Mercedes-Benz GLA 180 Owner's Manual page 342

Tyre pressure loss warning system
General notes
While the vehicle is in motion, the tyre pressure
loss warning system monitors the set tyre pres-
sure using the rotational speed of the wheels.
This enables the system to detect significant
pressure loss in a tyre. If the rotational speed of
a wheel changes as a result of a loss of tyre
pressure, a corresponding warning message will
appear on the multifunction display.
You can recognise the tyre pressure loss warn-
ing by the Run Flat Indicator active Run Flat Indicator active
Restart with OK Restart with OK message which appears in
the multifunction display in the
Information on the message display can be
found in the "Restarting the tyre pressure loss
warning system" section (
Important safety notes
The tyre pressure warning system does not warn
you of an incorrectly set tyre pressure. Observe
the notes on the recommended tyre pressure
( page 337).
Y
The tyre pressure loss warning system does not
replace the need to regularly check the tyre
pressure. An even loss of pressure on several
tyres at the same time cannot be detected by
the tyre pressure loss warning system.
The tyre pressure loss warning system is not
able to warn you of a sudden loss of air, e.g. if the
tyre is penetrated by a foreign object. In this
event, bring the vehicle to a halt by braking
carefully. Avoid abrupt steering manoeuvres.
The function of the tyre pressure loss warning
system is limited or delayed if:
snow chains are fitted on your vehicle
R
road conditions are wintry
R
you are driving on a loose surface (e.g. sand or
R
gravel)
you adopt a very sporty driving style (corner-
R
ing at high speeds or driving with high rates of
acceleration)
you are towing a very heavy or large trailer
R
you are driving with a heavy load (in the vehi-
R
cle or on the roof)
Serv.menu. Serv.
page 339).
Y
Restarting the tyre pressure loss warn-
ing system
Restart the tyre pressure loss warning system if
you have:
changed the tyre pressure
R
changed the wheels or tyres
R
fitted new wheels or tyres
R
Before restarting, make sure that the tyre
X
pressures are set properly on all four tyres for
the respective operating conditions. The rec-
ommended tyre pressures can be found in the
tyre pressure table on the fuel filler flap.
The tyre pressure loss warning system can
only give reliable warnings if you have set the
correct tyre pressure. If an incorrect tyre
pressure is set, this incorrect value will be
monitored.
Observe the notes in the section on tyre pres-
X
sures ( page 337).
Y
Make sure that the key is in position 2 in the
X
ignition lock ( page 144).
Y
Press = or ; on the steering wheel to
X
select the Serv.menu. Serv.
Press the 9 or : button to select
X
Tyre pressure Tyre pressure.
Press the a button.
X
The Run Flat Indicator active Run Flat Indicator active
Restart with OK Restart with OK
multifunction display.
If you wish to confirm the restart:
Press the a button.
X
The Tyre press. Tyre press. now now OK?
in the multifunction display.
Press the 9 or : button to select
X
Press the a button.
X
The Run Flat Indicator restarted Run Flat Indicator restarted
sage appears in the multifunction display.
After a teach-in period, the tyre pressure loss
warning system will monitor the set tyre pres-
sures of all four tyres.
If you wish to cancel the restart:
Press the % button.
X
or
If the Tyre press. now OK? Tyre press. now OK?
X
appears, press the 9 or : button to
select Cancel Cancel.
Press the a button.
X
The tyre pressure values stored at the last
restart will continue to be monitored.
Tyre pressure
message appears in the
OK? message appears
Yes. Yes
mes-
message
Z
339