hazard warning lights

[Frodsham Handyman]

As there is no problem when the weather isn't hot, I don't think a BSI re-set will help you.
Strange one, this. I am tending to think that there may be a 'dry joint' on the BSI board that
is affected by temperature. If you're up to pulling out the BSI when this fault occurs you may be able to
isolate it by gently tapping the components with a plastic tool or your finger tip where you can reach.
(Or you can do the same when the fault is not apparent and see if you can make it appear.)
Oh...a 'dry joint' is a poorly made solder joint that does not bond to the PCB track correctly.

Hi My 07 Plate berlingo has just started doing the same thing today...Put heater on hot in car and the Hazards starting flashing... did you get to the bottom of your fault?

Any help greatly appreciated

Thanks.

[ggiannis]

Hi. I'm having a problem with my hazard warning lights which have started coming on by themselves. This is only happening when the weather is hot - in normal weather they're OK. Once they come on the won't switch off with the switch. I just have to leave the car and eventually they stop. I had a new switch fitted thinking that heat build up in the cab may be affecting it somehow but this made no difference. I've searched the forum but no one seems to have had this problem. Does anyone have any ideas please? My Berlingo is an 08 Reg, Mark 2. Thanks.

I had the same problem with a Citroen Berlingo.
On the passenger side of the engine bay, there is a red switch on the chassis next to the timing belt.
This switch has a ball in it and activates the hazard warning lights in the event of an accident.
Maybe the switch itself is faulty or the cables connected to it are somehow damaged and in touch with each other.
In my case, the cables went loose, touched the belt above the steering fluid pump and created a shortcut