BMW 5 Series TPMS Sensor Mystery: Warning Persists

Had the same issue on my 2012 BMW 3 Series Diesel last month. The tire pressure monitoring system (TPMS) was showing unusual warnings. After checking with my diagnostic tool, it turned out the sensor batteries were dead. These batteries typically last 5-7 years, so it wasn't unexpected. Got it fixed at the garage, they had to replace all four TPMS sensors. Not a serious mechanical issue, just regular maintenance stuff. The job took about an hour, and they also reprogrammed the new sensors to sync with the car's computer. While they were at it, they found one sensor was actually damaged, not just dead. If you're getting error codes, it's worth getting it checked soon. These sensors help monitor tire pressure which is important for safety and fuel efficiency. Better to address it now than wait for more problems to develop.

Thanks for sharing your experience! I had almost the exact same issue with my TPMS sensors earlier this year. Can't remember if you mentioned the cost, how much did you end up paying for the full sensor replacement? Also, has everything been working fine since the fix, or have you noticed any other quirks popping up? Just wondering if I should expect any related issues down the line.

Hey again! Glad to help follow up on this. Yeah, I got the TPMS issue sorted at the garage, cost me 280 € to fix the faulty sensor battery. Much cheaper than I initially feared! The mechanic told me the main problem was just a dead battery in one of the sensors, so they didn't need to replace all four like I first thought they might. Everything's been working perfectly since the fix, no more unusual warning lights or error messages on the dashboard. It's such a relief not having those annoying alerts popping up anymore! The car's running just like it should now. Haven't noticed any other quirks or related issues at all. From what the mechanic told me, once these sensors are fixed properly, they usually stay problem-free for several years. Just keep an eye on your tire pressure like normal and you should be good to go. These BMWs are pretty solid once you sort out these little electronic niggles!

Thanks for the great info! I bit the bullet and took my car to a mechanic yesterday. Turns out you were spot on, it was just a faulty sensor. The mechanic found that two sensors needed replacement, and the whole thing cost me 320 €. A bit more than what you paid, but still better than I expected. The funny part was when the mechanic started working on it. He actually dropped one of the old sensors, and it literally fell apart in his hands! Guess it was definitely time for a replacement. The whole job only took about 45 minutes, and they even threw in a free diagnostic check. The dashboard's finally clear of those annoying warning lights, and the car's running perfectly now. Such a relief! Honestly, I was worried it might be something more serious, so I'm pretty happy with how it turned out. Really glad I didn't put it off any longer. Thanks again for pushing me in the right direction!