Citroen Xsara Picasso brake lights at rear go on and off whilst driving

Check, replace or adjust (if adjustable) brake light switch at top of pedal

thank you i will have a look at what you have suggested, many thanks

Glad to help , common fault on a lot of cars .Hope it fixes the problem .

My handbrake bar has started to become very easy to lift, I have lifted up the carpet and noticed that a black clip that holds the cable in place has broken so cable could slip out at any time...could this make my brake lights flash? and do you know what part i should get (name of it) and maybe where from to fix it please? also i have tried looking for switch under the pedal but i dont think im capable of getting to it so maybe better off letting a garage take a look which is why im trying to rule out all other possible causes first :)

The handbrake should not affect the brake lights .You will need to get the h/brake cable checked out to see what is needed .Some info on switch location , 5 min job .


" The switch has two wires and is clearly visible where the fusebox cover is removed. The connector is about 6mm square and has a cutout on one side, although you wont see this until you have removed the plug. I rotated the switch clockwise to allow the lights to go off."

your a good person, thanks for all the advice, will give it a look when i get the chance as have a baby. :-)

to whittingehame, just to say we changed the switch and the old one was staying held down on its own so imagine that this was the problem so would just like to thank you for your great advice and for the time you have taken to help me out. best wishes rolcaine :-)