Headlight problem

  • Hi, I have a 2002 W210 E320 wagon.
  • My headlights all work and the bulbs were replaced in both high beam lights.
  • All fuses were checked and found okay. 
  • My problem is the RH high beam light stays on when light switch is turned on, the LH high beam stays off until the lever arm is switched to high beam.
  • There are 2 control modules but I am not sure if this is where the problem is.