Mercedes-Benz GLB 2023 Operator's Manual page 350

348 Wheels and tires
Vehicles with a tire pressure monitoring sys-
tem: if an emergency spare wheel is installed,
the tire pressure monitoring system cannot
function reliably. For a few minutes after an
emergency spare wheel is installed, the sys-
tem may still display the tire pressure of the
removed wheel. Only restart the system again
when the emergency spare wheel has been
replaced with a new wheel.
Be sure to also observe the following further rela-
ted subjects:
Notes on tire pressure ( page 319)
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Tire and Loading Information placard
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( page 326)
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Tire pressure table ( page 321)
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Notes on installing tires ( page 337)
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Installing an emergency spare wheel
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( page 342)
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Inflating the emergency spare wheel
* NOTE Overheating due to the tire inflation
compressor running too long
Do not run the tire inflation compressor
#
for longer than ten minutes without inter-
ruption.
Requirements:
The emergency spare wheel has been installed
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correctly. ( page 342)
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%
Comply with the manufacturer's safety notes
on the sticker of the emergency spare wheel
and on the tire inflation compressor.
Remove the sticker with the label 50 mph
#
(80 km/h) from the tire inflation compressor
housing and affix it to the instrument cluster
within the driver's field of vision.
Remove the tire inflation compressor from the
#
stowage space under the trunk floor.
( page 301)
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Pull filler hose 1 and plug 3 out of the tire
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inflation compressor housing.
Insert plug 7 of filler hose 1 in the socket
#
on the tire inflation compressor and then turn
7
it until plug engages.
Unscrew the cap from the valve on the emer-
#
gency spare wheel.
Screw union nut 2 of filler hose
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valve.
Make sure on and off switch 4
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inflation compressor is set to 0.
Insert plug 3 in a socket in your vehicle.
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12 V socket: ( page 124)
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1 onto the
of the tire