# Service bulletin W20 Combo

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: 10187674
- Published by NHTSA: 2021\-03\-01
- Manufacturer's number: W20 Combo
- Manufacturer's date: 2020\-12\-10
- NHTSA component: POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

Customer Satisfaction Notification W20 Reprogram Powertrain Control Module

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10187674-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10187674-9999.pdf)

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

## Components

Electrical system, Transmission and driveline, Software

## Vehicles listed

- 2018 to 2019 JEEP CHEROKEE
- 2018 JEEP COMPASS
- 2018 JEEP RENEGADE

## Recalls for the same vehicles and component

- [18V332000](/recalls/nhtsa/18V332000.md), 2018-05-17: ELECTRICAL SYSTEM:SOFTWARE; VEHICLE SPEED CONTROL:CRUISE CONTROL; ELECTRICAL SYSTEM:WIRING

## Other bulletins for the same vehicles and component

- [BulletinA](/bulletins/10240002.md), 2023-07-31, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Customer Satisfaction Notification ZD7 \- Radio Software Update
- [08\-229\-22](/bulletins/10229805.md), 2023-01-17, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Over The Air Software Version Update to 22.66 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 IR22.64 and IR22.65 to IR22.66. The national launch for the FOTA is expected to begin on January 09, 2023. ? Wi\-Fi hotspot connection not working. ? No internet connection message on the phone when trying to connect to a device
- [0809317](/bulletins/10224940.md), 2022-10-31, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. Radio Enhancements This bulletin involves inspecting and if required, updating the radio software. Customers may experience one or more of the following:Radio may reset or go blank. Unable to enter non\-alphanumeric \(Emoji\) characters into the Bluetooth phone book for caller?s name. Unable to communicate with the radio using wiTECH.
- [0806421](/bulletins/10221211.md), 2022-09-26, Service bulletin: ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC; WHEELS; ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING; SEAT BELTS; AIR BAGS. Flash: Radio Frequency Hub Module \(RFHM\) Enhancements This bulletin involves reprogramming the RFHM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code \(DTC\) has been set:B1053\-64 RFHM \(Keyless Ignition Node \(KIN\) Communication\) \- Signal Plausibility Failure \(Software has been updated to better address this DTC\). In addition, the customer may notice the following condition\(s\): Service Passive Entry Light" on cluster and MIL code B1053\-64. Vehicle will not shut off with DTC B1053\-64. Vehicle may not start with DTC B1053\-64. With the ignition in the run position and the engine not running, the vehicle may not turn itself off after 30 minutes. Doors may not unlock when using the Remote Keyless Entry \(RKE\) Fob.\(2015 only\) Tire pressure monitoring \(TPM\) light may illuminate when using the winter tires in winter mode functionality.\(2015\-2016 only\) After an engine start and the doors are closed, a message in the cluster may be displayed ?Key Not Detected? when the key is actually present.\(2015\-2016 only\) Only a message is displayed, the vehicle will start.
- [0809921](/bulletins/10212486.md), 2022-05-31, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. UAQ and UCQ Radio Enhancements This bulletin involves inspecting and if required, updating the radio software level to 39.5 Customers may experience one or more of the following: Intermittent, black radio display screen. Intermittent, radio freezes. Bluetooth® pairing and/or connection issues. Lost radio presets. Radio channels change by itself. SXM icon inoperative. In addition, the following enhancement are included in this update:Enables map updates.
- [08\-108\-20](/bulletins/10187716.md), 2021-03-01, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. UDQ Radio Enhancements This bulletin involves inspecting and if required, updating the radio software level to 21.8 Customers may experience one or more of the following:Disabled Carplay® for rear facing second row USB ports. Radio may reset, turn itself off and then back on again. Radio display screen lock up. Park assist chime will continue to chime after the vehicle is turned off. Radio will display the incorrect speed limit in kph when approaching a road speed camera. After a key cycle, the radio language may change to Italian.
- [08\-067\-20 REV. B](/bulletins/10187714.md), 2021-03-01, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM; EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. UGQ Radio Enhancements This bulletin involves inspecting the software level to see if the radio needs one or two USB flash drive\(s\) to update the radio software level to 39.2.It is critical that every step of the bulletin is reviewed and performed properly. If any steps are missed the radio can be damaged and may need to be replaced. Customers may experience one or more of the following:If the language is set in Spanish, and the customer tries to search for an address with Voice Recognition \(VR\), it will not recognize these locations.VR can not find street names / location in Catalan language \(present in Barcelona area and nearby\). To correct this symptom, the radio SW has to be at QR39.2 and the Nav Map SW version has to be at 19Q2. In the Uconnect App, under Live\>Jeep Skills\>Indicator, the ?Current? meter will display the incorrect amperage readings.The battery current indicator will display the incorrect value, it will show the number 65536, stating that it is exactly in the full range scale. Audio inoperative. No audio from any media source. No audio from navigation prompts. No audio from cell or initial message prompt.The audio/sound will continue to work properly for the chimes and touchscreen beeps. Lost preset issue. The soft key for the heated seats and heated steering wheel are grayed out on the display screen and these features do not work. If the vehicle has been turned off for a long time, the settings for auto folding side mirrors is turned off \(2018\). Radio resets intermittently \(2018\). Radio display screen locks up \(2018\). Park assist chime will continue to chime, after the vehicle is turned off \(2018\). Radio will display the incorrect speed limit in kph, when approaching a road speed camera \(2018\). Uconnect Live feature may not function properly \(2018\).
- [18\-063\-20 REV. B](/bulletins/10184473.md), 2020-12-21, Service bulletin: ENGINE; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT ADAPTIVE/MOBILITY. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\):P20EE\-00 \- SCR NOx Catalyst Efficiency Below Threshold Bank 1 Catalyst 1. P24B2\-00 \- Particulate Matter Sensor Circuit Intermittent. Customers may also describe the following condition:Engine Start/Stop inoperative. Remote start inoperative\(South Korea vehicles only\). Incorrect vehicle speed reported by the cluster when the driver changes the speed units. Undesirable pedal response in 4\-LO mode. Selective Catalytic Reduction \(SCR\) system fault codes logged at higher vehicle speeds. Alternator load protection at idle. Check Engine Lamp or low battery indicator
- [S2008000154](/bulletins/10183032.md), 2020-11-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. B1053\-64 RFHM \(Kin Communication\) \- Signal Plausibility Failure Set In The RF Hub. EVIC Displays Service Passive Entry
- [18\-088\-20](/bulletins/10181624.md), 2020-10-26, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. Flash: Dosing Control Unit \(DCU\) Updates This bulletin involves reprogramming the DCU with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs have been set:U05A3\-00 \- Invalid Data Received From Reductant Quality Module. P20F4\-00 \- Reductant Consumption Too Low. P20F5\-00 \- Reductant Consumption Too High. P208E\-00 \- Reductant Injector Stuck Closed \- Bank 1 Unit 1.

JSON: [/v1/bulletins/10187674](/v1/bulletins/10187674)

[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%20W20%20Combo&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10187674&vehicle=Service%20bulletin%20W20%20Combo)