# Service bulletin 1805620

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: 10229346
- Published by NHTSA: 2023\-01\-09
- Manufacturer's number: 1805620
- Manufacturer's date: 2020\-07\-29
- NHTSA component: POWER TRAIN; PARKING BRAKE; ELECTRICAL SYSTEM; BACK OVER PREVENTION:SOFTWARE

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest available software. Customers may also experience the following condition:When the cruise control is engaged and the Active Vehicle Speed Limiter \(AVSL\) button is pressed, Instrument Panel Cluster \(IPC\) display skips ?Cruise Control Canceled? message and displays ?Speed Limiter Ready?. In addition the following software enhancement are included:Improved idle after a hot restart.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10229346-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10229346-9999.pdf)

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

## Components

Brakes, Driver assistance, Electrical system, Transmission and driveline, Backup camera, Parking brake

## Vehicles listed

- 2020 JEEP CHEROKEE

## Recalls for the same vehicles and component

- [20V191000](/recalls/nhtsa/20V191000.md), 2020-09-10: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

## Other bulletins for the same vehicles and component

- [S2208000045 REV.B](/bulletins/11011774.md), 2024-12-11, Service bulletin: BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING. Backup Camera Poor Image Quality Inspection
- [0804523](/bulletins/10248014.md), 2024-01-02, Service bulletin: BACK OVER PREVENTION:SOFTWARE. Radio Over The Air Updating to 34.42 Software Version ? Mobile Wi\-Fi inoperative upon start up. ? Hotspot gives 9No Internet9 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 34.4 to 34.42.
- [9003357](/bulletins/10247905.md), 2024-01-02, Service bulletin: BACK OVER PREVENTION. ADAPTER, Engine Oil Filter \(Pentastar V6\) For all 2014MY replace the Oil Filter Adapter \(OFA\). For any other MY \(with mileage above 30,000\) review and follow instructions from STAR Online S1809000007 REV. C available on Dealer Connect. Also, consider the following: 1\) Remove OFA 2\) Replace only the oil inlet O\-ring and gaskets \(seals kit in SOL above\). 3\) Re\-install the OFA. For 2023MY and beyond use black O\-ring. For 2022MY and prior use red O\-ring. Note: When replacing OFA, it may be necessary to transfer the Oil Temp/Pressure Sensor from the old OFA to the new OFA.
- [08\-038\-23](/bulletins/10231815.md), 2023-02-13, Service bulletin: BACK OVER PREVENTION:SOFTWARE. Radio Over The Air JR34.3 Updating to JR34.32.Software Version Customers may experience one or more of the following: Not be able to use Mobile Wi\-Fi upon start up. Hotspot gives a 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 JR34.3 to JR34.32. NOTE: National launch for this FOTA update is expected to begin February 20, 2023.
- [08\-022\-23](/bulletins/10231792.md), 2023-02-13, Service bulletin: BACK OVER PREVENTION:SOFTWARE. Radio Over The Air Updating to 40.12 Software Version Mobile Wi\-Fi inoperative upon start up. Hotspot gives 9No Internet9 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 39.5 to 40.12.
- [S2108000170](/bulletins/10230194.md), 2023-01-17, Service bulletin: PARKING BRAKE. Head unit button stuck DTC code B14DA\-2A
- [0809321](/bulletins/10230134.md), 2023-01-17, Service bulletin: ELECTRICAL SYSTEM; BACK OVER PREVENTION. UAS, UAQ, UCS, UAV, UCV and UCQ Radio Over The Air Software Version Updates This bulletin provides information regarding the latest Flash 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. This is part of a two step FOTA update, first update brings software level to 22.61 and this second FOTA update will take the software to 22.64. National launch for this second step is May 24, 2021. Customers may experience one or more of the following:Navigation is incorrect or can not calculate route. GPS locations is inaccurate. Uconnect radio apps are all inoperable. Backup camera screen is blue \(DT and KL\). Green horizontal lines appear across screen \(DT and KL\). Anti\-theft code request message. Backup camera screen is blank. Lines appear across screen. Radio control screen is blank or locked. Radio reset intermittently. Unable to adjust audio volume. Unable to switch modes between AM, FM, SAT or Media. In addition the following enhancements are included in this update:Carplay® connectivity improvement. Improvement to Bluetooth® phone pairing. Bluetooth devices unresponsive. Improved sound quality when using a Bluetooth phone.
- [08\-003\-22 REV. A](/bulletins/10229816.md), 2023-01-17, Service bulletin: STEERING; EQUIPMENT:ELECTRICAL:INFOTAINMENT; BACK OVER PREVENTION. UAQ and UCQ Radio Enhancements Customers may experience one or more of the following: ? \*\*Wi\-Fi hotspot connection failure. ? Speaker popping, crackle noise during Voice Recognition \(VR\) response and navigation guidance. ? Mobile Station Integrated Services Digital Network \(MSISDN\) missing from radio, no connected services working.\*\* ? Intermittent, black radio display screen \(Rear View Camera \(RVC\) not affected\). ? Intermittent, radio freezes \(RVC not affected\). ? Wireless connectivity pairing and/or connection issues. ? Lost radio presets. ? Radio channels change by itself. ? SXMT icon inoperative. ? SXMT favorite song not displaying/playing. ? Incorrect navigation address/location/directions. ? Backup camera has black display screen or only displays Check Entire Surroundings with black screen \(occurs when vehicle is shifted immediately to reverse upon key\-on before RVC signal is received, recoverable with key cycle\) . ? High pitch chime noise. ? Contact list not loading. ? Device not supported message. ? Remote app inoperative. ? Travel\-Link fuel price incorrect. ? Backup camera gridlines missing. ? Unable to adjust volume. In addition, the following enhancement are included in this update: ? Enables map updates. ? Heavy Duty \(HD\) Truck USB HUB improvements. ? HD Truck heated steering wheel improvements This bulletin involves inspecting and if required, updating the radio software level to 40.1. Depending on the radio?s current software level the radio may need a one or two USB update.
- [S2218000023](/bulletins/10229769.md), 2023-01-17, Service bulletin: EXTERIOR LIGHTING; BACK OVER PREVENTION. Malfunction Indicator Lamp \(MIL\) Illuminated. Diagnostic Trouble Code \(DTC\) U02A3 ? Lost Communication ith Particulate Matter \(PM\) Sensor, Set After PM Sensor Replacement.
- [1807922](/bulletins/10228031.md), 2022-12-19, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PRESSURE/TEMPERATURE SENSOR; POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE:SOFTWARE; POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; PARKING BRAKE; EXTERIOR LIGHTING. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more ofthe following DTCs have been set: P1D83 \- Implausible Engine Oil Temperature Signal Received. P2610 \- PCM Internal Engine Off Timer Performance. Customers may experience one or more of the following: An audible clunk after applying throttle from a coasting condition, predominantlyin fifth and sixth gear while driving 48 \- 72 kph \(30 \- 45 mph\). Software was updated to better address this condition. A message on the instrument cluster stating ?Speed limiter ready? afterthe first press of the speed limiter button and the Active Vehicle Speed Limiter \(AVSL\) is inoperative\(Equipped with NH2 Sales Code Only\). Inform the customer after the software update thatthe proper operative will be when the customer presses the speed limiter button twice, a messageon the instrument cluster stating ?Speed limiter ready? and the AVSL feature will work correctly \(Equipped with NH2 Sales Code Only\).

JSON: [/v1/bulletins/10229346](/v1/bulletins/10229346)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%201805620&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10229346&vehicle=Service%20bulletin%201805620)