Since owning my 2017 Mazda 3 -- I've had the TPMS light come on a total of four times in four months, three of which were false alarms, one of which was genuine. I regularly check my tyre pressures at least once a week, and as per the manual, I hit the TPMS light any time I do inflate my tyres which re-calibrates the system.
I run Michelin PS5's all round, and they have been fitted a few months back.
Sunday just gone, 25 mins down a longish A-Road the light came on, checked my pressures with a digital gauge and they were all spot on, no leak at all. I reset the light, drove home and no light came on
This morning, before setting off, I checked my tyres ( pre-motorway checks ) and they were all the right pressure. Again, 25 mins down the motorway, light comes on. I get to my destination, and again, check my pressures - all was fine. Reset the light, drove home, and no light came on.
It is an " Indirect " TPMS system which does not use any special valve, but just uses the ABS sensor ( from what I know ) My only thought is that the tyres are heating up fast, and then throwing something off and causing a TPMS light.
What is the best course of action ? Tyre place, Independent Garage, or Mazda ( I am under warranty but their diagnostic fees are ridiculous ) Ideally I want it sorted because I don't want it to come on one time, ignore it and think it's a hoax, but then realise I actually do have a puncture