2023 Jeep Wrangler Heated Steering Wheel Not Working TSB 08-120-26

Owners of 2023 Jeep Wrangler vehicles equipped with a heated steering wheel (Sales Code NHS) may notice that the feature is not performing as expected. This could manifest as the heated steering wheel not getting hot enough or failing to work entirely. Technical Service Bulletin (TSB) 08-120-26 has been released to provide a solution for this specific concern.

This TSB, identified as 08-120-26, applies to 2023 Jeep Wrangler models sold in North America markets. The root cause of the problem has been identified as an issue with the Comfort Seat Wheel Module (CSWM) software.

Symptoms

Customers may experience the following symptoms related to their Jeep Wrangler heated steering wheel:

• "Heated Steering Wheel does not get hot enough or does not work."

These symptoms indicate a potential software malfunction within the CSWM that controls the heating function of the steering wheel.

Diagnosis and Trigger Conditions

The primary cause for the Jeep Wrangler heated steering wheel malfunction is identified as CSWM software. To diagnose this issue, technicians will use a wiTECH scan tool along with the diagnostic procedures available in DealerCONNECT/Service Library.

It's important for technicians to verify that all related systems are functioning correctly. If any Diagnostic Trouble Codes (DTCs) or other symptom conditions are present that are not listed in this bulletin, they must be recorded and repaired before proceeding with the TSB. If the customer's concern directly matches the symptom described in TSB 08-120-26, the repair procedure can be initiated. Dealers are instructed to use failure code "CC" (Customer Concern) when processing claims related to this specific symptom.

Important Warnings for Technicians

During the repair process, technicians must adhere to critical instructions to prevent further issues:

• Battery Voltage: "Install a battery charger to ensure battery voltage does not drop below 13.2 volts. Do not allow the charging voltage to climb above 13.5 volts during the flash process."
• Flash Interruption: "If this flash process is interrupted/aborted, the flash should be restarted."

Repair Procedure Summary

The repair for the Jeep Wrangler heated steering wheel issue involves reprogramming the Comfort Seat Wheel Module (CSWM) with the latest available software. This is a two-step process:

1. Reprogramming: The CSWM is reprogrammed using the wiTECH Diagnostic Application. If any issues arise during this flashing process, technicians are advised to submit a ticket to the Helpdesk, which can be found within the Help menu of the wiTECH application.
2. Clearing DTCs: After the reprogramming is complete, all Diagnostic Trouble Codes (DTCs) that may have been set in any module due to the reprogramming process must be cleared. The wiTECH application will automatically display these DTCs, allowing for easy clearing.

Required Tools or Parts

To perform the software update for the CSWM, the following special tool is required:

• wiTECH or Equivalent

Owner Action

If you own a 2023 Jeep Wrangler and are experiencing issues with your Jeep Wrangler heated steering wheel, you should schedule an appointment with an authorized Jeep dealership. The repair, which involves a software update to the Comfort Seat Wheel Module, is reimbursable under warranty provisions.

The labor operation number for this service is 18-52-34-9E, described as "Module, Comfort Seat Wheel (CSWM) - Reprogram." The estimated labor time for this procedure is 0.2 hours, making it a relatively quick service appointment.

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Source: NHTSA ID: 11030235