2022-2023 Jeep Compass FCW System Sensitivity TSB

Owners of 2022-2023 Jeep Compass vehicles equipped with Full Speed FWD Collision Warn Plus (Sales Code LSU), Pedestrian/Cyclist Emergency Braking (Sales Code LST), and Drowsy Driver Detection (Sales Code XNM) may notice that their Forward Collision Warning (FCW) system is too sensitive. This can lead to unnecessary braking and warnings, even when the driver perceives no immediate danger. This condition, where the Jeep Compass FCW sensitive system acts erratically, is addressed by Technical Service Bulletin (TSB) 08-127-24.

This bulletin, TSB 08-127-24 REV. A, was issued on November 23, 2024, and supersedes the previous TSB 08-127-24 dated May 16, 2024. The updated bulletin includes additional market applicability and revised customer symptom descriptions.

Symptoms

If you own a 2022-2023 Jeep Compass, you might experience the following symptom related to the Driver Assistant System Module (DASM):

• "The forward collision warning (FCW) system seems overly sensitive, braking and warning the driver well before they believe it is needed."

This indicates that the Jeep Compass FCW sensitive behavior is triggering alerts and braking actions prematurely, causing frustration and potential confusion for the driver.

Diagnosis / Trigger Conditions

To diagnose this issue, technicians will use a wiTECH scan tool along with the diagnostic procedures available in DealerCONNECT/Service Library. The primary goal is to verify that all related systems are functioning correctly. If any Diagnostic Trouble Codes (DTCs) or other symptoms are present, they must be recorded and addressed before proceeding with the TSB. If the customer's concern matches the described symptom of a Jeep Compass FCW sensitive system, the repair procedure outlined in TSB 08-127-24 should be performed.

Repair Procedure Summary

The resolution for the overly sensitive Forward Collision Warning (FCW) system involves updating the software for the Driver Assistant System Module (DASM). The specific software version to be installed is R13. The process is as follows:

1. Prepare the Vehicle: A battery charger must be connected to the vehicle to ensure the battery voltage remains between 13.2 and 13.5 volts throughout the flashing process. This prevents power fluctuations that could interrupt the update.
2. Reprogram DASM: The technician will use the wiTECH Diagnostic Application to reprogram the DASM to software R13. If the flashing process is interrupted or aborted for any reason, it must be restarted.
3. Clear DTCs: After the reprogramming is complete, any Diagnostic Trouble Codes (DTCs) that may have been set in any modules due to the reprogramming process will be cleared using the wiTECH application.

Required Tools or Parts

The primary tool required for this service is the wiTECH diagnostic system or an equivalent tool capable of performing module reprogramming.

Important Warnings

During the reprogramming process, it is crucial to adhere to specific voltage requirements to prevent issues:

• Do not allow the charging voltage to drop below 13.2 volts.
• Do not allow the charging voltage to climb above 13.5 volts during the flash process.
• If this flash process is interrupted or aborted, the flash should be restarted immediately.

Owner Action

If your 2022-2023 Jeep Compass is exhibiting an overly sensitive Forward Collision Warning (FCW) system, you should schedule an appointment with an authorized Jeep dealership. Inform them about the Jeep Compass FCW sensitive behavior. The repair, which involves reprogramming the DASM to software R13 under TSB 08-127-24, is reimbursable under the provisions of your vehicle's warranty. The estimated labor time for this procedure is 0.3 hours.

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Source: NHTSA ID: 11010780