Testing for slow battery drain W211

[Austy]

Yes over three days.

Thanks LK. My experience so far is one day and the car is lazy to start, 3 days and I'm very lucky if the remote locking works because it's properly flat. Haven't experienced 2 days but I'd guess at it being ok to open the locks but won't have enough juice to turnover.

Any advice on a suspected cause of the problems listed or a cure?

 

[M80]

Maybe out here but could the MOST loop be open and the Comand looking for kit that it can't see?

Others might answer this question, but a closed MOST loop from eBay could be a way to test, then of course any associated kit won't work.

 

[Austy]

Thanks M80, as stated before I know little to nothing about these things, but if bypassing the nav and foregoing it's functionality will cure all ills it's a price worth paying. The nav is fairly poor anyway. For the sake of a tenner I might as well take a punt on a loop to bypass the nav. Worst case I suppose it will highlight that the Comand is at fault?

 

[LostKiwi]

More likely to either a fault in Comand or something on CanBus waking up Comand.