Sign keeps coming up to check tyre pressure. But tyres ok

This tpms system is based on the rolling circumference of the wheel.
please check the tyres are all the same size(check the trye wall) and an over worn tyre can give a false flat tyre.
that would be the easy fix.fingers crossed.

the tyre pressure will be on a decal on the edge of the door ,door opening or door pillar
it will show the required tyre size, pressure for both laden and unladen rated speed of the tyres in use
contact a toyota service centre and ask the attendant

Get the pressure sensors checked. Does it show you which tyre? If so you could swop it with 1 from a tyre which doesn't show a fault and see if the issue moves with it. If it doesn't move, then is coud be a cabling issue, caught white, short or similar.

Had the same problem with my 2006 passat, there is a tyre pressure button on the lower central console on the drivers side of the gearstick, make sure your tyres are at the correct pressure first, then with the engine running press in this button and hold it in for about 10 seconds, this will reset the tyre pressure warning to the pressure that is currently in the tyres

Tyre pressure warning light
Check pressures
When correct,turn ignition on and use lever on top of indicator stalk to scrool untill you see tyre pressure reset
Press end of stalk to reset

use 10W30W, that is the heaviest oil this engine needs, thicker oils can damage the bearings due to oil starvation, as far as tire pressure goes 30- 32 PSI is best for this little car.

This is probably the run flat tyre sensor telling you that one of the tyres is down. Check the pressure on all 4 tyres, and get them all to the proper pressure. The button under the handbrake is a reset button for the run flat tyre sensor. With the engine off, hold the button in and keep it held in, start the car up, keep the button in until the light goes off. If it doesnt go off, just wait 10 or 15 seconds, then let go of the button. The warning light should go out. If this happens again, check your tyres again as you may have a puncture that you don't know about.

if yellow this is most likely your tyre inflation indicator warning.
this means that one or more of your tyres has defated or inflated outside expected limits (do not worry)
1. check your tyre pressures are correct.
2. switch on the engine and let light come on.
3. press and hold the reset button with the same horseshoe icon which is situated near your gear lever in the middle console after several seconds the light should go and and your tyre pressure warning system is reset and ready for any change in prssure. if this does not work consult your nearest certified VW dealer they will be happy to assist.

This will only come on when a tyre has dropped in pressure (not spare). It work on the principle that a tyre with less air has a smaller rolling circumference and therefore a different wheel speed. This is then monitored against other signals from other wheels and determined that a loss in pressure has occured.

If all tyre pressures seem ok, there could be a chance of a small unoticeable leak and would require a bath test. This is when the tyre is dipped in water and bubbles would appear where the puncture is.

Ultimately the system may just need to be reset, or has incorrectly been reset from a tyre change. For this you just press and hold the TPC button (located on the centre console above the gearstick - looks like a flat tyre with an exclamation) turn on the ignition to position 2 and the light will come on re then yellow,go out, come back on yellow. When it comes back on yellow it re-initializing the system. You can let go of the button and after 20 odd seconds the light will go out for the final time, completing the reset.

If the light continues to come on after the reset then you definitely have a puncture somewhere!

Hope this helps!