General: Resetting Tyre Pressure - how long?

[Dave Stewart]

Had two new tyres fitted. I then saw the car status message and followed how to rest for the new tyre pressures. I drive away and 10 miles later its still not updated with the new pressures. I've done the whole thing a couple of times - anyone have any idea how long it takes the computer to accept and update for the new pressures? Its a simple process to follow which I am doing but not sure why the car is taking so long here?

[Sergeant Grumpy]

If your car is AAOS (as mine is), check the pressures are correct and then store them….
Takes longer than 10 minutes as I waited whilst the car was stationary, and even when driving after this, it was still storing the pressures quite some time later.
It will eventually store, but does take some time on AAOS - we’ll, it does on mine anyway (2022 V90).

[Sotosound]

Originally Posted by Sergeant Grumpy

If your car is AAOS (as mine is), check the pressures are correct and then store them….
Takes longer than 10 minutes as I waited whilst the car was stationary, and even when driving after this, it was still storing the pressures quite some time later.
It will eventually store, but does take some time on AAOS - we’ll, it does on mine anyway (2022 V90).

By AAOS, do you mean that the system looks for changes in rotational speed of the wheels rather than for actual changes in tyre pressure?

[deepsix]

It can take approx 20miles. It doesn't register the pressures, rather the rolling circumference while all tyres are correctly inflated I think. (V90cc Sensus system)

[Sotosound]

Originally Posted by deepsix

It can take approx 20miles. It doesn't register the pressures, rather the rolling circumference while all tyres are correctly inflated I think. (V90cc Sensus system)

It measures rotational velocity and works on the basis that a change in rotational velocity is caused by a change in circumference of the wheel which, in turn, is caused by a change in tyre pressure.

In my experience, this has worked when I've had a puncture but, far more often, it's told me that one tyre is low on pressure or it's told me that all tyres are low in pressure when, in fact, they're all fine.

Normally, it gives me a false warning when I'm on a time-critical journey.

Probably some bug-y software.