Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Keyless Entry Indicator
Key Fob Battery Low Indicator - When voltage of keyless entry transmitter (key fob) battery falls below 2.2 volts, transmitter sends a low battery signal to Remote Control Door Lock Receiver (RCDLR). Low battery signal is sent every time transmitter is used for any remote keyless function. RCDLR module communicates low battery messages to Body Control Module (BCM). When BCM receives three consecutive low battery messages from RCDLR module, BCM sends a class 2 serial data message to Instrument Panel Cluster (IPC). IPC illuminates KEY FOB BATTERY LOW indicator in message center whenever ignition is in RUN position. Indicator remains illuminated until a transmitter with a good battery (2.2 volts or greater) is used to perform any remote function. When indicator is illuminated and a transmitter with a weak battery is used to perform any remote function, indicator turns off for approximately 2 seconds and then turns back on.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.