I took the car in because it had a coolant leak. The leak was found and repaired. The residue of coolant was left on the engine so I had to deal with the smell of hot coolant until it was evaporated by the engine heat.
While working on that the mechanic found a leak in the oil pan gasket. The gasket was repaired but the oil pan drain plug was not tightened so it leaked oil in my carport. When I looked under the car to find the source of the oil I found and tightened the loose drain plug. I looked around the oil pan to check for more leaks and found another loose bolt. This bolt was removed because it attaches to a bracket that is held on with the oil pan bolts. The bolt that was loose was only threaded in a few threads and it held the lower portion of the air conditioning compressor to the bracket. I tightened that bolt as well.
The air conditioning on the car had also stopped working. I was told by the dealership that the air conditioning system may not be covered by the extended warranty and that the diagnostic for it would cost $175. If a covered problem was found then the charge would be covered with the warranty otherwise I would have to pay the $175. Any problem with the air conditioning system should be covered under the warranty, so I am not sure how I would need to pay the diagnostic fee. I had to defer the diagnostic of the air conditioning until I have the money. I did hook up the gauge I have to recharge the air conditioning coolant and it reports that the system is overcharged. This means that the dealership did look at the system some, and may have overcharged it. I realize that the cheap little gauge I have is not a professional tool, but it does raise questions.