Have it checked by a mechanic, poor oil pressure is really dangerous for the engine. You might start with checking that you have the right oil level though.
There is nothing to "reset" for the 1999 VW Beetle.
how to reset change oil message on 2013 beetle
A flashing oil light can be warning you of an oil pressure problem. The quantity of oil can be fine but the oil pressure may be low due to other problems.
It means, that you have to refill oil and cooling water.
Tip: The oil light flashing indicates that the pressureof the oil is low, the light does not necessarily indicates when the oil level is low. The problem could be a bad oil pump or a leak in the filter.
When you change the oil, you drain it from the filter where the sensor is. It takes a moment for the new oil to circulate to the filter and let the sensor know you have oil
A yellow flashing engine light is an indication that the engine should be checked. The yellow flashing light can because by low water level or low motor oil.
4.8 quarts with filter
1) remove oil cap 2) put in oil 3) marvel at your accomplishment
Your low on oil or Oil is covering the sensor on the tank.
To stop the oil light from flashing, first check the oil level using the dipstick; if it's low, add the appropriate type of oil. If the oil level is adequate, the issue may be due to a faulty oil pressure sensor or a problem with the oil pump. In such cases, it's best to consult a mechanic for a thorough diagnosis. Ignoring the flashing oil light can lead to serious engine damage, so addressing it promptly is essential.
4 1/2 quarts