From plane to rental car there is no need to use an elevator.
There are escalators to take you from level 3 (de-planing) to level 2 (baggage claim) and then to level 1 (rental car counters).
Walk across the street to the garage where cars are located. Rental cars are located on levels 1 and 2 of the garage depending on company, there is an escalator to level 2.
When returning the car walk back across the street from garage to terminal and there is an escalator that goes from level 1 all the way to level 3.