Reversing sound when breaking

[Foxiesgirl]

So, I think my car is on crack cocaine, whenever I apply my breaks, the reversing sound is made. What the hell is going on and how do I make it stop

[wheeler]

Not sure i understand what you mean by reversing noise, do you mean an electronic sound or a mechanical sound? Has anyone been playing about with bulbs at the back just before this started happening?

[white exec]

Hmm... There are some aftermarket bulbs available which beep when lit - intended for reversing lights, NOT brake lights!

[admiral51]

Maybe a wiring issue if we are talking about reversing beeps.
Could be a bulb blown and shorting across etc ?

[xantia_v6]

Check to see that the brake lights come on when braking, not the reversing lights. Also check that the reversing lights come on in reverse.