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Snow chains
Safety information
Warning
With the mounting of snow chains on unsuita‐
ble tires, the snow chains can come into con‐
tact with vehicle parts. There may be a risk of
accident or risk of damage to property. Only
mount snow chains on tires that are designated
by their manufacturer as suitable for the use of
snow chains.
Warning
Insufficiently tight snow chains may damage
tires and vehicle components. There may be a
risk of accident or risk of damage to property.
Make sure that the snow chains are always suf‐
ficiently tight. Re-tighten as needed according
to the snow chain manufacturer's instructions.
Fine-link snow chains
The manufacturer of the vehicle recommends
the use of fine-link snow chains. Certain types of
fine-link snow chains have been tested by the
manufacturer of the vehicle and recommended
as road-safe and suitable.
Information regarding suitable snow chains is
available from a dealer’s service center or an‐
other qualified service center or repair shop.
Use
Use only in pairs on the rear wheels, equipped
with the tires of the following size:
▷ 255/45 R 20.
Follow the snow chain manufacturer's instruc‐
tions.
Do not initialize the Flat Tire Monitor after
mounting snow chains, as doing so may result in
incorrect readings.
Do not reset the Tire Pressure Monitor TPM af‐
ter mounting snow chains, as doing so may re‐
sult in incorrect readings.
When driving with snow chains, if needed, briefly
activate M Dynamic Mode.
Maximum speed with snow
chains
Do not exceed a speed of 30 mph/50 km/h when
using snow chains.
Tire Pressure Monitor TPM
Concept
The system monitors tire inflation pressure in the
four mounted tires. The system warns you if
there is a loss of pressure in one or more tires.
General information
Sensors in the tire valves measure the tire infla‐
tion pressure and tire temperature.
Using the tire settings in iDrive, the system can
automatically display the specified target pres‐
sures and compare them with the actual tire in‐
flation pressures.
If tires are being used that are not specified on
the tire inflation pressure details on the vehicle,
refer to page 288, such as tires with special ap‐
proval, the system needs to be actively reset.
The system will then take over the actual tire in‐
flation pressures as the target pressures.
When operating the system, also note the addi‐
tional information found in the Tire inflation pres‐
sure, refer to page 288, chapter.
Safety information
Warning
The display of the target pressures is not a
substitute for the tire inflation pressure details
on the vehicle. Incorrect entries in the tire set‐
tings can lead to incorrect target tire inflation
Seite 300
MOBILITY
Wheels and tires
300
Online Edition for Part no. 01402666865 - VI/19
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