# Service bulletin 0818523

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: 10242833
- Published by NHTSA: 2023\-09\-25
- Manufacturer's number: 0818523
- Manufacturer's date: 2023\-07\-28
- NHTSA component: ELECTRICAL SYSTEM; BACK OVER PREVENTION

## NHTSA's summary

Radio Over The Air Uconnect R1L Radio Software Update to R160 Customers may experience one or more of the following: ? Media source changes to AM after the theme mode is changed \(ex. headlights on \- dark mode\). ? Audio cuts out at volume levels 30 or above. ? System switches to Wireless after key cycle, profile change, or theme mode change. ? Wireless phone interface freezes after user accepts incoming call when in a conference call. ? Wi\-Fi Hotspot gets disabled automatically when turning the vehicle ignition off for a long period. ? Loss of SXM/AM/FM presets. ? Blank Screen and Home Screen Loading. \(Rearview Camera not affected\). ? Radio Reboot. \(Rearview Camera not affected\). 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 136.10.04, 139.01.53 and 145.00.15 to R160. NOTE: The national launch for the FOTA is expected to begin April 17, 2023.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10242833-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10242833-9999.pdf)

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

## Components

Driver assistance, Electrical system, Backup camera

## Vehicles listed

- 2022 to 2023 RAM 1500
- 2022 RAM 2500
- 2022 RAM 3500
- 2022 RAM 4500
- 2022 RAM 5500

## Recalls for the same vehicles and component

- [24V437000](/recalls/nhtsa/24V437000.md), 2024-06-13: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
- [24V436000](/recalls/nhtsa/24V436000.md), 2024-06-13: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
- [23V654000](/recalls/nhtsa/23V654000.md), 2023-09-28: BACK OVER PREVENTION:DISPLAY FUNCTION
- [23V059000](/recalls/nhtsa/23V059000.md), 2023-02-09: BACK OVER PREVENTION:DISPLAY FUNCTION
- [22V407000](/recalls/nhtsa/22V407000.md), 2022-06-09: BACK OVER PREVENTION:DISPLAY FUNCTION

