Escort tell-tale Question

Hello. I noticed that when I turn on the ignition on my Escort, the indicator light for the airbag and the oil control light will not light up! With me only the indicator light for the battery and for ABS will light up. (going out later) My Escort is year 97. So my grandmother also drives an Escort and with it lights up again the indicator lights for Airbag, ABS, battery and ÖL. (going out later) She has a year 98. Is this dependent on the year of construction or is correct what with my oil and the airbag not? I also checked the oil but the oil is optimal at maximum! As far as I know these indicator lights must light up every time or not? In advance thank you for your answers ! Lg, Dennis Edit: Oh just the oil indicator light has lit up with me and that permanently until I started the car it went out. Dan I made my escort again on ignition and now the oil indicator light lights up again. again no more! oô I’m a little confused!