Don't be fooled -The car manufacturer or dealer may claim that you are causing the defect. This is a common tactic when the car dealership cannot fix the auto or the auto manufacturer has no way to repair the car's defective condition and wants to avoid a refund. Your problem may be common.  Ask about the Technical Service Bulletins and check national records for similar defects. Your situation may not be as unique as the automobile manufacturer represents.

To obtain a car history on your auto, go to Carfax
To obtain your car's value go to kbb.com .

To find out if technical repair bulletins or recall have been issued for your vehicle, go to nhtsa.gov .

Why negotiate a car warranty claim yourself for free when you can have an attorney do it for you at little or no cost?  Never negotiate your own lemon auto case.  The manufacturer will rarely pay you fully unless you are represented by a lawyer.