gliches

In January I acquired a 1986 BMW 325 from my brother in law who recommended that I get on one of these forums for answers. He also told me that this car has a bunch of gliches. Recently, my "check" light blinks for no apparent reason. It doesn't do it all the time. When it first started I immediately went and got my oil changed (a month early). Then I took it to the fellow that's been do simple mechanics on it. He checked my brakes. If the car needed freon would this make the light blink or is this just another quirk with this model?

do u mean ur headlights glitch???
u mean like ur lights shake??
or turn offand on?