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Answered 2015-07-15 21:03:35

I am assuming you are talking about the 'check engine' or 'service engine' light, right? Well, they can cut the light out by clearing your car's computer memory, but it came on for a reason in the first place. So, if they didn't fix the problem, guess what? You will get the light on again. I think they know this too. I would say the dealer would have to be pretty brave to NOT fix whatever the problem was. By retrieiving the trouble code on your vehicle's on board computer, they can easily go right to the system on your vehicle that is experiencing a problem. It's not like it is that hard to trouble shoot a vehicle with an on board computer since they have specially trained mechanics for your particular vehicle make. I would say you could trust their work if the light didn't come on after driving away and they could give you a detailed description of what the problem was. But as a consumer, remember you do have the right to ask and if they say they are going to or did replace a part, make sure you let them know you are going to want to see the old part or have them point out the new part to you when you pick up your vehicle.

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