165Roof racks,caravan and trailertowing Roof racks 3For reasons of safety and to avoiddamaging the roof, we recommend thatyou use the Vauxhall roof rack systemapproved for your vehicle. C onsult yourVauxhall Authorised Repairer.Disenga ge c ov ers concealing roof rackmounts by pushing sliders in direc tion ofarrow (e.g. with coin) and remove. To closeroof rack mounts, insert covers at front a ndengage slid ers at rear.Fasten the roof ra ck follow ing theinstructions that accompa ny the system .Driv ing hints – see pa ge 138.Towing e quipme nt 3Use only towing equipment that has beenapp rov ed for your v ehicle. We recommendentrusting the retrofitting of towingequipment to y our Vauxhall AuthorisedRepairer, who will advise you on anypossible towed load increa ses. YourVauxhall Authorised Repairer hasinstructions on how to install the towingequipment and make any necessarychanges to the vehicle that affec t thecooling system, heat shields or otherequipment.Retrofitting of towing equipm ent is notpossible for vehicles with Pa rk ing DistanceS ensor.For installation dimensions of the trailertowing equipment – see pages 257, 258.Disregard of these notes can lead toinjuries whic h may be fatal. Vehiclepassengers should be informedaccordingly.The coupling ball b ar is to be removedwhen not towing.