NHTSA Complaint #11618880 — 2022 VOLVO S60

The indirect measurement TPMS system of this car has misdetected low tire pressure on three occasions. Most recently, on October 3 while driving on the freeway at about 70 MPH the TPMS alert illuminated. I checked the information screen and the display showed low pressure in all four tires. Because I have had misdetection of the right front tire twice before, and that it seemed very unlikely that all four tires would deflate at the same time, I disregarded the alert as a false detection. Later I checked the air pressure in all four tires and found it to be exactly correct. In an earlier episode, as I mentioned the TPMS alerted that the right front tire was low. In this instance, I did not have a history of false detections, so I believed the information to be accurate and immediately exited the freeway and returned home where I had a (very accurate) tire pressure gauge. Of course, the pressure was correct in all tires. I then followed the Volvo recalibration procedure and this completed successfully until later that day when the same tire alerted to low pressure again. I rechecked, again pressure was correct, and re-ran the calibration procedure. I did not have any other false detection again until about a year later when the October 3 incident occurred. The car has had at least one “total system update” to the software to address other issues since the first false detection incident, possibly two (not sure). The problem I am having with this is that Volvo apparently decided to change from direct sensor measurement to indirect wheel speed measurement around 2019 or 2020 as a cost saving measure. That is fine, but the indirect measurement system they are using is causing so many false alarms that now the first thing I think when I see an alert is that it is not a real problem. This is not a good situation. Volvo forums are full of complaints by other owners of similar false alarms. Volvo should fix this problem through software or restore direct measurement.