Newbie question...

[misteriley]

amongst other little issues, I have the dreaded 'suspension inactive' warning..

I have the 1.4 laptop scanner and when I scanned it it did mention something about
Ride height
rear left sensor
And body komfort module..

So after reading online people have said check the fuse, sensors, relay etc..I know it could well be the sensor ..but should my suspension do 'anything' people talk about it going up and down or sagging, the ride is sat perfectly fine thank god, and the seller said he thought it was after the owner changed the brakes and jacked one side up a time??

What repair routine do you suggest...)
Cheers