What's This Thing ?
I came across this tool near by the spare tyre . So, what's it ? I looked the manual and could not figure out what it was lol
There are cables but it's not battery
Another thing, my tires are Continental but this spare tyre is Pirelli
. So, I would appreciate some of guys take a look your spare tires and see if these are also different brand or not BTW, I am very happy with my Continentals

Thanks
Thanks for your replies, it never dawned on me that there was a battery for ECO / START thingy lol
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I came across this tool near by the spare tyre . So, what's it ? I looked the manual and could not figure out what it was lol
There are cables but it's not battery
Another thing, my tires are Continental but this spare tyre is Pirelli
. So, I would appreciate some of guys take a look your spare tires and see if these are also different brand or not BTW, I am very happy with my Continentals

Thanks
lol Well, thanks for your reply , I will e-mail this image to a friend of mine in the dealership . Let's see what it turns out to be lolEDIT :
Final verdict is it's an additional battery that helps ECO / START system run on . Let's say you turn on this ECO button and waiting at the lights and this ensures engine to stop and start when you press the gas pedal it helps the engine start w/o making it feel any jerk
Last edited by BenzV12; May 29, 2012 at 04:41 AM.
lol Well, thanks for your reply , I will e-mail this image to a friend of mine in the dealership . Let's see what it turns out to be lolEDIT :
Final verdict is it's an additional battery that helps ECO / START system run on . Let's say you turn on this ECO button and waiting at the lights and this ensures engine to stop and start when you press the gas pedal it helps the engine start w/o making it feel any jerk
If you have a full size spare and it is not the same as the driving tires on the car, I would ask mercedes to replace it with the same tire as your driving tires....someone, at some point, will use that tire to retire a wheel and you will have a mismatch of tires.











