Maybe someone can held me shed some light on the issue. Just to give a little back story. I brought my 2010 Tiguan new in July of 2010. Everything worked great, no issues. Then come the end of September 2011 I have a really bad coolant leak, bad enough for the coolant dash light to come on and beep. Got it towed to the dealership and it was my water pump. I was still under he 36,000 mile warranty so it was cover at no charge.
This past Thanksgiving week I noticed coolant leaking again and smelt it. It wasn't as bad this time to make the dash light come on. I took it to the dealership again and it was the back housing of the water pump and seals, yes the same one they replaced in September. The original only lasted 33K miles, this one lasted 4,500. They also replaced my radiator and throttle module.
Fast forward to yesterday, two weeks since it was replaced the second time and I think it's about to go bad again. I pulled into my garage yesterday and heard a constant high pitch whistle - http://www.youtube.com/watch?v=7HWS2YmsGjo
I crank it up this morning and run to the gas station and no sound. On my way back, after the engine has had time to get warm it starts again. I don't have any white smoke from the exhaust, it hasn't started leaking YET, however, the passenger side of the radiator has a burn like smile coming from it, no smoke under the hood though. You have to get close to smell it. There is no smell on the inside of the car, even running the heat. I'm going take it back in the morning on the way to work to see if they can give it a quick check over, but in the meantime I'm wondering if anyone else has experienced this or know of someone how has and what the issue was. If it's the water pump it will be the third one, 38K miles, second one in two and a half months.