Originally Posted by padgett
My method would be to put a DVM in series with the battery. If drain is over 50ma with everything off (200 ma will kill in a couple of days, I usually see 17-20ma & can leave for over a week), start pullong fuses until it goes away. If the alternator is suspect, disconnect.
Once you know what is causing the drain you can find out why.
Thanks for that - I will suggest this to the dealers. I have asked them if they have checked the battery's and alternator's performance as well as all the connectors, especially to the battery etc. and they say they have and all is OK. They have ordered a replacement 'main computer module'(whatever that is!) from your USA but I'm not sure if they are certain that this will cure the problem - they installed a new engine management module the first time it happened and that made no difference.
I am concerned that they may continue to replace modules etc. until, hopefully the fault is fixed - could take months!
Car is still with dealer and no indication as yet when I will have it back