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Driving -> Hill start assist for Your Citroen C4 Cactus SUV Second Generation (2018-2024)

Driving  
The system adapts its gear shift  
recommendation according to the driving  
conditions (slope, load, etc.) and the driver’s  
requirements (request for power, acceleration,  
braking, etc.).  
lamp P in the electric parking brake control  
lever are on fixed.  
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The hill start assist function cannot be  
deactivated. However, use of the parking  
brake to immobilise the vehicle interrupts its  
operation.  
The system never suggests:  
– engaging first gear.  
– engaging a lower gear.  
– engaging reverse.  
Operation  
Facing downhill, with the vehicle stationary  
and reverse gear engaged, the vehicle is held  
for a short time when you release the brake  
pedal.  
With a manual gearbox, the arrow may  
be accompanied by the recommended  
gear. The system always suggests changing  
to a higher gear when this is necessary.  
Malfunction  
This warning lamp comes on in the event  
of a malfunction, accompanied by an  
onscreen message.  
Hill start assist  
This system keeps your vehicle briefly stationary  
(for approximately 2 seconds) when making a hill  
start, while you transfer your foot from the brake  
pedal to the accelerator pedal.  
This system is only active when:  
– the vehicle is completely stationary, with your  
foot on the brake pedal,  
Contact a CITROËN dealer or a qualified  
workshop to have the system checked.  
Facing uphill, with the vehicle stationary,  
the vehicle is held for a short time when you  
release the brake pedal:  
– provided you are in first gear or neutral with a  
manual gearbox.  
Tyre under-inflation  
detection  
This system automatically checks the pressures  
of the tyres while driving.  
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.  
– provided you are in mode D or M with an  
automatic gearbox.  
– certain slope conditions are met,  
– the driver’s door is closed.  
Do not leave the vehicle while it is being  
held temporarily by hill start assist.  
If someone needs to get out of the vehicle  
with the engine running, apply the parking  
brake manually. After that, ensure that the  
parking brake indicator lamp and the indicator  
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