Changed Battery on 06 Merc E200, Visit Workshop showing battery still coming up.

Beta Ray Bill

Hi All

I Changed the Battery on 06 Merc E200 after a couple of weeks of the "Visit Workshop" with a picture of a battery message appearing in the centre of the instrument console.

The Message is still appearing even now that a brand new battery has been fitted.

I'm thinking this is some sort of error message which needs to be reset, either that or there is a second battery somewhere in the car.

Does anyone know how to do it?
I have checked for faults using a OBDII software but no error messages are appearing.

Regards
G.

crosshair1

auxilary battery under the pollen filter housing,
you will need to have the battery control module interrogated for faults though

Beta Ray Bill

I see,

How do I perform Diagnostics on the Battery control module?
Is there an interface for it somewhere?
Is this something that I will need a specialized Merc tool for?
Where is the Pollen Filter housing?

G

crosshair1

You need a professional scantool to access this module, the pollen housing is at the base of the passenger side windscreen, under the bonnet.

Beta Ray Bill

Yeah

I managed to find it,

If I replace the Battery is there a chance that it could clear the warning?

crosshair1

There is always a chance, but this system has its own controller, an alternator, switching relay, couple of fuses..etc....
I'd be getting it scanned first, youve probably bought one battery that wasnt needed already and I think the auxillary is about 150eu from mercedes.
So not worth gambling.