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.
LR Sensor Battery Low
Monitored & Set Condition
- When Monitored: Key ON.
- Set Condition: When the EVIC detects a low battery condition from the LR Sensor/Transmitter.
Possible Causes:
- EVIC Internal Fault
- Sensor/Transmitter Internal Fault
Testing
- Retrain the EVIC with the scan tool, record and erase DTC's. Drive the vehicle for 10 minutes at 20 MPH (32 KM/H). With the scan tool, read DTC's. If the scan tool displays a sensor failure or sensor low battery message, replace the indicated Tire Pressure Sensor/Transmitter. See TIRE PRESSURE MONITOR SYSTEMS - 300M article. If no, go to next step.
- Turn ignition ON. Observe the EVIC display. If the EVIC displays SERVICE TIRE PRESS. SYSTEM, replace the EVIC. See TIRE PRESSURE MONITOR SYSTEMS - 300M article. If no, test is complete.
Use the Manual With the Right Hardware
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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.
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