Use
Use only in pairs on the rear wheels, equipped
with the tires of the following size:
▷ 265/50 R19.
▷ 275/45 R20.
Information on the wheel size and rim offset is
located on the inside of the wheel.
The list can also include wheel/tire sizes that
are only suitable for certain models.
Information about approved wheels and tires
for the vehicle can be requested from an au-
thorized service center or another qualified
service center or repair shop.
Follow the tire chain manufacturer's instruc-
tions.
Do not initialize the flat tire monitor after
mounting tire chains, as doing so may result
in incorrect readings.
Do not reset the Tire Pressure Monitor after
mounting tire chains, as doing so may result in
incorrect readings.
When driving with tire chains, activate the Dy-
namic Traction Control briefly to optimize the
drive power.
Maximum speed with tire chains
Do not exceed a speed of 30 mph/50 km/h
when using tire chains.
Rear axle steering during operation
with snow chains
General information
In order to guarantee free movement of the
wheels when operating with tire chains, rear
axle steering of the integral active steering
must be switched off when tire chains are
mounted.
Safety information
Warning
When rear axle steering is switched on and
tire chains are mounted, there can be contact
between tire chains and the body. There may
be a risk of accident or risk of damage to
property. With mounted tire chains, switch off
the rear axle steering.
Switching off rear axle steering
The rear axle steering is switched off by speci-
fying that tire chains are installed.
1.
"CAR"
2. "Settings"
3. "General settings"
4. "Tire chains"
5. "Tire chains installed"
Starting with the permissible maximum speed
with snow chains of 30 mph/50 km/h the rear
axle steering will be switched on again auto-
matically.
Tire pressure monitor
Principle
The Tire Pressure Monitor monitors the tire
pressure and issues a warning if the tire pres-
sure has dropped.
General information
Sensors in the tire valves measure the tire in-
flation pressure and tire temperature.
Depending on the tires detected or registered,
the system displays the specified nominal
pressures on the control display and compares
them with the current tire pressures.
If tires are being used that are not specified
in the tire inflation pressure details on the ve-
hicle, such as tires with special approval, the
Seite 373
Wheels and tires
MOBILITY
373
Online Edition for Part no. 01405A604A9 - VI/22
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