emergency tyre RENAULT TWINGO 2017 3.G Owners Manual

2.17
TYRE PRESSURE LOSS WARNING (2/9)
1
SYSTEM A
Operating principle
This system detects a loss of pressure
in one of the tyres by measuring the
wheel speed while driving.
Warning light
 1 comes on to
alert the driver in the event of insuffi-
cient pressure (deflated wheel, punctu-
red tyre, etc.).
Operating conditions
The system should be reset with an
inflation pressure equal to that given
on the tyre inflation pressure label.
Otherwise it risks not giving a reliable
warning in the event of a significant loss
of pressure. Please refer to the informa-
tion on “Tyre pressures” in Section 4.
In the following situations, the system
risk coming into action late or not func-
tioning correctly:
– system not reset after reinflation or any operation on the wheels;
– system badly reset: different inflation pressures from the recommended
pressures;
– significant change in load or distribu- tion of load on one side of the vehi-
cle;
– sporty driving with strong accelera- tion;
– driving on snowy or slippery surface; – driving with snow chains;
– fitting a single new tyre;
– use of tyres not approved by the net-
work.
– ...
This function is an addi-
tional driving aid.
However, the function does
not take the place of the
driver. It cannot, therefore, under
any circumstances replace the vig-
ilance or the responsibility of the
driver.
Check the tyre pressures, including
the emergency spare wheel, once a
month.

2.21
TYRE PRESSURE LOSS WARNING (6/9)
SYSTEM B
Operating principle
Each wheel (except for the emergency
spare wheel) has a sensor in the infla-
tion valve which periodically measures
the tyre pressure while driving.
Warning light
 1 comes on to
alert the driver in the event of insuffi-
cient pressure (deflated wheel, punctu-
red tyre, etc.).
1
Resetting the standard level for the
tyre pressures
This should be done:
– when the standard tyre pressure needs to be changed to adapt to
usage conditions (empty, carrying a
load, motorway driving, etc.);
– after swapping a wheel (however this practice is not recommended);
– after changing a wheel.
It should always be done after checking
the tyre pressure of all four tyres when
cold.
Tyre pressures must correspond to the
current usage of the vehicle (empty,
carrying a load, motorway driving, etc.).
This function is an addi-
tional driving aid.
However, the function does
not take the place of the
driver. It cannot, therefore, under
any circumstances replace the vig-
ilance or the responsibility of the
driver.
Check the tyre pressures, including
the emergency spare wheel, once a
month.

2.24
SYSTEM B (cntd.)
Readjustment of tyre pressures
The tyre pressures must be adjusted
when cold (please refer to the label lo-
cated on the edge of the driver’s door).
If tyre pressures cannot be checked
when the tyres are cold, the recom-
mended pressures must be increased
by 0.2 to 0.3 bar (3 PSI).
Never deflate a hot tyre.
TYRE PRESSURE LOSS WARNING (9/9)
Replacing wheels/tyres
This system requires specific equip-
ment (wheels, tyres, hubcaps, etc.).
Please see the information on “Tyres”
in Section 5.
Contact an approved Dealer to fit new
tyres and to find out about available ac-
cessories compatible with the system
and available from your dealer net-
work: the use of any other accessory
could affect the correct operation of the
system or damage a sensor.
Emergency spare wheel
If the vehicle is equipped with an emer- -
gency spare wheel, it will not have a
sensor. When it is fitted on the vehicle,
the warning light
 flashes for sev-
eral seconds, then stays on, together
with the warning light
©.
Tyre repair product and inflation kit
Because the valves are specially desi-
gned, only use equipment approved by
the approved network. Please refer to
“Tyre inflation kit” in Section 5.