# Service bulletin Z27

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: 10225382
- Published by NHTSA: 2022\-10\-31
- Manufacturer's number: Z27
- Manufacturer's date: 2022\-08\-25
- NHTSA component: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY

## NHTSA's summary

Customer Satisfaction Notification Z27 PHEV Battery Replacement

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10225382-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10225382-9999.pdf)

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

## Components

Electrical system, Hybrid and electric drive, High\-voltage battery

## Vehicles listed

- 2021 JEEP WRANGLER

## Recalls for the same vehicles and component

- [25V741000](/recalls/nhtsa/25V741000.md), 2025-10-30: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [24V720000](/recalls/nhtsa/24V720000.md), 2024-09-27: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [23V787000](/recalls/nhtsa/23V787000.md), 2023-11-22: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY

## Other bulletins for the same vehicles and component

- [9004376\-1](/bulletins/10229997.md), 2023-01-17, Service bulletin: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT:PUMP. PUMP, Vacuum Prior to replacing the vacuum pumps, please contact or email FCA Redacted Content. If no response in 15 minutes, proceed with repair.
- [S2207000001](/bulletins/10228011.md), 2022-12-19, Service bulletin: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT:FLUID/COOLANT; UNKNOWN OR OTHER. Coolant Color Looks Lighter Than Service Procedure Coolant
- [0805422](/bulletins/10223184.md), 2022-10-17, Service bulletin: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:MANAGEMENT SYSTEM/ENERGY CONTROL MODULE \(BMS/BECM\); ELECTRICAL SYSTEM. Flash: Battery Pack Control Module \(BPCM\) Diagnostic and System Updates This bulletin involves updating the BPCM with the latest available software. Customers may experience a false Malfunction Indicator Lamp \(MIL\) illumination related to PHEV battery: P1C00\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. P1C01\-00 \- Hybrid/EV Battery Voltage Sense 1 Out Of Range High. P1A9B\-00 \- Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. P0BBD\-00 \- Hybrid Battery Pack Voltage Variation Exceeded Limit. P167B\-00 \- Controlled System Shutdown. U1885\-00 \- Battery Energy Control Module Lost Communication With HCP. P0EDD\-00 \- Hybrid/EV Battery Pack B Deterioration. U0111 \- Lost Communication With Hybrid Battery Pack Sensor Module. P0CA7\-00 \- Hybrid/EV Battery Discharging Current High. P1A0C\-00 \- Battery Energy Control Module System Voltage Low. This software enhancement will improve PHEV battery performance and diagnostics. Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this BPCM update:Hybrid Control Processor \(HCP\), Auxiliary Hybrid Control Processor \(AHCP\) also known as the Power Invertor Module \(PIM\). Transmission Control Module \(TCM\). Powertrain Control Module \(PCM\). Integrated Dual Charging Module \(IDCM\).

JSON: [/v1/bulletins/10225382](/v1/bulletins/10225382)

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