2009 Mercedes SLR McLaren Owner's Manual - Page 373

Practical hints Towing the vehicle Towing the vehicle Mercedes-Benz recommends that the vehicle be transported with all wheels off the ground using flatbed or appropriate wheel lift/dolly equipment. ! When towing the vehicle with all wheels on the ground, the gear selector lever must be in neutral position N and the SmartKey must be in starter switch position 2. When towing the vehicle with all wheels on the ground, the vehicle may be towed only for distances up to 30 miles (50 km) and at a speed not to exceed 30 mph (50 km/h). Warning! G ! Use flatbed or wheel lift/dolly equipment with SmartKey in starter switch turned to position 0. Do not tow with sling-type equipment. Towing with sling-type equipment over bumpy roads will damage radiator and supports. To prevent damage during transport, do not tie down vehicle by its chassis or suspension parts. If circumstances require towing the vehicle with all wheels on the ground, always tow with a tow bar if: the engine will not run there is a malfunction in the electro-hydraulic brake system there is a malfunction in the power supply or in the vehicle's electrical system This is necessary to adequately control the towed vehicle. Prior to towing the vehicle with all wheels on the ground, make certain that the SmartKey is in starter switch position 2. ! To be certain to avoid a possibility of damage to the transmission, however, we recommend the drive shaft be disconnected at the rear axle drive flange for any towing beyond a short tow to a nearby garage. ! Do not tow-start the vehicle. When circumstances do not permit the recommended towing methods, the vehicle may be towed with all wheels on the ground only so far as necessary to have the vehicle moved to a safe location where the recommended towing methods can be employed. 373