04B – Inoperative Defrosting/Defogging System – 2022-2024 Jeep Grand Cherokee

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February 15, 2024 NHTSA CAMPAIGN NUMBER: 24V111000

Inoperative Defrosting/Defogging System/FMVSS 103

An inoperative windshield defrosting and defogging system may decrease the driver’s visibility, increasing the risk of a crash.

 

NHTSA Campaign Number: 24V111

Manufacturer Chrysler (FCA US, LLC)

Components VISIBILITY

Potential Number of Units Affected 199,143

 

Summary

Chrysler (FCA US, LLC) is recalling certain 2021-2024 Jeep Wrangler and 2022-2024 Jeep Grand Cherokee vehicles. A hybrid control processor (HCP) software error may cause the defrosting and defogging system to be inoperative. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 103, “Windshield Defrosting and Defogging Systems.”

 

Remedy

Dealers will update the HCP software, free of charge. Owner notification letters are expected to be mailed April 5, 2024. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler’s number for this recall is 04B.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

 

Check if your Vehicle has a Recall

 


Reference: 04B / NHTSA 24V-111

 

Remedy available for

2021-2024 (JL) Jeep® Wrangler PHEV
2022-2024 (WL) Jeep® Grand Cherokee PHEV

 

Revision Edition Detail
0 February 2024 Initial Version.

 

SYMPTOM DESCRIPTION

About 199,143 of the above Plug In Hybrid Electric Vehicles (PHEV)s may have been built with incorrectly programmed hybrid control processor (HCP) software which may result in a disabled windshield defrost system under certain conditions. Suspect vehicles may not have a functional defrosting and defogging system under certain conditions. A disabled windshield defrost system may decrease outward visibility in certain driving conditions which may cause a crash without prior warning.

The condition above fails to conform to the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 571.103 S4.1 requires that “Each vehicle shall have a windshield defrosting and defogging system.”

 

SCOPE

This recall applies only to the above Plug-In Hybrid Electric Vehicles (PHEVs).

NOTE: Some vehicles above may have been identified as not involved in this recall and therefore have been excluded from this recall.

 

IMPORTANT:

  • Some of the involved vehicles may be in dealer new vehicle inventory. Federal law requires you to complete this recall service on these vehicles before retail delivery. Violation of this requirement by a dealer could result in a civil penalty of up to $27,168 per vehicle.
  • Some of the involved vehicles may be in dealer used vehicle inventory. Dealers should complete this recall service on these vehicles before retail delivery.
  • Dealers should also perform this recall on vehicles in for service.

Involved vehicles can be determined by using the VIP inquiry process.

 

REPAIR TO BE PERFORMED

Update the Auxiliary Hybrid Control Processor (AHCP) then update the Hybrid Control Processor (HCP) with the latest available software to enable the defrost electric heater, valve, and pump.

IMPORTANT: The AHCP must be updated first before updating the HCP. Flash order sequence is CRITICAL!

Also update the Battery Pack Control Module (BPCM), Integrated Dual Charging Module (IDCM), Powertrain Control Module (PCM) and Transmission Control Module (TCM) if updated software exists for any of those modules.

 

ALTERNATE TRANSPORTATION

Dealers should attempt to minimize customer inconvenience by placing the owner in a loaner vehicle if the vehicle must be held overnight.

 

PARTS INFORMATION

No parts are required to perform this service procedure.

 

PARTS RETURN

No parts return required for this campaign.

 

SPECIAL TOOLS

Number Description
NPN wiTECH MDP
NPN Laptop Computer
NPN wiTECH Software

 

OWNER NOTIFICATION / SERVICE SCHEDULING

All involved vehicle owners known to FCA are being notified of the service requirement by first class mail.  They are requested to schedule appointments for this service with their dealers.  A generic copy of the owner letter is attached.

 

SERVICE PROCEDURE

Update Module Software

 

NOTE: The wiTECH scan tool must be used to perform this Safety Recall.  The wiTECH software is required to be at the latest release level before performing this procedure. 

 

NOTE: The BCPM, AHCP, HCP, IDCM, PCM, and TCM must all be updated to the latest available software at the conclusion of this repair procedure. Refer to all applicable published technical service bulletins for detailed repair procedures regarding updating the BCPM, IDCM, PCM, and TCM software.

