VW Sharan TPMS Warning Stays On Despite Good Pressure

Having dealt with a similar TPMS issue on my 2006 VW Touran diesel, I can share my experience as someone with moderate car maintenance knowledge. The constant tire pressure warning despite correct inflation levels pointed to a faulty TPMS sensor. After checking tire pressure multiple times with a reliable pressure gauge and confirming proper inflation, the warning persisted just like in your case. My workshop diagnosed the problem as depleted sensor batteries, which is common in vehicles of this age. The TPMS sensors contain small batteries that typically last 5-8 years. When they die, the system shows persistent warnings even with proper tire pressure. The fix involved replacing the sensor units. Total cost was 280€ including diagnostic work and programming the new sensors to the vehicle system. To help further with your specific case: Which TPMS system does your Sharan use (direct or indirect)? Have you had any tire work done recently? Does the warning come on while driving or only at startup? Are you getting the warning for specific wheels or a general system fault? This information would help determine if you are facing the same sensor battery issue or potentially something else with the TPMS system.

Thanks for sharing your detailed experience. In my case the warning light comes on immediately after starting the engine and stays on constantly. No specific wheel is indicated, just a general system fault message. Last service was 2 months ago and included a full tire check with proper air pressure verification, but the sensor fault persists. The tire pressure monitoring seems to use a direct TPMS system based on what I found in the manual. Have not had any recent tire work done besides regular pressure checks. The constant warning is concerning since it prevents detecting actual flat tire situations. Based on your experience with sensor batteries, this sounds like the most likely cause. Will have the workshop check the TPMS sensors during the upcoming service at 140000km.

Thanks for those added details about your Sharan TPMS issue. Your symptoms match exactly what I experienced with my Touran, especially the constant warning right from startup and the general system fault instead of specific wheel warnings. The fact that your tire pressure warning persisted after a proper service check really points to sensor battery failure. These direct TPMS systems are reliable but the sensor batteries inevitably fail around the 140000km mark, which aligns with your situation. Quick tip from my experience: when you get the sensors replaced, make sure they update the system software too. My first repair only included new sensors, but the issue returned until they also refreshed the TPMS module programming. For reference, my sensor replacement costs stayed around 280€, but prices for parts can vary. The repair eliminated the false warnings completely and restored proper low tire detection function. Consider requesting a full TPMS diagnostic scan before parts replacement. Sometimes the system just needs a proper reset, though in our generation VWs with direct TPMS, aging sensors are usually the root cause of persistent air valve monitoring faults.

Thanks for that comprehensive explanation on TPMS diagnostics and repair. You confirmed my suspicion about the sensor batteries being the likely culprit. Good to know about the potential need for system software updates along with new sensors, will definitely mention this to my workshop. The pricing info helps with budgeting for the upcoming service. Given the similar age and mileage of our vehicles, it makes sense that my TPMS sensors would be reaching end of life now too. Better to address it properly than keep driving with a non-functional tire pressure monitoring system. Will schedule the diagnostic scan and sensor replacement soon. The constant warning light is getting more annoying by the day, and I want to restore proper low tire detection functionality. Really helpful to hear from someone who resolved the exact same issue successfully on a similar vehicle.