Auxiliary Battery Malfunction

[Colin Stirling Jones]

Morning all, Mr Stupid here again.
My C220 Bluetec started displaying the above message yesterday. According to reports I’ve read online, when the aux battery fails you lose GPS, radio, parking sensors, safety info etc.
I’ve got all those still and nothing else seems amiss but I’m blowed if I can find my Aux battery. Can anyone enlighten me please?

 

[onefortheroad]

I hope you've found it , in the boot .

 

[EmilysDad]

Morning all, Mr Stupid here again.
My C220 Bluetec started displaying the above message yesterday. According to reports I’ve read online, when the aux battery fails you lose GPS, radio, parking sensors, safety info etc.
I’ve got all those still and nothing else seems amiss but I’m blowed if I can find my Aux battery. Can anyone enlighten me please?

Merc put a sticker, generally on the inside of the filler cap, of a QR Code (Rescue Code) that is intended to give information to the fire brigade of where your batteries, airbags, fuel tanks etc are. Having said that, it suggested that my 07 R Class had 2 batteries, but it didn't!