2006 Mercedes R-Class Owner's Manual - Page 501

Practical hints Towing the vehicle ! To be certain to avoid additional damage to the vehicle powertrain, however you should observe the following: With damage to the front axle raise front axle remove flexible drive shaft between rear axle and transfer case With damage to the rear axle raise rear axle tow vehicle with wheel lift or dolly placed under front wheels With damage to the transfer case remove flexible drive shaft to the drive axles Always install new self-locking nuts when reinstalling flexible drive shaft. Warning! G Warning! G 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 power supply or in the vehicle's electrical system Prior to towing the vehicle with all wheels on the ground, make sure the SmartKey is in starter switch position 2. If the SmartKey is left in starter switch position 0 for an extended period of time, it can no longer be turned in the switch. In this case, the steering is locked. To unlock, remove SmartKey from starter switch and reinsert. With the engine not running, there is no power assistance for the brake and steering systems. In this case, it is important to keep in mind that a considerably higher degree of effort is necessary to brake and steer the vehicle. Adapt your driving accordingly. i To signal turns while being towed with hazard warning flasher in use, turn the SmartKey in starter switch to position 2 and activate combination switch for left or right turn signal in usual manner - only the selected turn signal will operate. Upon canceling the turn signal, the hazard warning flasher will operate again. 500