This chapter contains information on the following subjects:
→ Function and operation by the user
The Driver Alert System informs the driver if his or her driving shows signs of tiredness.
Additional information and warnings:

WARNING
The Driver Alert System has been developed for use only while driving on highways and good roads.
If there is a system fault, proceed to a qualified workshop immediately to have the system checked.
Function and operation by the userRemoving and installing refrigerant shut-off valve for high-voltage battery
heat exchanger -N542
Removing
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Observe safety precautions
→ Chapter „Safety precautions when handling refrigerants“.
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Comply with notes
→ Chapter „Working on refrigerant circuit“.
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Removing and installing tank flap unit
Removing
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Screw off tank cover.
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Remove bolt -3-.
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Slightly pull tank flap unit towards rear
-arrow a- out of catches.
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Swing tan ...
Swellings in the tyre sidewall
A swelling in the sidewall of the tyre indicates that the
substructure of the carcass has been damaged.
Typical causes for such damage include, for example, driving
over kerbs at a sharp angle.
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