Hi folks, got in car taking dog to park,noticed the ride height was flashing off and trying the switch it didn't do anything, no compressor noise, luckily the car has settled level, have tried the switch under dash and pressing makes no difference, searched for info and read a few posts but couldn't find an answer so will be taking car to garage so they can read ecu and try to trace fault had car for over 4 years and would like to get repaired so anything I can advise garage to check, thanks in advance