Persistent Low Tire Pressure Alert in 2019 Volvo V40 Diesel: Potential Tire Pressure Monitoring System Error?

Hey, I had a similar problem on my 2016 Volvo V60 a year or so back. Strikingly alike! Despite having correct tire pressure, I had the "low pressure" warning light always popping up annoyingly, so totally get your issue. Turned out for me that the Tire Pressure Monitoring System (TPMS) antennas were faulty, so the system was giving bogus readings. Was a serious issue, as you can't ignore tire pressure warnings but chasing ghost pressure decreases is just as nerve-wracking. Had to take it to the garage and they diagnosed it pretty quick. They did recommend replacing the antennas, it's a job that needs specialized equipment and knowledge that, as a layman, we generally don't have. It did fix the problem for me, no more ghost warnings after that. In terms of severity, yeah you could say this is serious because you depend on the TPMS to let you know if you have a slow leak that could lead to a flat in the middle of nowhere. You'd rather have it working accurately than second guessing every warning. Hope this helps and you manage to sort it out soon. Cheers!

(Translated from German)

Hey there, Thanks for the heads up! I thought as much that the TPMS could be at fault here. Your experience definitely confirms that. Sigh, guess I'll have to get it to the garage after all. By the way, could you give me a ballpark figure of how much it cost you to replace the antennas on your V60? Also, hoping that you've had no further issues with the TPMS, right? Thanks again for the advice. Really appreciate it. Cheers!

(Translated from German)

Hey there, No worries, glad I could give a bit of guidance! Took my own V60 to the folks in the garage, and they sorted out the Tire Pressure Monitoring System (TPMS) for me. The defect was specifically with the antennas, just like in your case. As for the damage to my wallet, well, it wasn't exactly pocket change! The total went up to 255€. Not exactly a steal but worth it to get rid of that constant 'low pressure' notification. And let me tell you, since the repairs my TPMS has been running like clockwork. Haven't had the slightest problem with it. It was definitely money well spent, even if it was a little more than I would've liked at the time. Hope that helps! Get that V40 of yours sorted without any major hitches. Cheers!

(Translated from German)

Hey! Thanks so much for the prompt reply and the valuable info. Sounds like it comes down to shelling out some cash for sure peace of mind then. 255€... Well, it stings a bit, but I agree that ensuring the safety and functionality of the TPMS is priceless. Good to hear that your TPMS is running smoothly ever since. It gives me hope that once I replace the antennas, I'd also deal with this issue for good. Really appreciate the help and the shared experience. Feeling more confident to handle this. Will take my V40 to the garage asap. Cheers!

(Translated from German)