i have recently changed the NSF levelling valve on RR 05 and when i took it to get calibrated the guy said it was'nt getting correct voltage? when vechile is started it comes up as suspension fault but then levells out and goes off ,any ideas? Also just changed rear pads and warning light still on and check brake pad message, does the codes for this have to be reset ? Many thanks

If the brake pad sensor has previously caused the dash light to come on then a new sensor has to be fitted with the new pads.

The level sensors need calibrated, if the reading is not correct the fault will need to be traced, are you sure the electrical plug is pushed in home

1 of the tabs on the plug snapped off but i've put a cable tie around it and its def connected ok.