Lyriq TPMS Sensor Malfunction: Fix Guide & Tips

As someone with some experience working on EVs, I dealt with a similar TPMS issue on my 2020 Cadillac ELR. After getting persistent low tire warnings despite proper tire inflation, I used a pressure gauge to verify all tires were at spec but the warning remained. The workshop diagnosed it as a failing TPMS sensor battery. These sensors typically last 5-8 years before needing replacement. The repair involved replacing the faulty sensor and recalibrating the TPMS system. Total cost was 280€ including parts and labor. The key signs that pointed to sensor battery failure: Accurate tire pressure readings with manual pressure gauge, Persistent TPMS warnings unrelated to actual tire inflation, Error codes stored in system memory To help diagnose your specific case, could you share: Which tire position is showing the error? Have you had any recent tire work done? Does the warning come and go or stay constant? What readings do you get with a manual pressure gauge? This information would help determine if youre dealing with similar sensor battery issues or potentially different TPMS problems that need attention.

Thanks for the detailed response. My Lyriq has 181585 KM and the TPMS issue occurs in the front right tire. Using a reliable pressure gauge shows correct air pressure at 2.4 bar, yet the warning persists. The message appears constantly rather than intermittently. No recent tire work has been done, and all readings from the manual pressure gauge match factory specs. Based on your experience, it does sound like a failing sensor might be the culprit. Will book an appointment to have the TPMS sensors checked and recalibrated.

Based on your symptoms and mileage, this definitely matches the sensor battery failure pattern I encountered. With 181585 KM, your Lyriq's original TPMS sensors are likely nearing the end of their service life, particularly in that front right position. When my ELR showed similar symptoms, constant warnings despite proper air pressure readings, replacing just the failing sensor resolved the TPMS issue completely. No need to replace all sensors unless others start failing. A quick tip before your appointment: document your manual tire pressure readings. This helps the workshop confirm the TPMS sensor is truly the problem and not an actual air valve or pressure-related concern. The repair should be straightforward: TPMS sensor replacement, System recalibration, Error memory clearing You might want to ask the workshop to check the remaining sensors battery levels while they have the TPMS diagnostic equipment connected. Could help predict if others are close to failing. The price I mentioned earlier (280€) is still fairly accurate for a single sensor replacement and programming, though costs can vary between service centers.

Thanks for that comprehensive information. After considering your response and comparing symptoms, I'm convinced my issue likely matches the sensor battery failure you experienced. The constant TPMS warning despite verified correct air pressure readings is a clear indicator. I called my usual workshop and booked an appointment for next week. They quoted roughly 300€ for the sensor replacement and recalibration, which aligns with your cost estimate. I took your advice and documented all my tire pressure readings, all showing proper inflation levels with my manual gauge. The front right continues showing the sensor fault while maintaining correct air pressure. Makes sense to have them check the other TPMS sensors while they have the diagnostic equipment hooked up. Given the high mileage, being proactive about potential sensor failures could save me another visit. Will update once the repair is complete in case others run into similar low tire pressure warnings or TPMS issues.