# Service bulletin 08\-015\-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: 10187138
- Published by NHTSA: 2021\-02\-16
- Manufacturer's number: 08\-015\-21
- Manufacturer's date: 2021\-01\-29
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Radio Enhancements This bulletin involves updating the radio software level to 1848.34. Customers may experience one or more of the following:Radio display screen flickers. Radio resets with RPM less than 1000 RPM \(DT and JL with 3.0L Diesel\). Clock loses 6 seconds per day \(JL with 5 inch screen\). Ghost Touch, features, modes and App?s changing without drivers input. Bluetooth pop noise. Pop message ?SXM Wait? displayed for extended period of time. The radio resets.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187138-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187138-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2020 CHRYSLER PACIFICA
- 2020 DODGE CHALLENGER
- 2020 DODGE CHARGER
- 2020 DODGE DURANGO
- 2020 JEEP CHEROKEE
- 2020 JEEP GLADIATOR
- 2020 JEEP GRAND CHEROKEE
- 2020 JEEP WRANGLER
- 2020 RAM 1500
- 2020 RAM 2500
- 2020 RAM 3500
- 2020 RAM 4500

## Recalls for the same vehicles and component

- [26V362000](/recalls/nhtsa/26V362000.md), 2026-06-04: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [25V741000](/recalls/nhtsa/25V741000.md), 2025-10-30: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [25V298000](/recalls/nhtsa/25V298000.md), 2025-05-08: AIR BAGS; ELECTRICAL SYSTEM:WIRING
- [24V720000](/recalls/nhtsa/24V720000.md), 2024-09-27: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [24V652000](/recalls/nhtsa/24V652000.md), 2024-09-05: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [2023008](/recalls/tc/2023008.md), 2023-01-18: Electrical
- [23V010000](/recalls/nhtsa/23V010000.md), 2023-01-17: ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS/RECEPTACLES; HYBRID PROPULSION SYSTEM: INVERTER
- [20V511000](/recalls/nhtsa/20V511000.md), 2020-08-27: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION; ELECTRICAL SYSTEM:SOFTWARE
- [2020254](/recalls/tc/2020254.md), 2020-06-10: Electrical
- [20V334000](/recalls/nhtsa/20V334000.md), 2020-06-09: ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH; ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES

## Other bulletins for the same vehicles and component

- [08\-358\-26](/bulletins/11038548.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM. 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.
- [08\-365\-26](/bulletins/11038525.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM. 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.
- [08\-358\-26](/bulletins/11038511.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM. 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.
- [08\-365\-26](/bulletins/11038488.md), 2026-10-16, Service bulletin: ELECTRICAL SYSTEM. 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.
- [S2621000006](/bulletins/11038331.md), 2026-10-07, Service bulletin: ELECTRICAL SYSTEM. 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.
- [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.
- [9100901](/bulletins/11037344.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.
- [114072](/bulletins/11036362.md), 2026-08-26, Service bulletin: ELECTRICAL SYSTEM. MOTOR \- WINDOW REGULATOR
- [114073](/bulletins/11036361.md), 2026-08-26, Service bulletin: ELECTRICAL SYSTEM. MOTOR \- WINDOW REGULATOR
- [16C Combo Rev3](/bulletins/11036183.md), 2026-08-13, Warranty extension: ELECTRICAL SYSTEM. EMISSION RECALL – NORTH AMERICA Check Engine/Malfunction Indicator Lamp 16C The instrument panel cluster on about 32,587 of the above vehicles may have an inoperable check engine/malfunction indicator lamp \(CEL/MIL\). \(JT\) vehicles: CEL/MIL and cargo lamp indicator function are swapped. \(JL\) vehicles: CEL/MIL will not turn on. The CEL/MIL in and of itself will not affect emissions. However, if there was an emission issue that would require illumination of the CEL/MIL, the customer would not be alerted. The vehicle would be non\-compliant to the OBD II regulation.

JSON: [/v1/bulletins/10187138](/v1/bulletins/10187138)

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