winstonbike,
yes...this is somewhat a common problem with those housings....but the problem has to do with the turn signal socket...and not the housing.
Expensive option (not really needed):
You can certainly buy a new xenon/HID housing for about $600 from the dealer. For your car, used replacements are extremely hard to find. I think shokan.com has a 4.2 in inventory...so you could get the housing for close to $300. Not sure.
http://www.shokan.com/viewcar.php?id=185
Simple option:
The other thing you can do is get a new turn signal socket. I actually have a few of these as spare parts. I have taken these housings apart a few times...and am very familiar with how they are set up. 99% of the time, it is the three-pronged turn signal socket. Getting to that turn signal socket will require you to jack up the LF end, angle the wheel to the left and remove the wheelwell housing (black plastic part). From there, you can reach your hand up and replace the socket. Very simple.
Drop me an email and we can chat offline.
-ted
teddybgame@hotmail.com