2024 Jeep Wrangler RFHM Update for Key Fob Security

Jeep has issued Technical Service Bulletin (TSB) 08-151-25 to provide an important software update for the Radio Frequency Hub Module (RFHM) in the 2024 Jeep Wrangler. This update is designed to enhance vehicle security and prevent potential theft by addressing vulnerabilities related to key fob programming.

The 2024 Jeep Wrangler RFHM update aims to deter unauthorized access and ensure that only legitimate key fobs can be programmed to the vehicle, safeguarding against unwanted drive-offs.

Symptoms

Owners of the 2024 Jeep Wrangler may experience concerns related to vehicle security. The primary symptom addressed by this TSB is the potential for unauthorized key fobs to be programmed through the Radio Frequency Hub Module (RFHM). This could lead to worries about vehicle theft.

Cause

The root cause of this concern is identified as the existing RFHM software. The software, prior to this update, had a vulnerability that could potentially allow unauthorized programming of key fobs, posing a security risk to the vehicle.

Repair Procedure Summary

The repair for this issue involves updating the RFHM module with the latest available software. Technicians will use a diagnostic tool, such as wiTECH, to perform the reprogramming. The process includes:

1. Connecting a battery charger to the vehicle to maintain stable voltage during the flash process.
2. Reprogramming the RFHM with the most current software version.
3. Clearing any Diagnostic Trouble Codes (DTCs) that may have been set in any module due to the reprogramming.

This 2024 Jeep Wrangler RFHM update is a critical step to ensure enhanced vehicle security.

Important Warnings

When performing the RFHM software update, technicians must adhere to specific voltage requirements to prevent issues:

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

Required Tools or Parts

To perform this software update, technicians will require the following:

• wiTECH or Equivalent: A compatible diagnostic scan tool is necessary to access and reprogram the RFHM module.

Owner Action

If you own a 2024 Jeep Wrangler and are concerned about key fob security or wish to ensure your vehicle has the latest security enhancements, you should schedule an appointment with an authorized Jeep dealer. The dealer will perform the necessary software update for the Radio Frequency Hub Module (RFHM).

This service, identified by Labor Operation Number 18-19-12-BB and Failure Code CC, 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: 11018256