I took my 2008 Lexus GX470 to Toyota to have the oil pan replaced. While leaving the service center I could hear popping and snapping noises; so I immediately returned to service department. As soon as I stopped the car, there was a loud explosion and a puff of smoke emitting from the rear tires. Then my truck dropped to the ground on its own. Apparently, the tech forgot to lower the shocks after replacing the oil pan. This caused my air bag to deploy. The dealership is paying for the rear shocks but is now telling my my front ball barring are leaking oil and need to be replaced. This is new to me!! The cost is $800 for parts plus labor. I am wondering if the front leaky ball barring is related to the shock explosion?