# 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.

- Type: Service bulletin
- NHTSA id: 10234489
- Published by NHTSA: 2023\-04\-17
- Manufacturer's number: 0804623
- Manufacturer's date: 2023\-02\-10
- NHTSA component: PARKING BRAKE; VEHICLE SPEED CONTROL; BACK OVER PREVENTION; ELECTRICAL SYSTEM; SEATS; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY

## 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10234489-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10234489-9999.pdf)

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

## Components

Brakes, Driver assistance, Electrical system, Fuel system, Seats, Throttle and cruise control, Backup camera, Fuel tank, Parking brake

## Trouble codes named

U0485

## Vehicles listed

- 2023 JEEP GRAND CHEROKEE
- 2023 JEEP GRAND WAGONEER

## Recalls for the same vehicles and component

- [24V436000](/recalls/nhtsa/24V436000.md), 2024-06-13: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
- [24V291000](/recalls/nhtsa/24V291000.md), 2024-04-25: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
- [24V289000](/recalls/nhtsa/24V289000.md), 2024-04-25: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
- [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 \(DTCs\)
- [0800124A](/bulletins/10251858.md), 2024-03-18, Service bulletin: ELECTRICAL SYSTEM; BACK OVER PREVENTION. Flash: Drivetrain Control Module \(DTCM\) Updates A moaning, grinding, or groaning type noise while driving between 80 \- 112 kph \(50 \- 70 mph\). Noise is not heard when the front axle disconnect is disengaged. NOTE: This noise happens more as the ambient temperatures become less than 5 ? \(41 ?\). This bulletin involves reprogramming the DTCM with the latest available software.
- [1800424](/bulletins/10251853.md), 2024-03-18, Service bulletin: BACK OVER PREVENTION; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; SERVICE BRAKES; EXTERIOR LIGHTING. Flash: Powertrain Control Module \(PCM\) Updates 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: ? \*\*P00C6\-00 \- Fuel Rail Pressure Too Low \- Engine Cranking. ? P06DD\-00 \- Engine Oil Pressure Control Circuit Performance/Stuck Off. ? P0461\-00 \- Fuel Level Sensor "A" Circuit Range/Performance. ? P051B\-00 \- Crankcase Pressure Sensor Circuit Range/Performance. ? P2F64\-00 \- Ion Sense Feedback Circuit A. ? P0331\-00 \- Knock Sensor 2 Circuit Range/Performance. ? P0300\-00 \- Multiple Cylinder Misfire.\*\* ? P2C90\-00 \- Crankcase Ventilation System \- Hose "A" Disconnected. ? P0011\-00 \- Bank 1 Camshaft 1 Position Timing Over Advanced Or System Performance. ? P0604\-00 \- Internal Control Module Random Access Memory Ram Error. ? P060C\-00 \- Internal Control Module Main Processor Performance. This bulletin involves reprogramming the PCM with the latest available software.
- [0300124](/bulletins/10251830.md), 2024-03-18, Service bulletin: BACK OVER PREVENTION; POWER TRAIN. Rattle Noise While Driving Customers may comment on the following: ? A rattling noise when driving. NOTE: This could be due to the rear driveshaft center support bearing not properly secured to the body. This bulletin involves inspecting and possibly tightening or replacing, the rear driveshaft center support bearing fasteners.
- [S2308000141](/bulletins/10248873.md), 2024-01-16, Service bulletin: PARKING BRAKE. Park Brake Warning Lamp Illuminated and Flashing, Cluster Warning Message to ?Service Park Brake?
- [9100250](/bulletins/10248844.md), 2024-01-16, Service bulletin: BACK OVER PREVENTION; VISIBILITY. Camera \- Rr view digital If a vehicle comes in with a Digital Rear View Mirror not working, please contact FCA REDACTED CONTENT If no response in 15 minutes, proceed with the repair. \~ Please take digital pictures of the what the failure looks like and the fix. Then email all pictures to FCA REDACTED CONTENT
- [S2208000172](/bulletins/10248578.md), 2024-01-08, Service bulletin: BACK OVER PREVENTION. Camera Display Has a Blue Screen When Using Surround, Front, Rear, or Park Assist Camera View
- [S2308000054](/bulletins/10248559.md), 2024-01-08, Service bulletin: BACK OVER PREVENTION. 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

JSON: [/v1/bulletins/10234489](/v1/bulletins/10234489)

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