I'm not sure on the 2011 dash but I suspect just the three screws on the dash and a few holding the underdash trim.
It helps if you move the steering wheel to it's lowest position and probably also remove the steering wheel.
Keep both doors fully open, sit in the car and have blankets to flip the dash onto (initially on to your lap).
Before you pull the dash out too far look at the configuration of cables etc,take lots of photos.
You can then start unplugging cables to remove the dash (labels should be put on the cables (helps if you mark the orientation even though they are keyed|) You can also mark parts with a sharpie to help on reassembly.
There are generic faults such as trapped cables, dodgy connectors, bad fuse connections etc that can cause a host of multiple problems. However I would suggest the best approach (before you take out the dash) is try to narrow down the possible cause of the fault.
If you list the faults with as much info as you have on TM I'm sure someone will have some good ideas as to the cause which may help you in tracking it down.
