June 24, 2021 Service bulletin

12V Battery Low Charge This bulletin involves testing and possibly replacing the 12V battery

Jeep technical service bulletin 0810621 for 2021 Jeep Wrangler.

Bulletin number: 0810621
Component: Electrical system
Summary: 12V Battery Low Charge This bulletin involves testing and possibly replacing the 12V battery. Technicians or customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: U3007-00 - Control Module Input Power "B" Circuit/Open. C2100-00 - Battery Voltage Low. C05A4-00 - Wheel Speed Sensors Supply Circuit Low. C2129-00 - Battery Voltage. U3006-00 - Control Module Input Power "A" Circuit/Open. B2199-16 - Battery Voltage-Circuit Voltage Below Threshold. B21DD-84 - System Voltage-Signal Below Allowable Range. B2199-16 - Battery Voltage-Circuit Voltage Below Threshold. Technicians or customers may also experience one or more of the following:Depleted 12V battery at delivery to dealer. Vehicle will not start.

Owners of these vehicles have filed 310 complaints in the electrical category.

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