Key only works when back cover is off?

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SVAMG

New Member
Joined
Dec 13, 2020
Messages
16
Location
United Kingdom
Car
2009 Mercedes-Benz E220
Afternoon all

So I have searched and could not find a similar thread.

The key for 2011 W212 (7G) only seems to work if I really press hard against the back cover but works absolutely fine if I pop the back cover off? Works fine then for a few key presses but after a little pressure on the back it'll stop working altogether.

Any suggestions/fixes?
 

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