Suspension, so you'd be lifting from the body of the car instead of the tires in order to access the components (and surely remove the wheels), right? Then how in the world would something like this happen? Need more details.
You don't need to read anything to know you don't tell your car to move by itself if you can't see it, with current Summon. With the new Advanced Summon, you would not need to see the vehicle because it would have move protections in place. But you still wouldn't Advanced Summon the car if you don't even know where it is (e.g. still on the lift or not)...unless you're a moron.
It's still _extremely stupid_ on the part of the customer (if it really happened). No smart person would begin Summon if they can't even see the car. And if they _could_ see the car _on the lift_ and still began Summon, then they're they dumbest person in the world.