One problem related to o2 sensor has been reported for the 2009 Volkswagen Tiguan. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Volkswagen Tiguan based on all problems reported for the 2009 Tiguan.
For the 2nd time in less than a year, we had a front headlight go out, the bulb wasn't bad but the fuse was. The first time the fuse was blown and looked like it had slightly been melted. The most recent time this happened on 10/19/13 the fuse was almost totally melted and also slightly damaged the fuse next to it. This is a 2009 model and we've already had to replace the O2 sensor, accelerator coil and now two fuses for the headlights.