Brake warning lights are there on the dash because they serve a purpose. What it does is to alert the driver that something is wrong with the braking system. It it suddenly lights up, immediately check your owner’s manual as it can mean a lot of things.

It can simply mean that the hand or parking brake is on and that you just need to disengage it. It can also mean the DOT-3/brake fluid in the master cylinder is low. If you smell something burning and it comes on, then the reason is obvious. If you do have an ABS-equipped car, then this means that you have an ABS light on the dash. This usually comes on when the car is started then switches off later. If it lights up, blinks, or stays on, then the ABS computer has gone a bit awry. Unfortunately, the problem can be as simple as a foreign matter has messed up with one of the sensors, or as complex as replacing the entire ABS unit.

In any case, if the warning light goes on, the best course of action, still is to get it scanned and tested by a qualified mechanic. Your braking system is not one to just ignore. As I would put it, stopping is more important than getting from 0-60 in sub-8 seconds. Getting a portable ODB-II scanner that you can easily link to your car’s diagnostic port can also give you an immediate result as to what’s causing the problem. Just have a reference guide of the error codes for your car.