2025 Jeep Wrangler DASM Software Update TSB 08-004-26

Owners of the 2025 Jeep Wrangler may experience issues related to the Driver Assistant System Module (DASM). These problems can manifest as a Malfunction Indicator Lamp (MIL) illumination or specific diagnostic trouble codes. This TSB, 08-004-26, provides a software solution for these concerns.

This bulletin supersedes Technical Service Bulletin (TSB) 08-188-25 REV. A, which was issued on December 6, 2024. The current revision, dated January 8, 2026, includes an updated bulletin release date year from 2024 to 2025.

Symptoms

Customers may observe a Malfunction Indicator Lamp (MIL) illuminating on the dashboard. Additionally, the instrument panel cluster (IPC) might intermittently display the message: "ACC/FCW Unavailable Service Required". These symptoms indicate a potential issue with the DASM software in your 2025 Jeep Wrangler.

Fault Codes / DTCs

The following Diagnostic Trouble Codes (DTCs) may be set in the vehicle's system:

Code	Description	Module
C2206-00	Vehicle Configuration Mismatch	DASM
C2318-49	Front Camera - Internal Electronic Failure	DASM

It is important to note that DTC C2206-00 can sometimes be triggered after an aftermarket tire installation or modification. The updated software provided by this TSB is specifically designed to address this condition.

Diagnosis / Trigger Conditions

To diagnose these issues, a technician will use a wiTECH Scan Tool. They will verify that all related systems are functioning correctly according to the Diagnostic Procedures available in DealerCONNECT/Service Library. If any other DTCs or symptom conditions are present beyond those listed in this bulletin, they must be addressed and repaired first. If the customer's reported symptoms match those described, the repair procedure outlined in TSB 08-004-26 should be followed.

Repair Procedure Summary

The primary repair for the 2025 Jeep Wrangler DASM update involves reprogramming the Driver Assistant System Module (DASM) with the latest available software. This process requires careful attention to the vehicle's battery voltage.

First, a battery charger must be connected to ensure the battery voltage remains between 13.2 and 13.5 volts throughout the flash process. It is crucial that the voltage does not drop below 13.2 volts or climb above 13.5 volts. If the flash process is interrupted or aborted for any reason, it must be restarted from the beginning.

Using the wiTECH Diagnostic Application, the technician will reprogram the DASM. If any issues arise during this flashing process, a ticket should be submitted to the Helpdesk. After successful reprogramming, any DTCs that may have been set in any modules due to the reprogramming will be cleared. The wiTECH application automatically presents and allows the clearing of these codes.

Required Tools or Parts

To perform this service, the following specialized tool is required:

• wiTECH or Equivalent: This diagnostic tool is necessary for reprogramming the DASM and clearing DTCs.

Important Warnings

Do not allow the battery charging voltage to drop below 13.2 volts or climb above 13.5 volts during the flash process, as this can interrupt or abort the software update. If the flash process is interrupted, it must be restarted.

Owner Action

If your 2025 Jeep Wrangler is exhibiting a Malfunction Indicator Lamp, displaying the "ACC/FCW Unavailable Service Required" message, or has the DTCs C2206-00 or C2318-49, you should schedule an appointment with your authorized Jeep dealership. The dealer will perform the necessary DASM software update under warranty provisions.

NHTSA ID: 11027625