Santa Fe 2.7 2001 Light motors
 

Hi everyone, just had a pair of new headlights fitted as the old ones had dimmed somewhat due to the reflectors age. All working fine bright lights, but now I have the ajuster motors comming on intermittantly. I noticed when sitting in the car staitionary, the lights raise and lower very slightly and you can hear the motors. I have seen in the forums that other cars have had the same problem. Any idea of the cause or a fix for the problem.
Thanks in advance.