43 minutes ago, a7mag3ddon said:

If you really want to know if they are fitted go to a tyre place get them to break the bead on a wheel and physically look probably cost £10 for that or you can buy a 433mhz TPMS detector.

I ordered the grey TPMS tool (the one with a green button) which arrived this morning.

I was only able to pair the front left tyre. While it was asking to pair front right, I checked the rear tyres but they also didn't pair (hopefully there is no issue trying to pair rear tyres while it is asking for front right).

So this paints a clearer picture. Either the owner didn't want to replace 3 sensors or the garage disabled TPMS in IPC to prevent the fault. Nonetheless, time for new sensors.

3 hours ago, TomsFocus said:

That won't work I'm afraid. The sensors remain 'asleep' in storage to save the battery. They get woken up by the pressure inside a tyre.

That's a shame, I thought it was possible as this video shows pairing the TPMS sensor outside the tyre. Skip to 1:15.

You're welcome to try it. Maybe there is another way to wake the sensors that I'm not aware of.