Testing for slow battery drain W211

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Austy

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1998 SL320 2003 CLK270CDI 2004 E320CDI 2006 CLS320CDI
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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

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2014 639 Viano- 651, 5sp Auto. 2009 S211- 646, 5sp Auto.
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.
 
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Austy

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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

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

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