Re: Does a lift void you warranty???
Penguin is right on the mark; if the vehicle was modified by the dealership before it was sold, then they are liable to honor the warranty despite the modification.
If an owner has the vehicle modified after he owns it, then the dealership may deny warranty coverage for anything that may go wrong that can be related to the modification. Unfortunately, alter the ride height of a vehicle can easily justify a dealership's denial of just about any part of the suspension. Shocks, springs, steering components, tie rods, u-joints, driveshafts and yokes etc... can easily be considered related and denied as a warranty item by any dealership.
My 4Runner has a slightly modified ride height, and I would surely return it back to stock before bringing it into the dealership for warranty work. The suspension in my 4Runner is an XREAS system, which has hydraulically cross linked shocks that are very expensive to replace, so I would not want to void the warranty on them!