Moextended Run-Flat System; Lowering; Tightening Torque - Mercedes-Benz 2011 CL-Class Operator's Manual

emergency spare wheel could damage the
brake system.
X
Clean the wheel and wheel hub contact
surfaces.
! To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt.
X
Slide the emergency spare wheel onto the
alignment bolt and push it on.
X
Tighten the wheel bolts until they are
finger-tight.
X
Unscrew the alignment bolt.
X
Tighten the last wheel bolt until it is finger-
tight.
Lowering the vehicle
X
Turn the crank of the jack counter-
clockwise until the vehicle is once again
standing firmly on the ground.
X
Place the jack to one side.
X
Tighten the wheel bolts evenly in a
crosswise pattern in the sequence
indicated (: to A). The tightening torque
must be 110 lb/ft (150 Nm).
G
Warning
Have the tightening torque checked
immediately after a wheel is changed. The
wheels could come loose if they are not
tightened to a torque of 110 lb/ft
(150 Nm).
X
Turn the jack back to its initial position and
store it together with the rest of the vehicle
tool kit in the stowage well under the trunk
floor.
i When you are driving with the emergency
spare wheel mounted, the tire pressure
monitor cannot function reliably. Only
restart the tire pressure monitor when the
defective wheel has been replaced with a
new wheel.
All mounted wheels must be equipped with
functioning sensors and the defective
wheel should no longer be in the vehicle.

MOExtended run-flat system

The MOExtended run-flat system allows you
to drive on even if there is a complete loss of
pressure in one or more tires.
The MOExtended run-flat system may only be
used in conjunction with the activated tire
pressure loss warning system or with the
activated tire pressure monitor.
The maximum permissible distance which
can be driven in run-flat mode depends on the
cargo in the vehicle. You can drive 50 miles
(80 km) if the vehicle is partially laden and
18 miles (30 km) if it is fully laden.
The maximum permissible distance which
can be driven in run-flat mode is counted from
the moment the tire pressure loss warning
appears in the multifunction display.
You must not exceed a maximum speed of
50 mph(80 km/h).
Flat tire
425
Z