Ducato Hello to all

[Poppabear22]

I have a 2008 3.0L Fiat ducato 160 multi jet motorhome. Unfortunately the MH will not start using the key, but starts using a jump starter. Any thoughts??

 

[bugsymike]

I have a 2008 3.0L Fiat ducato 160 multi jet motorhome. Unfortunately the MH will not start using the key, but starts using a jump starter. Any thoughts??

Duff battery, poor earth leads, poor starter leads, etc., etc.
Needs testing with meters really.