Mercedes-Benz A-Class 2021 Operator's Manual page 273

If, after ten minutes, a tire pressure of
200 kPa (2.0 bar/29 psi) has not been
attained:
Switch off the tire inflation compressor.
#
Unscrew the filling hose from the valve of the
#
faulty tire.
Please note that tire sealant may leak out when
unscrewing the filling hose.
Drive forwards or in reverse very slowly for
#
approximately 33 ft (10 m).
Pump up the tire again.
#
After a maximum of ten minutes the tire
pressure must be at least 200 kPa (2.0 bar/
29 psi).
& WARNING Risk of accident due to the
specified tire pressure not being attained
If the minimum tire pressure is not reached
after the specified time, the tire is too badly
damaged. The tire sealant cannot repair the
tire in this instance.
The braking and driving characteristics may
be greatly impaired.
Do not continue driving.
#
Consult a qualified specialist workshop.
#
* NOTE Staining caused by leaking tire
sealant
After use, excess tire sealant may leak out
from the filling hose.
Therefore, place the filling hose in the
#
plastic bag that contained the TIREFIT
kit.
If, after ten minutes, a tire pressure of
200 kPa (2.0 bar/29 psi) has been attained:
Switch off the tire inflation compressor.
#
Unscrew the filling hose from the valve of the
#
faulty tire.
Please note that tire sealant may leak out when
unscrewing the filling hose.
Breakdown assistance 271
& WARNING Risk of accident from driving
with sealed tires
A tire temporarily sealed with tire sealant
impairs the handling characteristics and is
not suitable for higher speeds.
Adapt your driving style accordingly and
#
drive carefully.
Do not exceed the maximum speed
#
limit with a tire that has been repaired
using tire sealant.
Observe the maximum permissible speed for
#
a tire sealed with tire sealant 50 mph
(80 km/h).
The sticker with details of the maximum per‐
#
missible speed must be affixed to the instru‐
ment cluster where it can be easily seen by
the driver.
* NOTE Staining caused by leaking tire
sealant
After use, excess tire sealant may leak out
from the filling hose.