Had the dealer install mine when I bought my '06. I still love them as do my wife and other passengers. They still work great, 99.9% of the time. Over the 12 years, I've had several isolated instances where the pass. side step failed to deploy. Each time it's been very hot, in the 100's. Because it's so inconsistent I haven't been able diagnose it. I also learned that they get very slick when iced over in freezing rain.