Beeping from dash - 1992 BMW 3 Series

that is weird, could be a squeak in your hvac fan, see if it changes with speed of fan, usually a beep is accompanied by a light on the dash as well

Top up the brake fluid and make sure the brake stop lights are all working.

SOUNDS LIKE SOME KIND OF WARNING SIGNAL

Ok, so are you saying NO LIGHTS come on to tell you what issue is on the dash? The beeping you hear is a low oil pressure warning beep. Its telling you that you are either low on oil or that the oil pump is not delivering oil properly to the motor (car is sensing low oil pressure but on these cars there is no oil pressure gauge on dash to look at). Check your oil level and make sure you are not low. Best time is in morning on flat surface start car and let run 5 minutes. Stop car, let sit 5 minutes and then pull dipstick and check level. Also make sure you are using the correct oil and viscosity for this motor. VW's require VW certified oil and a certain viscosity. You can go to www.mobil1.com to find the correct oil available in the states for your vehicle. Too thin or too thick a viscosity could cause similar issue. Otherwise please clarify the light comment as I have never heard of the lights coming on automatically after a beeping noise and I will research.

The problem went away on its own! I took it for a 10 km drive and there was no beeping sound.

beeping noise in dash z 4

UNDER THE DASH IS A BLUE MODULE.. IN CENTER OF LOWER DASH... IT IS THE AIR BAG DIAGNOSTIC MODULE..... IF IT FINDS ERRORS IT WILL BEEP... DID SOMEONE RIG YOUR AIR BAG LIGHT ,,OR IS IT LIT UP... LET ME KNOW

beeps are warning signs. check: switch lights, seat belts, doors, engine hood, trunk.

Replace your air bag light. It's prob. burned out.