# Service bulletin 0800824

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.

- Type: Service bulletin
- NHTSA id: 10251827
- Published by NHTSA: 2024\-03\-18
- Manufacturer's number: 0800824
- Manufacturer's date: 2024\-01\-06
- NHTSA component: ELECTRICAL SYSTEM; BACK OVER PREVENTION

## NHTSA's summary

Radio Over The Air Update to U29.42 Software Version Customers may also experience one or more of the following: ? Blank phone widget displayed. ? Radio freeze after reverse event \(Rearview Camera \(RVC\) Functions Normally\). ? Screen Off at start up \(RVC Functions Normally\). ? Radio restart before sleep after switching between different USBs. ? Pop up error "setting not saved" occurring when attempting to enable Geolocation \(Privacy Mode Off\). ? Amplifier module sets Diagnostic Trouble Code \(DTC\) U0485 Implausible Data Received From Radio. ? During FOTA Scheduling, if OK is not pressed to confirm time selected, vehicle will sleep. ? Apps downloaded for one connected profile are being shared with other local profiles. ? Switching profiles with slow response. ? Slow response switching between camera views. ? Black radio screen \(RVC functions normally\). ? Rear seat reminder alert unavailable. ? Wi\-Fi software update pop\-up is being triggered in non\-connected vehicles. ? Switching to Android menu, display screen blinks on green color. ? Microphone inoperative during SOS call from the vehicle. 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 T27.39 or U29.28 to U29.42. NOTE: The national launch for the FOTA is expected to begin January 22, 2024

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10251827-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10251827-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Driver assistance, Electrical system, Backup camera

## Trouble codes named

U0485

## Vehicles listed

- 2024 JEEP GRAND WAGONEER
- 2024 JEEP WAGONEER

## Recalls for the same vehicles and component

- [24V944000](/recalls/nhtsa/24V944000.md), 2024-12-19: BACK OVER PREVENTION:SOFTWARE
- [23V577000](/recalls/nhtsa/23V577000.md), 2023-08-14: BACK OVER PREVENTION:DISPLAY FUNCTION

## Other bulletins for the same vehicles and component

- [S2508000029 REV.B](/bulletins/11036279.md), 2026-08-19, Service bulletin: BACK OVER PREVENTION: WARNINGS. Instrument Panel Cluster \(IPC\) Message “Park Assist System Unavailable” or “Service Park Assist System”, “Rear Braking Assist Unavailable” or “Service Rear Braking Assist System" with Performance Diagnostic Trouble Codes \(DTCs\)
- [S2508000029 REV.A](/bulletins/11036180.md), 2026-08-13, Service bulletin: BACK OVER PREVENTION: WARNINGS. Instrument Panel Cluster \(IPC\) Message “Park Assist System Unavailable” or “Service Park Assist System”, “Rear Braking Assist Unavailable” or “Service Rear Braking Assist System" with Performance Diagnostic Trouble Codes \(DTCs\)
- [S2508000029](/bulletins/11017123.md), 2025-04-22, Service bulletin: BACK OVER PREVENTION: WARNINGS; SERVICE BRAKES. Instrument Panel Cluster \(IPC\) Message “Park Assist System Unavailable” or “Service Park Assist System”, “Rear Braking Assist Unavailable” or “Service Rear Braking Assist System" with Performance Diagnostic Trouble Codes \(DTCs\)
- [0800824A](/bulletins/10251861.md), 2024-03-18, Service bulletin: ELECTRICAL SYSTEM; BACK OVER PREVENTION. Radio Over The Air Update to U29.42 Software Version Customers may experience one or more of the following: ? Blank phone widget displayed. ? Radio freeze after reverse event \(Rearview Camera \(RVC\) Functions Normally\). ? Screen Off at start up \(RVC Functions Normally\). ? Radio restart before sleep after switching between different USBs. ? Pop up error "setting not saved" occurring when attempting to enable Geolocation \(Privacy Mode Off\). ? Amplifier module sets Diagnostic Trouble Code \(DTC\) U0485 Implausible Data Received From Radio. ? During FOTA Scheduling, if OK is not pressed to confirm time selected, vehicle will sleep. ? Apps downloaded for one connected profile are being shared with other local profiles. ? Switching profiles with slow response. ? Slow response switching between camera views. ? Black radio screen \(RVC functions normally\). ? Rear seat reminder alert unavailable. ? Wi\-Fi software update pop\-up is being triggered in non\-connected vehicles. ? Switching to Android menu, display screen blinks on green color. ? Microphone inoperative during SOS call from the vehicle. 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 T27.39 or U29.28 to U29.42. NOTE: The national launch for the FOTA is expected to begin \*\*February 16, 2024.\*\*
- [S2309000010](/bulletins/10247437.md), 2023-12-18, Service bulletin: BACK OVER PREVENTION; VEHICLE SPEED CONTROL. Customer complaint may include a noise from under the hood described as a ?belt\-related? noise.

JSON: [/v1/bulletins/10251827](/v1/bulletins/10251827)

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