We have a 2011 Limited with 24,000 miles on it. Use the truck in a very "typical" fashion, i.e. drive to and from work, drop kids off at day care on the way, so probably 4 open/close cycles.
About a month or two ago the battery on my smartkey was low, so I replaced it.
Today it is reading low again....???
At night the vehicle is parked in a garage, and the key is stored inside, probably at least 40 feet away behind drywall, steel door, etc.
Our other car is a 2012 VW GTI which does not have a smartkey.
My key ring has the Toyota Smartkey, VW key and two HID Prox key fobs (those grey electronic "keys" that are used to open doors, etc).
I wonder if these HID Prox keys could be causing the battery drain issue, it is my understanding they work on a similar perhaps related technology. They do not have batteries in them, they pick up current from another source...ie when you place them close to the electronic sensor lock I guess they pick up current and send a code and unlock (I'm guessing here a bit).
The HID keys could be a total red herring too....any ideas before I take into dealer?
It seems pretty crazy that I have to replace the battery twice already in a 2011....maybe its a fluke that I got a bad battery?
Does dealer try to troubleshoot or just replace the keyfob? (I'm under factory warranty)