# Service bulletin 08\-074\-21

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: 10198426
- Published by NHTSA: 2021\-06\-28
- Manufacturer's number: 08\-074\-21
- Manufacturer's date: 2021\-05\-07
- NHTSA component: ELECTRICAL SYSTEM; EQUIPMENT

## NHTSA's summary

UGQ, UGV, UJV and UJQ Radio Enhancements This bulletin involves inspecting the software level to see if the radio needs oneor two USB flash drive\(s\) to update the radio software level to 39.2. Customers may experience one or more of the following: Voice recognition \(VR\) fails while road names are written in Catalan. After the update to software level MR\-28.31, the Amperometer inside Jeepskills shows values too high. The radio may lose some or all programmed presets. Volume blocked/uncontrollable. Heating Steering wheel and seat SK greyed out. Eco Drive trips saved issue. 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. Frequent pop\-ups during startup saying device not connected \- Uconnect LIVE. Radio will display the incorrect speed limit in kph when approaching a roadspeed camera\(2018 WK Only\). Uconnect Live Apps restricted to only MyCar, ecoDrive and Jeep Skills\(2018 WK Only\). Russian language missing in the radio setting menu\(2018 WK with UGQ Only\). If the radio is set for Russian language, UConnect displays unknown symbolson the ?Off Road Page?\(2018 WK with UGQ Only\). Could not disable the feature for the heated seat and heated steering wheelturned on automatically at startup\(2018 WK with UGQ Only\). In addition the following enhancements are included: Navigation improvements. Bluetooth improvements. VR improvements. Russian language enhancements \(2018 WK with UGQ Only\)

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10198426-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10198426-9999.pdf)

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

## Components

Electrical system, Equipment and accessories

## Vehicles listed

- 2018 to 2020 DODGE DURANGO
- 2018 to 2021 JEEP GRAND CHEROKEE

## Recalls for the same vehicles and component

- [2018593](/recalls/tc/2018593.md), 2018-10-29: Accessories
- [18V759000](/recalls/nhtsa/18V759000.md), 2018-10-29: EQUIPMENT:ACCESSORY:FLOOR MAT
- [18V524000](/recalls/nhtsa/18V524000.md), 2018-08-09: ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD
- [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

- [08\-221\-26 REV. B](/bulletins/11037582.md), 2026-09-30, Service bulletin: ELECTRICAL SYSTEM. R1H Radio U41.10 Software Update \- Dealer Option Customers may experience one or more of the following: SYMPTOM: ● \*\*Speakers may emit a humming, screeching, buzzing, clicking, or bass noise \(not related to the amplifier\).\*\* ● FCW OFF light ON with no DTCs and can't turn off. ● Blank screen and then reboot every 2 minutes and 40 seconds. \(Rearview Camera Functions Normally\). ● Paddle shifters not working/no longer a setting. ● Autolocks not working. ● Auto headlights not working. ● AM station not working \(Appears some of the vehicles PROXI defaults to "1" which is absent for AM\). ● Album Art flickering issue. ● Blank screen and then reboot every 2 minutes and 40 seconds. ● CarPlay icon disappears from main screen while still active, leaving no navigation path back. ● Light/dark theme mismatch between Radio and temperature screens at key\-on Radio experiences lockups, resets, blank screens, and language issues after FOTA. ● Valet mode sends duplicate requests causing HU and vehicle state misalignment. ● Rear seat media page intermittently shows a blank screen. ● Unable to select or drag 'Pitch and Roll' widget on home screen. ● USB playback resumes incorrectly, skipping to next track after reconnect. ● Album art not displayed on HMI despite availability in media. ● Incorrect call timer displayed for conference calls. ● Call status remains 'active' on widget after call ends. ● Second call status not updated on home screen widget. ● Rear entertainment tab intermittently blank when switching apps. ● System crashes for 20 to 30 seconds after voice reply action. ● Media progress bar continues incorrectly after second call acceptance. ● CarPlay device fails to reconnect automatically or manually. ● Rear HVAC lock/unlock text missing while icon is present. ● Visual glitch observed on Front Passenger Display Module \(FPDM\) display. ● Surround view camera accessible while driving across apps \(unexpected behavior\). This bulletin involves inspecting and if required, updating the radio software level to U41.10. Depending on the radio's current software level the radio may need a one or two USB update
- [9100905](/bulletins/11037350.md), 2026-09-17, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [9100900](/bulletins/11037346.md), 2026-09-17, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [9100902](/bulletins/11037345.md), 2026-09-17, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [S2623000001 REV.A](/bulletins/11036771.md), 2026-09-03, Service bulletin: ELECTRICAL SYSTEM. Rotary Shifter Lights Blinking, Shifter Not Moving, Not Going Into Gear.
- [9100866](/bulletins/11035190.md), 2026-07-23, Service bulletin: ELECTRICAL SYSTEM. Display Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders, Warranty, Mopar, Customer Pay and Service Contract. Order "68" part number for New, Unsold units only.
- [9100859](/bulletins/11035072.md), 2026-07-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Before replacing any part, check the DOT on the glass or the PN to make sure you choose the replacement part from the correct supplier: DOT 615 \- 6NC10TRMAH \- CIE Supplier DOT 1038 \- 6NC07TRMAR \- CIE Supplier DOT 1065 \- 7TF32TRMAB, 7TF33TRMAB \- HCMF Supplier
- [08\-274\-26](/bulletins/11035048.md), 2026-07-18, Service bulletin: ELECTRICAL SYSTEM; SEATS. Power Folding Seat Wire Harness Pinched Customers may experience one or more of the following: SYMPTOM: ● Battery is depleted. NOTE: Battery depletion may be due to a pinched power folding seat wire harness behind the left quarter panel by the cargo tie down fastener. ● Loss of function of the rear folding seats. ● Rear folding seat behavior is not functioning as expected. This bulletin involves repairing a pinched power folding seat wire harness behind the left quarter panel.
- [112979](/bulletins/11034369.md), 2026-07-02, Service bulletin: ELECTRICAL SYSTEM. CAMERA \- REAR VIEW
- [112980](/bulletins/11034368.md), 2026-07-02, Service bulletin: ELECTRICAL SYSTEM. CAMERA \- REAR VIEW

JSON: [/v1/bulletins/10198426](/v1/bulletins/10198426)

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