenger display inoperable. ? Schedule update inoperable. ? USB media source inoperable on front passenger display. ? SXMT inoperable. ? Wireless Android Auto inoperable. ? Media sources duplicated. ? Audio unmuted at door close. ? Radio freeze (Rearview camera functions normally). ? Radio input lagging. ? Navigation active with no active route. ? Scheduled cabin cooling inoperable. ? Incorrect phone repetition displayed. ? Navigation routing inoperable. ? Unable to exit electric vehicle Pages. ? Comfort softkeys incorrect. ? Comfort graphic overlap. ? Unable to change audio sources. ? Audio sources unavailable after profile switch. ? No incoming call popup on Uconnect phone. ? FamCam image in black and white.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Equipment and accessories, Software

Trouble codes named

U0485

Vehicles listed
JEEP GRAND CHEROKEE	2023
JEEP GRAND WAGONEER	2023
JEEP WAGONEER	2023

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
0802624	2024-03-18. Service bulletin. Radio Over The Air Update from QR39.5 to QR40.11 Software Version Customer may experience one or more of the following: ? Mobile Wi-Fi inoperative upon start up. ? Hotspot gives "No Internet" connection message on phone when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air (FOTA) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from QR39.5 to QR40.11. NOTE: National launch for this FOTA update is expected to begin Feburary 19, 2024.
S2308000054	2024-01-16. Service bulletin. System Operation Obstructed or Blocked, ?Blind Spot Temporarily Unavailable, Sensor Blocked?, ?Automatic Emergency Braking (AEB) Limited Service Required? or ?Limited Functionality Clean Front Windshield? Displayed Momentarily on The Cluster
S2308000139	2024-01-16. Service bulletin. Code Error Message on The Radio, Uconnect Box Error or ?Please Reset Message? Appears on the Radio Display
0805523	2023-10-02. Service bulletin. Radio Over The Air S21B.5, S24.13 and S24.18 Updating to S26.18 Software Version
S238A000036	2023-10-02. Service bulletin. Radio Displaying The Front Passenger Display Screen (FPDM) For a ?Fraction Of A Second?
S238A000027	2023-09-25. Service bulletin. The Hybrid Application May No Longer Appear After Radio Over The Air Update To T25.50 Software
0811023	2023-08-21. Service bulletin. Flash: Integrated Dual Charging Module (IDCM) Enhancements Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? B22A9-64 - ECU Internal Performance-Signal Plausibility Failure. ? B22A9-16 - ECU Internal Performance-Circuit Voltage Below Threshold. ? B22A9-17 - ECU Internal Performance-Circuit Voltage Above Threshold. ? B22A9-19 - ECU Internal Performance-Overcurrent. Customer may also experience the following: ? Vehicle will not charge. This bulletin involves reprogramming the IDCM with the latest software available.
S238A000027	2023-08-21. Service bulletin. The Hybrid Application May No Longer Appear After Radio Over The Air Update To T25.50 Software
0811623	2023-07-31. Service bulletin. Flash: Telematics Box Module (TBM) Updates Remote Monitoring System (RMS) feature is inoperative, or disabled. This bulletin involves updating the TBM with the latest available software.