Driving -> Under-inflation detection for Your DS 3 Crossback 4 Door First Generation (2018-2022)

93  
Driving  
06  
Restarting the engine (START mode)  
The vehicle stalls in STOP mode  
Driving with under-inflated tyres, particularly  
in adverse conditions (heavy load, high speed,  
long journey):  
The engine automatically restarts as soon as the  
driver indicates the intention of moving off again.  
►ꢀ With a manual gearbox: with the clutch pedal  
fully depressed.  
►ꢀ With an automatic gearbox:  
• With the selector in position D or M: with the  
brake pedal released.  
• With the selector in position N and the brake  
pedal released: with the selector at D or M.  
• With the selector in position P and the brake  
pedal depressed: with the selector at R, N, D  
or M.  
All of the instrument panel warning lamps come  
on if there is a fault.  
►ꢀ Switch off the ignition then start the engine  
again with the "START/STOP" button.  
– worsens road-holding.  
– lengthens braking distances.  
– causes premature wear of the tyres.  
– increases fuel consumption.  
The Stop & Start system requires a 12 V  
battery of specific technology and  
specification.  
All work concerning the battery must be  
carried out only by a dealer or a qualified  
workshop.  
The inflation pressures defined for the  
vehicle can be found on the tyre pressure  
label.  
For more information on the Identification  
markings, refer to the corresponding section.  
• Reverse gear engaged.  
Under-inflation detection  
Checking tyre pressures  
Special cases  
This system automatically checks the pressures  
of the tyres while driving.  
This check should be done when the  
tyres are "cold" (vehicle stopped for 1 hour or  
after a journey of less than 6 miles (10 km) at  
moderate speeds).  
Otherwise, add 0.3 bar to the pressures shown  
on the label.  
The engine restarts automatically if all the  
operating conditions are met again and in the  
following cases.  
– With a manual gearbox: vehicle speed exceeds  
2.5 mph (4 km/h),  
It compares the information given by the wheel  
speed sensors with reference values, which must  
be reinitialised every time the tyre pressures are  
adjusted or a wheel changed.  
The system triggers an alert as soon as it detects  
a drop in the inflation pressure of one or more  
tyres.  
– With an automatic gearbox, in mode N, vehicle  
speed exceeds 0.6 mph (1 km/h).  
Under-inflation alert  
In these cases, this indicator lamp flashes  
for a few seconds, then goes off.  
This is signalled by the fixed illumination of  
this warning lamp, accompanied by an  
Under-inflation detection does not replace  
the need for vigilance on the part of the  
driver.  
This system does not avoid the need to  
regularly check the tyre pressures (including  
the spare wheel) as well as before a long  
journey.  
Malfunctions  
audible signal and, depending on equipment, the  
display of a message.  
►ꢀ Reduce speed immediately, avoid excessive  
steering movements and avoid sudden braking.  
►ꢀ Stop the vehicle as soon as it is safe to do so.  
In the event of a malfunction, this warning  
lamp flashes for a few moments, then  
remains on, accompanied by an onscreen  
message.  
Have the vehicle checked by a dealer or a qualified  
workshop.  
94  
Driving  
06  
The loss of pressure detected does not  
always cause visible bulging of the tyre.  
Do not rely on just a visual check.  
Snow chains  
anticipate their movements before indicating  
and changing lane.  
The systems cannot exceed the limits of the  
laws of physics.  
The system does not have to be  
reinitialised after fitting or removing snow  
chains.  
►ꢀ Using a compressor, such as the one in  
the temporary puncture repair kit, check the  
pressures of the four tyres when cold.  
►ꢀ If it is not possible to make this check  
immediately, drive carefully at reduced speed.  
►ꢀ In the event of a puncture, use the temporary  
puncture repair kit or the spare wheel (depending  
on equipment).  
Driving aids  
Malfunction  
You should hold the steering wheel  
with both hands, always use the interior and  
exterior rear view mirrors, always keep the feet  
close to the pedals and take a break every two  
hours.  
These warning lamps come on in  
the event of a malfunction.  
A message appears, accompanied by an audible  
signal.  
In this case, the tyre under-inflation monitoring  
function is no longer performed.  
Have the system checked by a dealer or a  
qualified workshop.  
The alert is kept active until the system is  
reinitialised.  
Manoeuvring aids  
The driver must always check the  
surroundings of the vehicle before and during  
the whole manoeuvre, in particular using the  
mirrors.  
Reinitialisation  
The system must be reinitialised after any  
adjustment to the pressure of one or more tyres,  
and after changing one or more wheels.  
Driving and manoeuvring  
aids - General  
recommendations  
Driving and manoeuvring aids cannot, in  
any circumstances, replace the need for  
vigilance on the part of the driver.  
The driver must comply with the Highway  
Code, must remain in control of the vehicle in  
all circumstances and must be able to retake  
control of it at all times. The driver must adapt  
the speed to climactic conditions, traffic and  
the state of the road.  
Radar  
The operation of the radar as well as the  
associated functions may be impaired through  
the accumulation of dirt (mud, frost, etc.),  
in certain difficult weather conditions (very  
heavy rain, snow) or if the bumper is damaged.  
If the front bumper is to be repainted, contact  
a dealer or a qualified workshop; certain types  
of paint could interfere with the operation of  
the radar.  
Before reinitialising the system, make  
sure that the pressures of the four tyres  
are correct for the conditions of use of the  
vehicle and conform to the values written on  
the tyre pressure label.  
Check the pressures of the four tyres before  
performing the reinitialisation.  
The system does not advise if a pressure is  
incorrect at the time of reinitialisation.  
With the vehicle stationary, the system is  
reinitialised via the Driving / Vehicle touch  
screen menu..  
It is the driver's responsibility to constantly  
check the traffic, to assess the relative  
distances and speeds of other vehicles and to