## Other bulletins for the same vehicles and component

- [103289](/bulletins/11014887.md), 2025-03-04, Service bulletin: BACK OVER PREVENTION: WARNINGS; LANE DEPARTURE: BLIND SPOT DETECTION. CAMERA \- REAR VIEW
- [S2208000045 REV.B](/bulletins/11011774.md), 2024-12-11, Service bulletin: BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING. Backup Camera Poor Image Quality Inspection
- [0900124](/bulletins/10251862.md), 2024-03-18, Service bulletin: BACK OVER PREVENTION. Cold Engine Ticking Noise The customer may describe a ticking noise from the exhaust manifold location\(s\) when cold. This bulletin involves replacing the exhaust manifolds.
- [0819023](/bulletins/10248960.md), 2024-01-16, Service bulletin: BACK OVER PREVENTION; ELECTRICAL SYSTEM; PARKING BRAKE; TRAILER HITCHES. Radio Over the air update to R255.45.06 Customers may experience one or more of the following: No sound heard when Assist \& SOS Call is established. Balance/Fade does not stay on when setup by one press. Wireless Phone interface freezes after User accepts incoming call when in a conference call. System switches to Wireless after key cycle, profile change, theme change, or theme mode change. After overnight sleep cycle defrost vent and dash vent are cut off due to duplicate front defrost. Surround sound image loads incorrectly when activating with Android Auto?. Radio plays different SXM® station than user selected. After a software update, previously added widgets to Shortcuts show up as "Couldn't add widget". SXM® presets grayed out, non\-functional and audio intermittently fades in and out. Switch between the Cargo Camera screen and the AUX camera screen while switching between Night/Day modes, camera image may not be displayed. \(Rearview camera functions normally\). Deleting songs from Artist \& Song Notifications, then Sports announcement displayed and "X" to cancel freezes screen. \(Rearview camera functions normally\). After a long sleep cycle, the left menu bar showing SXM® station categories \(i.e. For You, Music, Sports, News, Presets\) does not display all categories. When playing SXM®, after switching to a profile with a different Theme Mode, starting Bus Sleep cycle causes Presets Shown to change from 20 to 15. \(Rearview camera functions normally\). When call received from another vehicle, the voice of the receiving end is echoed back, the caller's vehicle has no echo issue. No response from Browse hard button when SXM® source is selected. Screen graphics/Theme \- Shortcut widgets show up as "Loading", even after full sleep cycle. Android Auto? \- Call duration displayed on status bar notification area is different than the actual duration. Widget view and Android Auto? screen are showing correct. Back Camera Icon is grayed out and it's not accessible f
- [0820323](/bulletins/10248947.md), 2024-01-16, Service bulletin: AIR BAGS; BACK OVER PREVENTION. Radio Over The Air Update to T25.48 Software Version The customer may experience one or more of the following: ? Ambient Light Setting inoperable. ? Radio reset \(Rearview camera functions normally\). ? Voice Recognition \(VR\) inoperable. ? Audio sources inoperable. ? Wireless CarPlay® inoperable. ? Setting preferences not saved on correct profile. ? Audio loss. 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 S26.17 to T25.48. NOTE: The National campaign for this FOTA update launched July 17, 2023.
- [0824423](/bulletins/10248928.md), 2024-01-16, Service bulletin: BACK OVER PREVENTION; PARKING BRAKE; ELECTRICAL SYSTEM. Radio R255.45.06 USB Software Update The customer may experience one or more of the following: No sound heard when Assist \& SOS Call is established. Balance/Fade does not stay on when setup by one press. Wireless Phone interface freezes after User accepts incoming call when in a conference call. System switches to Wireless after key cycle, profile change, theme change, or theme mode change. After overnight sleep cycle defrost vent and dash vent are cut off due to duplicate front defrost. Surround sound image loads incorrectly when activating with Android Auto?. Radio plays different SXM? station than user selected. After a software update, previously added widgets to Shortcuts show up as "Couldnt add widget". SXM? presets greyed out, non\-functional and audio intermittently fades in and out. Switch between the Cargo Camera screen and the AUX camera screen while switching between Night/Day modes, camera image may not be displayed \(Rearview camera functions normally\). Deleting songs from Artist \& Song Notifications, then Sports announcement displayed and 9X9 to cancel freezes screen \(Rearview camera functions normally\). After a long sleep cycle, the left menu bar showing SXM? station categories \(i.e. For You, Music, Sports, News, Presets\) does not display all categories. When playing SXM?, after switching to a profile with a different Theme Mode, starting Bus Sleep cycle causes Presets Shown to change from 20 to 15 \(Rearview camera functions normally\). When call received from another vehicle, the voice of the receiving end is echoed back, the callers vehicle has no echo issue. No response from Browse hard key when SXM? source is selected. Screen graphics/Theme \- Shortcut widgets show up as "Loading", even after full sleep cycle. Android Auto? \- Call duration displayed on status bar notification area is different than the actual duration. Widget view and Android Auto? screen are showing correct. Back Camera Icon is grayed out and its not accessible from
- [0823723](/bulletins/10248920.md), 2024-01-16, Service bulletin: WHEELS; AIR BAGS; BACK OVER PREVENTION; ENGINE AND ENGINE COOLING; STRUCTURE; ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Transfer Case Shift Motor Wire Harness Connector Not Secured Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: ? U0418\-00 \- Implausible Data Received From Brake System Control Module. ? 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 Plausibility Failure. ? C1423\-64 \- Transfer Case Internal Performance\-Signal Plausibility Failure. ? C1406\-13 \- Transfer Case Brake Control\-Circuit Open. ? C1477\-4B \- Transfer Case Clutch\-Over Temperature. ? C140A\-13 \- Transfer Case Motor Control\-Circuit Open. ? U041E\-00 \- Invalid Data Received From All Wheel Drive Control Module. ? U0422\-00 \- Implausible Data Received From Body Control Module. ? U0418\-00 \- Implausible Data Received From Brake System Control Module 1. ? U041E\-00 \- Invalid Data Received Form All Wheel Drive Control Module. ? U0403\-00 \- Implausible Data Received From T\-Case. The customer may also comment on the following: ? 4WD Service light displayed in the Instrument Panel Cluster \(IPC\). This bulletin involves performing a push?pull?push test on the transfer case shift motor wire harness connector.
- [0821223](/bulletins/10248599.md), 2024-01-08, Service bulletin: BACK OVER PREVENTION; EQUIPMENT:ELECTRICAL. Radio Over The Air Update From S26.17 and T25.48 to T25.51 Software Version Customer may experience one or more of the following: ? Missing Side Camera and Trailer View SoftKeys. ? Ambient Light Setting inoperable. ? Radio reset \(Rearview camera functions normally\). ? Voice Recognition \(VR\) inoperable. ? Audio sources inoperable. ? Wireless CarPlayT inoperable. ? Setting preferences not saved on correct profile. ? Audio loss. 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 S26.17 and T25.48 to T25.51. NOTE: The National campaign for this FOTA update is estimated to be launched on September 29, 2023.
- [0804423](/bulletins/10248019.md), 2024-01-02, Service bulletin: STEERING; TRAILER HITCHES; SERVICE BRAKES; BACK OVER PREVENTION; ELECTRICAL SYSTEM; WHEELS. Radio Over The Air S24.13 and S24.18 Updating to S26.17 Software Version Customers may experience one or more of the following: ? \*\*Blank screen \(Rear view camera is not affected and will still function normally\).\*\* ? Battery drain. ? Radio resets \(Rear view camera will still function normally\). ? Wireless connectivity device disconnect. ? CarPlayT icon does not appear in device manager. ? Climate icon missing. ? Audio disruptions. ? SXMT inoperative. ? Audio muted. ? Passenger screen blank. ? Passenger screen apps missing. ? Missing profiles icon. ? Instrument Panel Cluster \(IPC\) displays incorrect audio source. ? Radio is slow to respond. ? Trailer tire pressure configurations deleted. ? Steering wheel controls skipping SXMT channels. ? Recent calls not displayed. ? Phone audio playing with ignition off. The following improvements are also included with this update: ? Apple CarPlayT and Android AutoT improvements. ? Voice Recognition \(VR\) command improvements. ? Uconnect phone improvements. ? FOTA improvements. ? Passenger screen camera app improvements. ? Icon size/layout improvements. 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 S24.13 or S24.18 to S26.17. NOTE: The national launch for the FOTA is expected to begin November 25, 2022.
- [1801823](/bulletins/10248008.md), 2024-01-02, Service bulletin: BACK OVER PREVENTION; ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates Customer or technician may experience the following: ? \*\*Power Take Off \(PTO\) disable to high engine oil temperature \(DD and DP Cab Chassis only\)\*\*. ? Customer may complain of slow PTO idle ramp up. ? Message will appear ?Hot Oil? and exit high idle or PTO mode, when in high idle or PTO mode and running between 10\-30 minutes \(no load\). ? High frequency exhaust noise at idle after cold start. This bulletin involves reprogramming the PCM with the latest available software.

JSON: [/v1/bulletins/10242833](/v1/bulletins/10242833)

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