HVAC controls

What is your question?

What do the EC and REST buttons do, on the climate controls (CCU). Also, where is my cabin air filter, and how do I replace the one that is in it. I NEED a manual, any leads? Thanks!!! Answered some of my own question: EC is for economical mode while using air conditioning, turns off the compressor. REST is used during heater season. Turn-off the engine, press REST, and heat from the engine area will come into the cabin area, for 30 minutes. Like while getting gas, and it is blowing cold outside; turn engine off, press REST, go out and start the refueling process, get back into the car, end the refueling process, then pay for the gas, and go! Works for going to the liquor store, or waiting for you mother-in-law to buy thread that matches some fabric . . .