that they both work. check every door and all the locks. turn on the radio, stereo or any other entertainment system that may be in place. make sure the dash lights are all in place and that none of them are blinking. generally go over every inch, jiggling stuff around and get a feel for anything that might be missing, damaged or not working.
the last thing is the test drive. it would be good if you are able to get a cold start and listen hard for any rattling. while driving be very aware of any strange smells, sounds or feelings. make sure that the brake does not hit the 