Technical Immobiliser intermittent 2007 3.0 Hymer

[SteveiC]

Hi folks

newbie on here

I am having a problem with a 2007 ducato 3.0 MOHO ...usually when the engine has had a really long run the immobiliser light doesn't go out there isn't a click when the sigma alarm disarm button is pressed....it does sound like a dodgy relay to me....once the vehicle has cooled down all is good again....until next time...sometimes it's fine for months.

I have refixed and doubled up the engine to chassis earth lead which is a known issue on these

Any other bright ideas would be most welcome

 

[jackwhoo]

Disconnect the sigma immobilizer so you are only trying to diagnose one system.