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Service bulletin 0808821

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10223358
Published by NHTSA2022-10-17
Manufacturer's number0808821
Manufacturer's date2021-05-21
NHTSA componentELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

NHTSA's summary

Radio Enhancements This bulletin involves updating the radio software level to 2036.06. Customers may experience the following:Product plan UUID is not correct in Carplay®. Carplay audio does not always resume. Battery save vs. Battery Charge toggles back to Battery Charge after sleep cycle. When ?Charge Now? is selected on key-off outside of the charging schedule ? it does nothing. In addition, the following enhancements are included:Update power supply source from 1 amp to 2.1 amps. GOOGLE® certification enhancements - screen flickers

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Equipment and accessories

Vehicles listed
CHRYSLER PACIFICA2021
DODGE CHALLENGER2021
DODGE CHARGER2021
DODGE DURANGO2021
JEEP CHEROKEE2021
JEEP GLADIATOR2021
JEEP GRAND CHEROKEE2021
JEEP WRANGLER2021
RAM 15002021
RAM 25002021
RAM 35002021
RAM 45002021
RAM 55002021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
26V3620002026-06-04. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
25V8770002025-12-17. EQUIPMENT ADAPTIVE/MOBILITY:WHEELCHAIR RESTRAINTS/SECUREMENT:LATCH/ANCHOR:
25V8760002025-12-17. EQUIPMENT ADAPTIVE/MOBILITY:WHEELCHAIR RESTRAINTS/SECUREMENT:LATCH/ANCHOR:
25V7410002025-10-30. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
25V2980002025-05-08. AIR BAGS; ELECTRICAL SYSTEM:WIRING
24V7200002024-09-27. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
24V6520002024-09-05. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
23V7870002023-11-22. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
20230262023-02-09. Electrical
23V0600002023-02-09. ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
S26080000382026-10-16. Service bulletin. High Voltage Battery Has Lower SOC After Overnight Sleep Cycle
08-366-262026-10-16. Service bulletin. Flash: Drivetrain Control Module (DTCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● C147B-92 - Front Axle Disconnect Sensor Performance or Incorrect Operation Customers may comment on one or more of the following: ● 4WD system warning lights, service messages, or flashing indicators are displayed in the Instrument Panel Cluster (IPC). ● The vehicle does not engage 4WD properly. This bulletin involves reprogramming the DTCM with the latest available software.
S26080000382026-10-16. Service bulletin. High Voltage Battery Has Lower SOC After Overnight Sleep Cycle
08-366-262026-10-16. Service bulletin. Flash: Drivetrain Control Module (DTCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● C147B-92 - Front Axle Disconnect Sensor Performance or Incorrect Operation Customers may comment on one or more of the following: ● 4WD system warning lights, service messages, or flashing indicators are displayed in the Instrument Panel Cluster (IPC). ● The vehicle does not engage 4WD properly. This bulletin involves reprogramming the DTCM with the latest available software.
S26210000062026-10-07. Service bulletin. Note: Document released 10/2/2026. Multiple Warning Indicators On In The IPC. ESM - PRNDL Flashing. And The Vehicle Will Not Shift Into Gear. The Wipers May Be On, With An Electric Parking Brake Unavailable.
08-221-26 REV. B2026-09-30. Service bulletin. 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
91009052026-09-17. Service bulletin. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
91009002026-09-17. Service bulletin. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
91009022026-09-17. Service bulletin. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
91009012026-09-17. Service bulletin. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.