Warning Light On problems of the 2009 Volkswagen Tiguan

2009 Tiguan 2. 0 tsi all wheel drive in 2012 I discovered some wetness in the Tiguan floor mat. (less then 3 years old car) I took it to vw dealership, they found a malfunction of the roof drain hose. The estimate was so high $700 that I figure well, I can live with a little wetness when it rains hard. 2012 to 2015 the car was at pizza ardmore vw several times (the same dealership) due to an ongoing red and orange warning lights on the dashboard. "check engine"�including malfunction of the airbag. In may 2015 the engine completely stopped running. "you need a new engine" I was told, without providing me with any explanation in spite of my request. How come 25,000 mile engine brakes? nearly $8,000 for a new engine on a six year old Tiguan. Two year later, the car stopped running again, the engine will not start, all electric are shot, no radio, no light, no airbags, no power, all gone. Back to piazza ardmore vw,� the car was then declared total loss, it was too expensive to fix. It all happened for two reasons. The vw manufacturer production defect of the drain hose. And lousy piazza vw dealership neglected to detect and fix the problem twice before it was declared a total loss. �.