Driving and operating 111The maximum permissible verticalcoupling load is specified on thetowing equipment identification plateand in the vehicle documents. Alwaysaim for the maximum load, especiallyin the case of heavy trailers. Thevertical coupling load should neverfall below 25 kg.In the case of trailer loads of1200 kg or more, the vertical couplingload should not be less than 50 kg.Rear axle loadWhen the trailer is coupled and thetowing vehicle fully loaded (includingall occupants), the permissible rearaxle load (see identification plate orvehicle documents) must not beexceeded.Towing equipmentCautionWhen operating without a trailer,remove the coupling ball bar.9 WarningTowing a trailer is permitted onlywhen a coupling ball bar is fittedcorrectly. If the coupling ball bardoes not engage correctly, seekthe assistance of a workshop.Towing equipment audiblewarningFor vehicles fitted with towingequipment, when connected to atrailer the pitch of the audible warningchanges upon operation of the turnsignals.The pitch of the audible warning willalso change if a turn signal light on thetrailer or the towing vehicle fails.
