Sprinter 3500 V6-3.0L DSL Turbo (2008)
If a vehicle with flat-bed towing equipment is used, the approach ramp angle should not exceed 15 degrees.
TOWING WHEN KEYS ARE NOT AVAILABLE
When the vehicle is locked and keys are not available, use a flat bed hauler. A Wheel-lift or Sling-type device can be used provided all the wheels are
lifted off the ground using tow dollies.