Same here, second lexus GS300 for me MKIII from Sep 2005 with 130K : passengers outside mirror no movement when reversing, lexus offered to pay 50% of cost because out of warranty (i did not accept this find myself it is a hidden defect from the beginning , poor design).
Xenon HID same problems have started but on drivers side randomly my HID turns (cheap quality) off untill I switch OFF/ON/AUTO the lights again.
POOOOR quality this will be my last lexus.
Other is a 1998 MKII (with XENON HID that works flawlessly for 12 years now) with 250K on the road and only needed 3x battery and a new antenna this car is quality still drives like new. Next will be audi,bmw or mercedes!!!