2011 Mercedes SL-Class Owner's Manual - Page 291

Towing the vehicle USA only 289 X Canada only Insert flat, blunt object as a lever into upper left or right recess of cover :. X Loosen cover : using the lever. X Fold cover : down in direction of arrow to reveal the threaded hole for the towing eye bolt. Fixing towing eye bolt X Press mark on cover : as indicated by the arrow and pull on lower edge simultaneously. X Lift cover : off to reveal the threaded hole for the towing eye bolt. Example illustration front bumper X Removing cover in rear bumper G Warning! In order to avoid possible serious burns or injury, use extreme caution when removing the rear cover, because the rear exhaust pipe is extremely hot. Take the towing eye bolt and, if so equipped, the wheel wrench from the vehicle tool kit (Y page 224). X Screw towing eye bolt ; clockwise into threaded hole to its stop. X Insert wheel wrench into towing eye and tighten towing eye bolt ; by turning it clockwise. or X If your vehicle is not equipped with a wheel wrench, use a suitable object to turn the towing eye bolt. Z Practical hints X Example illustration USA, bumper in Canada differs slightly Press mark on cover : as indicated by the arrow. X Lift cover : off to reveal the threaded hole for the towing eye bolt.