What is this red light on for ??

[wilber71]

Hi, I have not drove my bay for four weeks, and when driving it today, a red light is on.... What is it please ? Can't find anything in the Haynes manual. It's the red light which is to the left of the heater controls , it has a letter 'B' on it , which I would imagine is battery ???? Help

 

[CPBerry2011]

Check brake fluid level. You may have a leak or it may just need topping up!