If you feel you have a legitimate claim against Lexus for actual damages caused you, then you should pursue it in court individually. I think class action lawsuits are way over utilized and are abused most of the time. This fishing for someone else to jump on the bandwagon with you does more harm than good to everyone.
A couple of years ago I received a notice about a class action suit for a toy product that I had purchased for my son. I disregarded it and went on my way. Several months if not a year or so later, I received an $8 coupon as my part of the award/settlement. The coupon was for further toy purchases from the same manufacturer that supposedly caused me damage. After reading the court documents, I found where the attorneys were paid millions in attorneys fees and all I got was a stinking coupon.
My conclusions:
I recieved a useless $8 coupon from a company that lost a lawsuit to me when I didn't even know I had been damaged and thanks to me, some fat a$$ed attorney, deposited a big pay check. In the end, I'm sure I will end of spending more than the $8 coupon on further purchases to cover this lawsuit. You tell me. Who wins?