One problem related to radiator has been reported for the 2012 Volkswagen Tiguan. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Volkswagen Tiguan based on all problems reported for the 2012 Tiguan.
Gradual coolant leak with dealership knowledge upon sale of the car (44,000 miles). Refill overflow every 8 to 10 months. Leak unknown. Had to increase refilling gradually over time, thought it was due to use from work in 2016. Increased to once every few months 2017. Fill every week or two from 2018 to 2019. . . . Daily since late 2019 to now. Engine does not over heat. Refilling over flow coolant tank every time I need to drive the car. I have to turn on the car, pop the hood, and see how much it goes below the minimum line. Then fill to maximum. Daily refill started around October 2019. Received transmission flush and fuel induction service. Mechanic said I need a water pump and radiator. He thought the recall would cover my car but said my VIN wasn't showing a defect. I'm not sure why it's not. Dealership knew about the leak upon the sale of the car. Help!! I had no idea the leak was going to get worse. The dealership made it sound like something minor I just had to deal with.