Mercedes-Benz GLB 2021 Series Operator's Manual page 292

290 Breakdown assistance
Press on and off switch 8 on the tire infla‐
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tion compressor.
The tire inflation compressor is switched on.
The tire is inflated. First, tire sealant is pum‐
ped into the tire. The pressure may briefly
rise to approximately 500 kPa (5 bar/73 psi).
Do not switch off the tire inflation compres‐
sor during this phase.
Let the tire inflation compressor run for a
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maximum of ten minutes.
The tire should then have attained a tire
pressure of at least 200 kPa (2.0 bar/
29 psi).
If tire sealant leaks out, make sure you clean the
affected area as quickly as possible. It is prefera‐
ble to use clean water.
If you get tire sealant on your clothing, have it
cleaned as soon as possible with perchloroethy‐
lene.
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.
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Unscrew the filling hose from the valve of the
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faulty tire.
Please note that tire sealant may leak out when
unscrewing the filling hose.
Drive forwards or in reverse very slowly for
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approximately 33 ft (10 m).
Pump up the tire again.
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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.
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Consult a qualified specialist workshop.
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* 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
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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.
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Unscrew the filling hose from the valve of the
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faulty tire.
Please note that tire sealant may leak out when
unscrewing the filling hose.