Message center

The first step is to have the diagnostic fault codes read and recorded. Those will indicate the circuit or system that needs further diagnosis. The seller may be able to do that if they have a repair department.

Just to add to this one the parts stores only have a DIY scan tool that can read basic engine and transmission codes. It would take a more advanced professional scan tool. Also, depending on the codes that professional scan tool might be needed for the diagnosis and the repair. I would say max a hours labor to read the codes. Make sure you get the exact code numbers not code descriptions.

You are welcome.

Every used car dealer has a repair shop that does their work, including the required safety inspections for all the cars they sell. They can refer you to that shop. In this case there likely was something they overlooked or the dealer told them to not repair it. In most states the laws say certain things don't have to be repaired, but known defects have to be disclosed.

It is also possible for a problem to develop later while the vehicle is just sitting on the dealer's lot. Rust buildup on a toothed tone ring is a good example. They have no way of knowing that occurred, but most dealers are willing to look into it, especially if they want your repeat business. The secret is though you have to go back right away and tell them about the problem. If you wait a day or two, any number of things can happen in that time that they have no control over or responsibility for. It all depends on how much profit they made on the vehicle and how much of that they want to devote to taking care of problems. At the very least, it only takes a few minutes to read the codes. Most repair shops that did the inspection should be willing to do this for little or no charge as a customer-satisfaction issue.