Our 2009 Mazda 5 has a unwanted feature which has popped up.
while parked the hazard / warning lights come on by themselves.
4 days ago it happened in the middle of the night and the battery was dead by morning.
Today - it happened in the middle of the day but my wife noticed it before it drained the battery -
the only other time was 4 months ago in the middle of the night ..... dead battery !
Anyone had the same issue? solutions? suggestions? (besides exorcism)

love the 5 but can't live like this .... thanks for any help you can provide.

 

This happened to me last night..
It's been preceded by the hazard light button giving trouble to operate - sometimes I press the hazard light and it doesn't stay on; other times it does. I'm thinking it has something to do with the button itself, so I'm gonna open up the dash sometime soon - I'll let you know how it goes!

 

I have a 2008 Mazda5 GT with the same hazard light issue. The lights do not always stay on when the switch is activated, they work for a while then stop and the restart again. Not only that but like the OP I came out to the garage in the morning and found the hazards had switched themselves on over night thus resulting in a dead battery.

So my questions are:

Where is the hazard flasher located on this vehicle. I have seem some talk of it being built into the Body Control Module but not sure if this applies specifically to a 2008 M5.

Replacing the flasher (if possible) is likely a good place to start. However, if that doesn’t solve the problem has anybody had any luck opening up the switch and actually repairing it as opposed to forking out $150 for a new switch?

Thank you very much.

 

I have looked at the fuse block under the hood and none of the relays etc. in there are marked flasher or hazard. There is a 10A fuse under there for the hazards but that checks out fine.

The clicking/blinking noise, when the hazards are activated, sounds like its coming from right up under the dash, above the pedals, behind the instrument cluster.