Mercedes-Benz C-Class Saloon Owner's Manual page 425

Important notes on using the jack:
Only use the vehicle-specific jack that has
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been tested and approved by Mercedes-Benz
to raise the vehicle.
The jack is only designed for raising and
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holding the vehicle for a short time while a
wheel is being changed and not for mainte‐
nance work under the vehicle.
The jack must be placed on a firm, flat and
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non-slip surface. If necessary, use a large,
flat, load-bearing, non-slip underlay.
The foot of the jack must be positioned verti‐
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cally under the jacking point.
Rules of conduct when the vehicle is raised:
Never place your hands or feet under the
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vehicle.
Do not lie under the vehicle.
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Do not start the engine and do not release
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the electric parking brake.
Do not open or close any doors or the boot
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lid.
Using the wheel wrench, loosen the wheel
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bolts on the wheel you wish to change by
about one full turn. Do not unscrew the bolts
completely.
Wheels and tyres 423
Position of jack support points
Cover of jack support points