I ask because when I initially turn the key before actually starting the engine, all of my dash warning lights illuminate except for "PSM OFF", "FUEL CAP", the spoiler light and the seat belt logo.

My car is a 1999 996 with factory aero kit, so I don't know if the spoiler light is still supposed to light up.

I'm assuming the seat belt light is burned out. I simply don't know if the PSM and FUEL CAP lights are supposed to illuminate at start or if they only do it when an issue is detected.

Here is a pic of the lights that illuminate.

 

My 99 aero spoiler lights stays lit after starting until I reach 5mph. Besides my perpetual airbag light, that is all. Seatbelt light if not buckled of course. I don't have PSM and didn't know about the gas cap light. I may not have that option.

 

Yeah the fuel cap light bulb may not even be installed, but I can see the logo of the light when I shine a flashlight on the dash.

I have LSD on the car with traction control, and my TC light works as it should. I guess I don't have PSM installed either because I don't have that option code under the hood.