Take a walk towards BOTTOM of screen. Maybe it's possible to reach your destination moving blindly towards ARM base but it would take looong walk to get there. After three screens or so our heroes should see a maglev char. Get into it. Now you have to drive forward (towards the ARM base, remember?) until red light at control panel climbs to the top. Stop the car exactly when red light switches over from left column to right. If you miss stopping point a little you can walk, but don't miss it too much. Use reverse movement as necessary to adjust your position. First elevator is a red herring - you have to move out towards the second one. Back to the car and off we go until red light climbs to top second time. Check comscanner if unsure. If all goes well you'll arrive et the correct elevator.