Toyota Camry Problems

I would suggest you ask the dealer to engage a pest controller to rid the car of the ants. That shouldn't be a big problem. More of an issue will be who is to pay for the job. Were the ants there when you picked up the car, or did they enter it after it left the dealer. Perhaps you could check around the dealership to see if there is any evidence of an ant infestation on the property.

It could be a mismatched gear set in the oil pump in the transmission, or a mismatch in the planetary gear set.

Final drive gear whine is something many owners complain about in Toyotas. It's usually a result of the gear cutting process and there is not much you can do about it, except replace the gears. You could try different gear oil, which might make it a little quieter.

It is likely to be a problem with the clear coat, but you need to consult a paint specialist to determine the exact cause of the problem. It's quite common with cars of that vintage. I'm not surprised that Toyota is refusing to come to the party; your car is eight years old. If you want, you could approach Toyota directly and request they help with the cost of repainting the spoiler, or you could save a lot of heartache and distress and get it repainted yourself.

We have seen other reports of the issue, which is apparently caused by an internal baffle in the manifold coming loose and vibrating. To save money you could try and find a secondhand manifold.

You are assuming the blown head gasket is related to the previous cooling system failure, but you don't know that to be the case. Until you know the cause of the problem you can't mount a case against Toyota. Once you have established the cause of the head gasket failure you can then decide on whether it's best to approach Toyota.

You're clearly not getting anywhere with this dealer, so I would seek advice from a specialist in automatic transmissions on the problem and, depending on that advice, take the information back to the dealer and demand it be fixed. Our information is that it's unlikely to be a converter problem.