hey everyone new here i have a 2004 and i replaced the hid bulbs about a year ago and recently the right side has been givingme problems some time it will turn on and sometimes it wont. the left side works but every so often it wont come on im kinda stumped here dont know if its a bad ballast causingthis or a bad contral module. im not sure if im the only one with this prblem ive searched and have came up empty any help would be much appreciated thanks

 

It would be better to check the relays with a voltmeter. They should have 12 volts.

 

You can swap bulbs side to side. If the same side has issues, the bulbs are still fine and I'd suspect the ballast needs replacement.