Having a weird one with my headlights next to the dash illumination dimmer is a switch with 0 , 1 , 2 , 3 on which adjusts headlight height when i switch this to any position other than 0 the headlights flicker over bumps and the driver side headlight does not move any ideas?

thanx in advance

very technical i know but hey

another issue on the climate using the code 49 trick my temp is never above 83 is this a sign of new temp sender required also the temp needle moves a lot but never above 90 around town but on motorway sticks on 90 ?

thanx people