 

CAUTION: BPCM must be updated first. Failure to update the AHCP, HCP, IDCM, PCM, and TCM module following an BCPM software update may result in vehicle malfunctions.

 

NOTE: Both the AHCP and AHCP must be at the latest available software calibration level to complete this Safety Recall.

 

NOTE: If this software update flash process is interrupted/aborted, the flash should be restarted.

 

NOTE: It is normal for the high voltage charging lamp on the dash to flash like there is a charging system failure while performing software updates.

 

  1. Install a 12-Volt battery charger. Do not allow the charger to time out during the flash process. Set the battery charger timer (if so equipped) to maintain 12-Volt continuous charge.

 

NOTE: The vehicle MUST NOT be connected to a high voltage battery charger during the flash process.

 

  1. Connect the wiTECH MDP to the vehicle data link connector.

 

  1. Place the ignition in the “RUN” position.

 

  1. Open the wiTECH 2.0 website.

 

  1. Enter your “User id” your “Password” and your “Dealer Code”, then select “Finish” at the bottom of the screen.

 

  1. Starting at the “Vehicle Selection” screen, select the vehicle to be updated.

 

  1. From the “Action Items” screen, select the “All Flashes” tab.

 

CAUTION: Make sure the BPCM calibration software is up to date BEFORE updating any other modules.

 

  1. The BPCM must be updated to the latest available software. Refer to applicable published technical service bulletins for detailed repair procedures regarding updating the BPCM software. Claim the 04B Related LOP for BPCM update if BPCM software requires updating.

 

  • Before updating the BPCM, Disable HV Battery Contactors using wiTECH – Go to the Misc Functions tab / Select Disable HV Battery Contactors / then follow the wiTECH prompts. Wait 5 minutes then use wiTECH to confirm that the contactors are open. If the contactors do not open turn the ignition on then off. Once successful a note will appear on the wiTECH screen indicating the contactors are open.

 

  • After updating the BPCM, enable HV Battery Contactors using wiTECH – Go to the Misc Functions tab / Select Enable HV Battery Contactors For Service / then follow the wiTECH prompts.

 

CAUTION: The AHCP software must be updated first before updating the HCP software. Flash order sequence is CRITICAL!

 

  1. Select “AHCP” by clicking the arrow on the right side of the screen. Read the special flash instructions, then select “OK”.  Continue with Step 10.

 

  • If “AHCP” is not displayed as one of the available flashes, the AHCP software is already at the current software level and does not require updating. Proceed to Step 14.

 

  1. From the “Flash ECU Agreement” page, agree to terms by “Checking the Box”.

 

  1. Select “Flash ECU” and then follow the wiTECH screen instructions to complete the flash.

 

  1. Once the software is confirmed to be at the latest available calibration level, select “View DTCs”.

 

  1. Select the “Clear All DTCs” tab, then click “Clear All DTCs” and then select “Close”. It may be necessary to cycle the ignition to OFF then back to RUN to clear the codes.

 

  1. From the “Action Items” screen, select the “All Flashes” tab.

 

CAUTION: AHCP must be updated before updating the HCP.

 

  1. Select “HCP” by clicking the arrow on the right side of the screen. Read the special flash instructions, then select “OK”.  Continue with Step 16.

 

  • If “HCP” is not displayed as one of the available flashes, the HCP software is already at the current software level and does not require updating. Proceed to Step 21.

 

  1. From the “Flash ECU Agreement” page, agree to terms by “Checking the Box”.

 

  1. Select “Flash ECU” and then follow the wiTECH screen instructions to complete the flash.

 

  1. Once the software is confirmed to be at the latest available calibration level, select “View DTCs”.

 

  1. Select the “Clear All DTCs” tab, then click “Clear All DTCs” and then select “Close”. It may be necessary to cycle the ignition OFF then back to RUN to clear the codes.

 

  1. The IDCM, PCM, and TCM must be updated to the latest available software. Refer to all applicable published technical service bulletins for detailed repair procedures regarding updating the IDCM, PCM, and TCM software. Claim the 04B Related LOPs for IDCM, PCM, and TCM updates if software requires updating.

