I had the same problem and the dealer replaced the headlamp for $300!!! When the other light was failing I did a litle research and found alternative bulbs that were more white than the original. I purchased 2 for 1/3 the price of the dealer bulbs and the dealer replaced them for me. Below is the details of the bulbs I bought. They have been in for approx. 6 mos. with no problem.
Item name: HID_D4S_D4R_D4C
Item description: Genuine Garax 6000K 8000K 10000K 12000K D4S or D4R Xenon Replacement HID Light Bulbs
www.iJDMTOY.com
Best of luck.
