I purchased a 2010 GL450 and I've had trouble with it from day one.

What is your question?

First it was the broken blinker, then I got nails in 3 of my run right tires, my tire gauge light is NEVER dependable, my coolant light comes on and off for no reason, and now there is an awful smell coming from the air conditioner.....the dealership has very poor customer servive. I feel like I should have some options here. Can anyone let me know what to do?