The 2006 RL headslights are horrible. On low beam there is like a curtain that comes down and you can only barely see the road, and you cannot see anything above the hood of the car! Many people have blogged about this...is there a fix? It is dangerous to drive at night. I have to have my high beams on all the time to see street signs, deer on the side of the road, people walking, etc. The only time it is ok on low beams is when the road has a slight INCLINE. But a dip in the road or windy road or decline and you are screwed!

check for bad grounds for the low beam relays

Could be the dimmer switch. Are you loosing both high and low beam when it happens ?

does that car have ground lights or fog lights it may not be your high beams coming on it may be your regular lights do you manually turn your high beams on or do they come on on there own

I'm having the same issue. I have changed the bulbs and fuses. I can't find a relay but I don't think that is the issue. Some other people have suggest the Dimmer Control Switch. I am working on that. Please let me know what you find out.

Well I would certainly check the fuse because that both lights burned out. If only one had burned out I would replace the bulb. If the fuse is good I would purchase 1 bulb and see if the new bulb works. Often times people will replace both bulbs because they come in 2 packs cheaper than singles. This also can cause both to burn out at the same time. Check the fuse and then replace a light, if replacing one light works replace the other, this should cure the problem.

theres a chance both of the low beam bulbs went out pretty close to the same time. if you have a test light check to see if you have power at the bulb connector with the lights turnd on

There are two seperate headlight modes on a vehicle.
The "high" beam mode is for driving were you have no on coming traffic. You will be able to see further down the road and the lights appear brighter.
The "low" beam function is meant for on coming traffic and certain weather conditions such as the presence of fog, rain or snow. The low beams will point slightly down and to the right so as not to "light blind" an on coming driver and allows you to see the edge of the road.
Good luck on your road test, drive carfully.
Regards,

Replace the headlamp switch assembly

I would think ur low beams are burnt (the bulbs) because that dim light u see should be the daytime running lights, which are usually less bright that the lights turned on.
Verify ur fuses as well for the low beams.
Check on that for now and get back to me if u have questions.

i would try replacing headlight switch....