Occasionally, upon hard acceleration I have gotten a brake fluid warning light. This makes sense as the fluid might drop away from the sensor depending on where it is placed.

However, it has gotten more frequent lately and now it just comes on when I start the car up. I check the fluid and the reservoir is about half full. I thought about topping it off but didn't want to open a large bottle of fluid only to top off the reservoir since it expires. I'd like to flush the system while I'm at it.

Just curious if anyone has thoughts on what may be occurring. Maybe I should be looking for a leak in the system somewhere as the fluid could be dropping slowly and now it is to the point where it is tripping the sensor?

Thanks,

Joe