Mercedes-Benz CLS Owner's Manual page 122

Stow all objects in the vehicle securely
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so that they cannot get into the driver's
footwell.
Always fit the floor mats securely and
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as prescribed in order to ensure that
there is always sufficient room for the
pedals.
Do not use loose floor mats and do not
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place floor mats on top of one another.
Installing floor mats
Slide the corresponding seat backwards and
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lay the floor mat in the footwell.
Press studs 1 onto holders 2.
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Adjust the corresponding seat.
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Removing floor mats
To remove: pull the floor mat off holders 2.
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Seats and stowing 119
Remove the floor mat.
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