Ford can void your warranty for any modification, its up to you to prove them wrong. For instance my car was running fine, I took my car in for an oil cange and told them NOT to rotate the tires. They did and I had some funky wheel vibrations, etc. I took it in and just asked them to fix what they broke. Blamed it on my lowering springs and oversized exhaust....in the end I was told not to come back to the dealership....they tried charging me $60 diagnosis to tell me I had lowering springs and and exhaust that caused my problem that I didn't have before they touched the car....things got out of control quickly from that point...
Whatever you have a problem with, if theres something aftermarket attached to it your warranty is void. Unless you got a dealership thats reasonable....but there isn't may of those!
Whatever you have a problem with, if theres something aftermarket attached to it your warranty is void. Unless you got a dealership thats reasonable....but there isn't may of those!