WenmarOpen by Wenmar Pro

Service bulletin 0806921

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 id10221220
Published by NHTSA2022-09-26
Manufacturer's number0806921
Manufacturer's date2021-04-29
NHTSA componentHYBRID PROPULSION SYSTEM

NHTSA's summary

Detailed Proper PHEV Engine Operation This bulletin is to communicate that when the combustion engine starts for the first time within a key-cycle (either when the vehicle is first operational at the key crank, or while driving), the propulsion system will generally operate in ?series-mode? for up to 60 seconds.

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

Hybrid and electric drive

Vehicles listed
JEEP WRANGLER2021

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

Recalls for the same vehicles and component
20255952025-10-30. High Voltage
25V7410002025-10-30. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
20245662024-09-27. High Voltage
24V7200002024-09-27. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
20236272023-11-22. High Voltage
23V7870002023-11-22. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY

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
S23080001172024-01-08. Service bulletin. Check Engine Light On, P0CA6-00 Hybrid/EV Battery Charging Current High
S20080000312023-10-02. Service bulletin. Low Charging Voltage Displayed On Cluster
S22080001392023-01-17. Service bulletin. Check Engine Lamp (CEL) Multiple Diagnostic Trouble Codes (DTC)
08073212023-01-17. Service bulletin. PHEV Ready Telltale This bulletin is to communicate that a customer may report the vehicle does not start with any warning indicators. A technician can not confirm any faults even if they can duplicate the reported concern.
9004376-12023-01-17. Service bulletin. PUMP, Vacuum Prior to replacing the vacuum pumps, please contact or email FCA Redacted Content. If no response in 15 minutes, proceed with repair.
S22070000012022-12-19. Service bulletin. Coolant Color Looks Lighter Than Service Procedure Coolant
S22080001542022-11-07. Service bulletin. Service Hybrid Electric Vehicle System Message Displayed In The IPC. Vehicle Shakes During A Cold Start And Noise Is Heard Near The P2 Motor. DTC?s U0287-00 And B273C-00
Z272022-10-31. Service bulletin. Customer Satisfaction Notification Z27 PHEV Battery Replacement
91000112022-10-31. Service bulletin. Battery Kit, Hybrid NOTE 1 of 2: Beginning April 1, 2022, a $5,000 penalty will be assessed to dealers who return any visually damaged battery to the supplier. Improper handling of damaged lithium ion batteries can causer property damage, serious injury or even death. Exemptions will not be made for any dealer who fails to follow the appropriate handling process. To read the DCMail communication, go to DealerCONNECT > DCMail (ID: 81758). For details on recyclers, please visit the Mopar Dealer Site Lithium Ion Battery Handling page: https://www.dealers-mopar.com/moparone/retail/programs/battery-program/lithium-ion.jsp NOTE 2 of 2: When replacing the HV battery, or any cooling component within any of the cooling systems, please ensure that the service procedure is followed by using a coolant vacuum fill tool to ensure all trapped air is removed from the coolant system. The battery cooling system is complex with small coolant passages used to cool electronics. It is fed by a small electronic pump that does not develop the pressure head to "burp" the cooling system in the same manner that an engine water pump often will. All electric pumps are designed to sense air in the cooling system. Proper service procedures and proper equipment must be used. Failure to do so may result in vehicle damage or customer return for MIL lights due to air in the cooling system.
S21080001212022-10-17. Service bulletin. Check Engine Light On And Service Hybrid System Displayed. P0A0A-00 High Voltage System Interlock Circuit ?A? Is Active