engine start turns Hazzard flashers on

I have a 2012 Renault Grand Scenic 3 130 dc.

As soon as I start the engine the hazzard flashers come on, also if engine goes into Stop/start mode at traffic lights etc when the engine restarts it sets the hazzards flashing again not always able to turn them off straight away using hazzard switch on dashboard.

Has anybody any ideas, wonder if its anything to do with the alarm?

engine start turns Hazzard flashers on