i recently bought a '95 BMW 318i. a few days ago, a light went on in my dashboard, which i have been unable to identify. the light is located between the parking brake light (which has the icon of a circle with an exclamation point) and the airbag warning sign at the extreme right side. the icon looks like =[ ]= with three wavy lines on top of the box. i was told that it is a warning light to inform me that these is a problem with the coolant level. i added coolant, but the light still won't go off.
is it serious? what do i need to do to reset/get the light to turn off?
secondly, my "check engine light" goes on and off frequently, especially when i hit low RPMs. but the light goes off by itself when i hit a certain speeds. what does that mean?
thank you for any information you can share with me.