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Reset the Tire Pressure Monitor TPM, refer to
page 281.
Replace the nonworking tire and the sealant
container of the Mobility System promptly.
Snow chains
Safety information
WARNING
With the mounting of snow chains on un‐
suitable tires, the snow chains can come into
contact with vehicle parts. There is a risk of ac‐
cidents or risk of damage to property. Only
mount snow chains on tires that are desig‐
nated by their manufacturer as suitable for the
use of snow chains.◀
WARNING
Insufficiently tight snow chains may
damage tires and vehicle components. There
is a risk of accidents or risk of damage to prop‐
erty. Make sure that the snow chains are al‐
ways sufficiently tight. Re-tighten as needed
according to the snow chain manufacturer's in‐
structions.◀
Fine-link snow chains
The manufacturer of your vehicle recommends
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:
▷ 225/60 R 18.
▷ 245/50 R 19.
Follow the snow chain manufacturer's instruc‐
tions.
Do not initialize the run-flat tires after mount‐
ing snow chains, as doing so may result in in‐
correct readings.
Do not reset the Tire Pressure Monitor TPM
after mounting snow chains, as doing so may
result in incorrect readings.
When driving with snow chains, briefly activate
Dynamic Traction Control DTC to optimize the
forward momentum.
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 in‐
flation 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 268, such as tires with special
approval, the system needs to be actively re‐
set. The system will then take over the actual
tire inflation pressures as the target pressures.
When operating the system, also note the ad‐
ditional information found in the Tire inflation
pressure, refer to page 268, chapter.
Seite 281
Wheels and tires Mobility
281
Online Edition for Part no. 01402984955 - X/17
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