Warranty

Kevin Ray

Member
Joined
Apr 23, 2022
Threads
3
Messages
10
Reaction score
13
Location
Louisiana
First Name
Kevin
Vehicle(s)
2017 Shelby GT 350
Will putting a tune in your car void the warranty?

 

Mike Pfeifer

Well-Known Member
Joined
Feb 4, 2021
Threads
7
Messages
571
Reaction score
534
Location
New Lenox, IL
First Name
Mike
Vehicle(s)
2019 Ruby Red Mustang GT A10
No. Only what the tune caused to fail would be voided. BUT, you may have an uphill battle if it gets blamed for something unrelated.
 

johnny1

Well-Known Member
Joined
Oct 30, 2016
Threads
8
Messages
766
Reaction score
360
Location
USA
Vehicle(s)
Had new a 16 GT350 and 17 GT350
They can now a days find you had a tune even if you remove it. And yes they can void the entire vehicle warranty not just the engine. And if you fight it you better have better paid lawyers than Ford has in order to win and that's gonna cost ya.
 

Skye

Well-Known Member
Joined
Jan 18, 2022
Threads
0
Messages
215
Reaction score
184
Location
Colorado
Vehicle(s)
2022 Mach 1 (Scheduled For Production 30 May 22)
With respect to the engine, computer systems, emission controls and exhaust, I would say yes. For the car in general, maybe. I feel it's going to depend on the area being considered for warranty, the dealer and your unique experience. Several threads/posts on this topic. Recommend perusing those and studying in detail.

*Edit: BTW, I see LA has emissions and vehicle inspections in some areas. I'd read up on that to.
 
Last edited:

TrackMustang

Well-Known Member
Joined
Nov 24, 2021
Threads
22
Messages
714
Reaction score
829
Location
SoCal
Vehicle(s)
2021 Mustang GT
In order to void the warranty they have to prove your tune caused the fail. If the tune runs too lean (or even just more lean than stock) they can say your tune causes engine damage. They can’t void warranty on something unrelated because of it. You could argue the warranty on the computer system that holds the tune could be voided easier than anything else.

Let’s be real. You didn’t buy a mustang for the warranty. Just do the tune and enjoy your car.
 

JimC

Well-Known Member
Joined
Apr 26, 2013
Threads
2
Messages
284
Reaction score
245
Location
Howell MI
First Name
Jim
Vehicle(s)
2019 EcoBoost performance package coupe
It's really simple. Ford warranties the car that Ford built. When you modify it (i.e. change the tune) it is no longer the car that Ford built. If Ford determines that your modification caused a problem then they will deny coverage for that repair.

As far as Ford proving it --- they send their determination that your modification is the cause. End of their proofs at that point and Ford doesn't need to do anything else. It is up to you to start the lawsuit, hire your experts, and present your evidence that Ford's determination is wrong. At that point, assuming you put forth sufficient evidence to avoid a motion to dismiss, Ford has to bring forward more evidence.

If you changed the stereo to an aftermarket one, would you expect Ford to honor the warranty on the audio system?
 

 
Hyperformance Glass Products (HGP)
Top