2026 Jeep Compass Radar Alignment TSB 08-145-26

Stellantis has released Technical Service Bulletin (TSB) 08-145-26 to address a corner radar dynamic alignment calibration issue affecting certain 2026 Jeep Compass vehicles. This bulletin specifically applies to vehicles equipped with Semi-Automatic Lane Change (Sales Code SJN) and Blind Spot And Cross Path Detection (Sales Code XAN).

It is important to note that this TSB is applicable only to vehicles sold in Enlarged Europe, Middle East & Africa, India, Asia Pacific, and China markets. This bulletin is not applicable to vehicles built for the U.S. market.

Symptoms

Owners of affected 2026 Jeep Compass vehicles may experience a Malfunction Indicator Lamp (MIL) illumination on the dashboard. Technicians diagnosing the vehicle will find a specific Diagnostic Trouble Code (DTC) stored in the system. Additionally, the vehicle may be unable to successfully perform the corner radar dynamic alignment procedure.

Fault Codes / DTCs

The primary diagnostic trouble code associated with this 2026 Jeep Compass radar alignment issue is:

Code	Description
B2EF9-78	Alignment Of The Corner Radar Completed With Failure : Alignment Not Carried Out.

Cause

The root cause of the 2026 Jeep Compass radar alignment problem is identified as a radar software issue. This software anomaly prevents the corner radars from properly completing their dynamic alignment calibration.

Important Warnings

Owners and technicians should be aware of specific conditions and precautions related to this issue and its repair:

• This condition, where the corner radar dynamic alignment procedure cannot be completed, can occur if a radar has recently been replaced or if the vehicle's bumpers have been removed.
• During the reprogramming procedure, it is critical to install a battery charger to maintain stable voltage. The battery voltage must not drop below 13.2 volts, and the charging voltage should not exceed 13.5 volts during the flash process.
• If the software flash process is interrupted or aborted for any reason, it must be restarted from the beginning.

Repair Procedure Summary

The repair for the 2026 Jeep Compass radar alignment issue, as outlined in TSB 08-145-26, involves a software update and subsequent calibration. The process includes:

1. Reprogramming the Corner Radars: All four corner radars on the vehicle must be reprogrammed with the latest available software using the wiTECH Diagnostic Application. If any issues arise during this flash process, technicians are instructed to submit a ticket to the Helpdesk.
2. Clearing Diagnostic Trouble Codes (DTCs): After reprogramming, any DTCs that may have been set in any module will be automatically presented by the wiTECH application and must be cleared.
3. Performing Radar Calibration: The final step involves performing the Sensor/Proximity Radar Calibration procedure. Detailed service procedures for this calibration can be found in the DealerCONNECT/Service Library under Service Info> 5580D32 - Sensor/Proximity Radar Calibration.

Required Tools or Parts

Technicians will require a Scan Tool (wiTECH or equivalent) with the appropriate diagnostic procedures available in DealerCONNECT/Service Library to perform the diagnosis and repair outlined in TSB 08-145-26.

Owner Action

If you own a 2026 Jeep Compass in an affected market and are experiencing a Malfunction Indicator Lamp (MIL) illumination or suspect a radar alignment issue, you should contact your authorized Stellantis dealership. This repair is reimbursable within the provisions of the vehicle's warranty. The dealer will use labor operation number 18-20-09-9P and failure code CC for this service.

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Source: NHTSA ID: 11031322