Hi all
desperately hoping someone on here can shed some light on this for me!

very randomly my 06 D3 won’t start
it will unlock fine, but when you turn the key in the ignition the doors all lock and unlock, the every 3rd blink on the red immobiliser light it blinks rapidly 3 times!

sometimes this lasts a few seconds then it starts.
this morning it was over 30 mins before it decided it wanted to go!

we've had it plugged in to a diag machine but it is not showing any faults whatsoever

it’s also so random that by the time the AA guys get to it, it starts! Which makes me look like a complete idiot 😂🤦🏼‍♀️

any ideas 💡 ?????

thanks
😊