Problems, but not my Mazda... I need your help

[Terrible3]

My Moms 2008 Hyundai santa fe had its oil change two weeks ago from the dealer. She noticed an burning oil smell over the past week and did not think anything of it. This week I came home for the first time and figured I better look into it. Basically I opened the hood and everything was covered in oil and right away I noticed that they had not put the oil filler cap back on when they serviced it at the dealer. What I need to know is what possible damage could have been done over the past two weeks it was off. I am going to call the dealer tomorrow to give them hell over it and I need to know exactly needs to be done to fix the car.

Note: Before anyone asks why was it not checked before, I don't see or drive this car ever (I have not been home) so I never got to take a look at it. Hyundai cant expect my mom to be checking under her hood for problems just two weeks after a full $230 dollar service.

[Scottobot]

I can't tell you what kind of damage may have been done, but would this have been the Brampton dealership by any chance?

[sas]

I don’t know much about Hyunday. I think there is the oil pressure sensor.
If you hadn’t the engine light there was oil in the system.
Thru cap, you could to see the camshaft and a couple of lobes.
Look, are they lubricated and are there scratches on them or traces of overheating.
Check the color of the remaining oil. They should to make
note about their fault. No one knows what will be in the future.

[KenYork]

I'd call the dealership tell them the situation and feel it's not safe to drive the vehicle to get it fixed. Ask them either to send out a technician with oil and oil cap, or tow the car. Be wary about giving the dealership hell, it will reflect the service you'll recieve to solve the situation.

[kaval]

As long as there was enough oil (between max and min) the engine should be okay. If the oil light went on, there is a good chance that the life of the engine has been reduced and more prone to spinning a bearing or something.

[Terrible3]

I was also surprised that there was no engine light as visibly the engine had lost a fair amount of oil. The engine oil is already on the dark side after just two weeks of driving. I use the word "hell" in the wrong context. I realize yelling at someone gets you nowhere. I just want to make it clear to them that its not acceptable to leave oil caps off after an oil change. I am pretty sure there is a rule (or just common sense) to give the car a complete check before you close the hood. Leaving the cap off is just careless. I just wanted to know what possible damage may be possible running a car in the winter with no cap.

I figured I would have them come out pick the car up and leave us with a temp car. The car needs a full oil change, new hood heat insulation, and an engine bay clean ( my best guess).This is not the first time we have had problems with their service department. The car already had a faulty starter (after just 6 months) and when returned to us for whatever reason the cars computer did not find our extra keys valid. They told us it was since the ecu did not know our extra keys anymore after it was reset and so our car had to be towed in for a second time. We got the car back after a week and all the keys worked but now our climate control and temperature display were all displaying the temperatures in F and not C. How is that they took the car in the first time and did not bother to think to reprogram the ECU to recognize our extra keys when they knew it was needed? Its Hyundai in Richmond hill if anyone is wondering.

PS: Thanks guys for your help, I know a LOT about how cars work, but little about the damage that can be caused from treating them improperly.