Original post by: cschnettler ,
You should go to Apple store and ask them to diagnose. Then they should replace it for a new one and you probably would have to pay a part. As far as i know there is no taptic engine part available to replace. I recently had the same problem in my country and I had to pay something like 380USD, but I got a new 7+ 128Gb. PD: On the diagnose they told me the water pass trough the home button.