Tricky battery change

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Octo-p
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Joined: 16.12.2007
Location: Paris & Zürich

I replaced the original Mercedes battery with a Suntech 100 Ah / 950 A (3 years warranty, € 200.)

The battery is situated rear left.

But the car did not start. Problem was, that by removing the ground/earth screw (at 7 o'clock in pic A) a nut underneath the car (pic B) comes off.

The big ground/earth screw does not need the nut for tightening, but the G will not move unless you reattach the other ground cable underneath with the nut.

A few years back, the ignition sometimes wouldn't work properly, and the cause was also this #!@^% nut being a bit loose.

cheers

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