At this point, ask to start the car.

If the vehicle is a diesel don't forget you'll have to let the glow plugs cycle before starting the engine.

Turn the key to the run/glow position, just left of the start position, and let the glow plugs cycle. The glow plug light should turn on. Depending on the type of plugs as well as the outside temperature the light should stay on anywhere from 5 to 30 seconds or so.

Check that the other warning lights come on at this time.

Check to see that the gas gauge moves up from Empty to the current level.

Start the car once the glow light goes out. Unless it's unusually cold the car should start quickly on the first crank.