2022-2024 Jeep Dodge Ram Key Fob Battery Low Warning

Owners of 2022-2024 Jeep, Dodge, and Ram vehicles may encounter a "Key Fob Battery Low" warning message displayed on the Instrument Panel Cluster (IPC). This issue, documented under manufacturer communication S2308000151, points to a potential problem with the key fob's battery voltage.

When this warning appears, it's often accompanied by specific Diagnostic Trouble Codes (DTCs) that help technicians pinpoint the exact key fob experiencing the low battery condition. Addressing this promptly can prevent unexpected issues with vehicle access and starting.

Symptoms

The primary symptom is the illumination of a "Key Fob Battery Low" message on your vehicle's Instrument Panel Cluster (IPC). This message serves as a direct alert that one of your key fobs has a depleted battery.

Fault Codes / DTCs

Technicians may observe one or both of the following Diagnostic Trouble Codes (DTCs) in conjunction with the "Key Fob Battery Low" message:

Code	Description
B1A10-00	RKE Fob 1 Battery Low
B1A11-00	RKE Fob 2 Battery Low

These codes indicate that the key fob battery voltage has dropped to a critical level of 2.3 volts or lower, signaling the need for attention.

Diagnosis and Trigger Conditions

The "Key Fob Battery Low" warning and associated DTCs are triggered when the key fob battery voltage falls below 2.3 volts. To accurately diagnose the issue, technicians are advised to use specialized tools and follow a specific procedure.

Initial diagnosis involves using the TPM Analyzer tool 2046300080 to assess the Remote Keyless Entry (RKE) performance and signal strength for the key fob battery. If weak signals are detected, it's crucial to validate the internal contacts within the key fob for proper connection before considering a battery or key fob replacement. The battery voltage can also be directly measured with a voltmeter once the battery is removed from the fob.

If the key fob battery tests as good, the investigation should shift to potential external factors. Aftermarket equipment, such as cell phone chargers, cell phones, or LED lamps, can sometimes create signal interference that mimics a low battery condition. Technicians should inspect for any such aftermarket installed equipment. For intermittent issues, ensuring all system antennas are securely installed and undamaged is also a critical step.

Repair Procedure Summary

Addressing the "Key Fob Battery Low" warning and associated DTCs involves a systematic approach. The first step is to use the TPM Analyzer tool 2046300080 to test the key fob's RKE performance and signal strength. If the signal is weak, the internal contacts of the key fob should be inspected to ensure they are making good contact with the battery.

If the battery voltage is confirmed to be at or below 2.3V, the key fob battery should be replaced. If the battery is found to be in good condition, the focus shifts to identifying potential sources of signal interference. This includes checking for aftermarket electronic devices like cell phone chargers, cell phones, or LED lamps that might be causing interference. Additionally, all system antennas should be checked for secure connections and any signs of damage.

Required Tools or Parts

For proper diagnosis and repair, the following specialized tool is mentioned:

• TPM Analyzer tool 2046300080

Important Warnings

It is important for owners and technicians to note the following statement from the manufacturer communication S2308000151:

"This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Online does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate course of action."

This means that while the document provides guidance based on past cases, it does not guarantee warranty coverage for the repair, and the final decision on the course of action rests with the technician.

Owner Action

If your 2022-2024 Jeep, Dodge, or Ram vehicle displays a "Key Fob Battery Low" warning, or if you suspect a key fob battery issue, it is recommended to visit your dealership or a qualified service center. Inform them about the specific warning message and mention manufacturer communication S2308000151. They can perform the necessary diagnostic steps, including testing the key fob battery and checking for potential interference, to resolve the issue.

NHTSA ID: 11000905