Dear all, I have a brand new model S. My garage being underground with a poor cellular level, I have set up a TP-Link CPL Wifi access point in the garage, in order to have a good connection to the app when the car is there. The wifi It works flawlessly with phones & an iPad, all bars are there, as it should for an access point located inside the room. But, the car barely catches any signal. I managed to connect once, and it lasted barely one minute. Most of the time don't even see the network name listed. Do I have a faulty antenna that I should ask for repair? Thanks!