2021-2024 Jeep Ram RKE Button Functions Not Working TSB

Symptoms

If you own a 2021-2024 Jeep, Ram, or Dodge vehicle and are experiencing your Jeep Ram RKE not working, or intermittent response from your key fob, you're not alone. Owners frequently report that the "Remote Keyless Entry (RKE) Button Functions Does Not Work" or there is an "Intermittent Vehicle Response When Using the RKE". In some cases, the key may even appear as "Key Not Programmed", preventing normal vehicle operation. Technicians may find it challenging to consistently replicate these issues.

Fault Codes / DTCs

When diagnosing the RKE system, technicians may encounter specific Diagnostic Trouble Codes (DTCs) related to the Passive Entry (PE) or remote start systems. These codes can indicate underlying issues with antenna circuits:

Code	Description
B1A76-11	Remote Start Antenna Circuit-Circuit Short to Ground
B1A76-13	Remote Start Antenna Circuit-Circuit Open
B1A71-13	Passive Entry Antennas 1 Circuit Open
B1A72-13	Passive Entry Antennas 2 Circuit Open
B1A73-13	Passive Entry Antennas 3 Circuit Open
B1A74-13	Passive Entry Antennas 4 Circuit Open
B1A75-13	Passive Entry Antennas 5 Circuit Open

Diagnosis / Trigger Conditions

Diagnosing the Jeep Ram RKE not working issue involves several steps to pinpoint the root cause. If the vehicle is setting DTCs related to Passive Entry or remote start systems, these codes serve as the initial guide to identify potential antenna-related problems.

If no DTCs are present, technicians should use a scan tool to verify the Radio Frequency Hub Module (RFHM) data. This step confirms whether the vehicle recognizes the key fobs as properly programmed. If an OEM key fob is presented with an issue but isn't listed as programmed, the appropriate procedure for pairing new or additional key fobs should be followed.

For key fobs that are programmed but still exhibiting issues, further checks are necessary. This includes removing the coin battery from the key fob and using a voltmeter to ensure it has the correct voltage, which should not be below 2.6V. The key fob's remote signal and battery performance should also be tested using an ATEQ VT56 tester to confirm adequate signal strength. Additionally, technicians must investigate if any aftermarket LED light installations, either external or internal, are interfering with the RKE signal. Finally, confirming that the intermittent operation is not confined to a single location helps rule out external environmental interference.

Repair Procedure Summary

Technical Service Bulletin S2408000015 Rev. B outlines a comprehensive approach to resolving RKE button function issues. The repair process begins with diagnosing any Diagnostic Trouble Codes (DTCs) related to Passive Entry (PE) or remote start systems, such as B1A76-11 or B1A71-13. These codes help identify antenna circuit problems that could be impacting key fob performance.

If no DTCs are found, the technician will use a scan tool to check the Radio Frequency Hub Module (RFHM) data to confirm if the key fobs are properly programmed to the vehicle. If an OEM key fob is not recognized, the technician will follow the standard procedure to pair it.

For programmed key fobs that are still malfunctioning, the procedure involves several checks: first, the key fob's coin battery is removed and tested with a voltmeter to ensure it has a voltage above 2.6V; if not, the battery is replaced. Next, the key fob's remote signal and battery performance are tested using an ATEQ VT56 tester to verify signal strength. The technician will also check for any aftermarket LED light installations that could be causing interference. Finally, the RKE system's performance is observed at different vehicle parking locations to eliminate the possibility of external signal interference.

Required Tools or Parts

To properly diagnose and address the RKE system issues, technicians will utilize specific tools:

• Voltmeter: Used to verify the voltage of the key fob's coin battery.
• ATEQ VT56 tester: Employed to test the key fob's remote signal and battery performance, ensuring good signal strength.

Important Warnings

Owners and technicians should be aware of the following important information regarding this communication:

• "This document does not authorize warranty repairs." It serves as a record of past experiences and does not provide conclusions about vehicle issues. Technicians are responsible for determining the appropriate course of action.
• If a solution is not found after following the outlined diagnostic steps, technicians are advised to "Contact STAR Center, or your Technical Assistance Center Via TechCONNECT or eCONTACT ticket."

Owner Action

If you are experiencing your Jeep Ram RKE not working or other key fob issues, it is recommended to schedule an appointment with an authorized service center. Inform the technician about the specific symptoms you are observing. Reference Technical Service Bulletin S2408000015 Rev. B, as it provides a detailed diagnostic and repair procedure for these types of concerns.

Source: NHTSA TSB ID 11000866