Important safety notes

Make sure the tailgate is closed when the WARNING
Make sure the tailgate is closed when the engine is running and while driving. Among other dangers, deadly carbon monoxide (CO) gases may enter vehicle interior resulting in unconsciousness and death.

and to the The tailgate swings upwards and to the rear when opened. Therefore, make sure that there is sufficient clearance above and behind the tailgate.

To open the tailgate completely, a minimum clearance of 7.20 ft (2.20 m) above the ground is necessary.

    See also:

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    Driving
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