Your car's warning lights can let you know when something needs immediate attention, and a circle with an exclamation mark is ...

The triangle symbol, the master warning light, may also be triggered ... would certainly make anyone uneasy is the brake failure alert. If your car has issues with its brake, the triangle symbol ...

Ignoring a light could lead to serious damage, as well as your car failing its next MoT ... enabling you to retain steering control and brake in a shorter distance than would otherwise be possible.