Instantaneous. It remembers all the speed bump area on the side streets too. I had enabled on some of the major arteries and where they had construction for more than a year and a huge traffic bumps and steel blades. It would work perfectly without any issues. Another place to enable will be some of the supercharger places that are sloped. Best part of MS. This way even if it slopes down no rashes to the car. SInce I had those 21" wheels i had to be careful entering certain driveways with close curbs.How long does it take for the height to adjust?