Air Suspension Calibration

[Partridge]

could you also please explain what exactly this feature would help to do, maybe some use cases. Thanks!

In VIDA there is a suspension calibration routine that can be run to correct any imbalances.

how do I know if there is an imbalance? or how frequently this should be done? also when the car is started with "Easy Entry/Exit Control" enabled, then it feels like the car is rebalancing each time

Some people are using it to spoof the car into lowering itself.

in polestar mode through Orbit it lowers the car too, is going even lower safe?


XC90 B5(D) early 2023

In a car with air suspension, each air spring is adjustable by the car individually. In order to tell how high the car is, there is a sensor at each corner that reads the position of the suspension arm.

The sensors make sure that the car “knows” the position of the suspension at each corner. The car lowers and raises the suspension depending on the drive mode.

There is a calibration routine which will make sure the car knows what reading from a sensor corresponds to what height of the car. So that way the techs can correct the vehicle if one corner is too high or low.

We can feed the car slightly incorrect calibration data such that it thinks that it is higher off the ground than it actually is. If you tell the car that it is 1cm higher than reality, it will lower itself 1cm lower than it normally would.

So instead of using lowering links to mess with the sensors or using a piggyback control unit to modify the signals going to suspension module, we should be able to do it all in software.


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