 

  1. Place the ignition in the “OFF” position and then remove the wiTECH MDP device from the vehicle.

 

  1. Remove the 12-volt battery charger from the vehicle.

 

  1. Return the vehicle to the customer or inventory.

 

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Chronology :

  • On June 21, 2023, FCA US LLC (“FCA US”) Technical Safety and Regulatory Compliance (“TSRC”) organization was notified of a potential issue related to the windshield defrost system being inoperative under certain conditions on some 2021-2024 MY Jeep Wrangler PHEV and 2022-2024 MY Jeep Grand Cherokee PHEV vehicles.
  • From June 2023, through January 2024, FCA US TSRC conducted an analysis of inoperative windshield defrost systems and vehicle history and determined that the affected vehicles may have been built with windshield defrost systems which may not function as intended.
  • On January 10, 2024, FCA US TSRC organization recognized a vehicle software issue existed on certain vehicles related to an inoperative condition with the windshield defrost function, potentially resulting in a noncompliance with FMVSS No. 103.
  • On February 08, 2024, FCA US determined, through the Vehicle Regulations Committee, to conduct a voluntary safety recall of the affected vehicles.

 


7 Affected Products

Vehicles

MAKE MODEL YEAR
JEEP GRAND CHEROKEE 2022-2024
JEEP WRANGLER 2021-2024

 


5 Associated Documents

Recall Acknowledgement

RCAK-24V111-9502.pdf 645.674KB

 


Noncompliance Notice 573 Report

RCLRPT-24V111-8507.PDF 215.685KB

 


FCA US LLC Recall Part Numbers

RMISC-24V111-2936.pdf 96.136KB

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Manufacturer Notices(to Dealers,etc)

RCMN-24V111-3717.pdf 51.456KB

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Remedy Instructions and TSB

RCRIT-24V111-2136.pdf 145.326KB

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Latest Recalls Documents

For the Latest and Most recent Recall Information Visit the link below…

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=24V111&docType=RCL

 


 

Reprogramming

Chrysler J2534 Application Overview

 

DRB III Emulator

Flash Availability - J2534/Pass Thru Device

Vehicle to Diagnostic Tool Reference Chart

 

Chrysler Recommended J2534 Devices

For Chrysler recommended J2534 device, see below table.

J2534 Device Firmware Version
CTC Vehicle Box * 1.9
UCAN 2 1.0
Blue Streak -2534 Global Programmer 2.10
Actia I+ME Passthru 2.07

* Chrysler recommends the CTC Vehicle Box Device for Chrysler SCI ECU reprogramming. SCI reprogramming is used on most PCMs and TCMs prior to the introduction of CAN bus vehicles which began in 2004 (Durango).

 

Compatible J2534 Devices

CarDAQ-Plus 3 All Makes J2534 Reprogramming Tool
CarDAQ-Plus 2 Diagnostic Code Reader and J2534 Programming Tool
CarDAQ-Plus
CarDAQ-M
VSI J2534 ECU Reprogrammer

Bosch Automotive Tools MTECH2 Mastertech II J2534 VCI with Wired/Wireless Capability for OEM Reprogramming and Diagnostics on GM, Ford, FCA, Nissan/Infiniti, Honda/Acura, and Toyota/Lexus Vehicles

RAP2 OEM J2534 Remote Reprogramming Tool

BOSCH Automotive Tools MTECH2 Mastertech II J2534 VCI

Autel MaxiFlash VCI Vehicle Communication Interface J2534 PassThru ECU Programming Device Bluetooth Connection Internet Update Support CAN FD, 4 CAN Channels, DoIP, D-PDU Works with PC or Autel MS909

GODIAG J2534

 


Click on the link below to:

Download J2534 Application

(Install the wiTECH 2.0 J2534 Application on your computer)

Download the Setup Utility

(Configure your microPod/MDP device)

Launch wiTECH 2.0

(Once subscription and users are assigned to a tool please follow this link to access wiTECH)

https://www.mopartsp.com/support

 


Chrysler J2534 Manual

wiTECH Software

www.techauthority.com

 


 

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Last update on 2024-04-17 / Affiliate links / Images from Amazon Product Advertising API

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