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EnglishDriving -> Starting / Switching off the engine with the key (Keyless) for your Citroen C5 Aircross 2017-2025
Driving
F Insert the key into the ignition switch; the
system recognises the code.
F Unlock the steering column by
simultaneously turning the steering wheel
and the key.
Anti-theft protection
Avoid attaching heavy objects to the key
or the remote control, which would weigh
down on its blade in the ignition switch
and could cause a malfunction.
Electronic immobiliser
The keys include an electronic engine
immobiliser system, whose secret code must
be recognised in order for starting to be
possible.
If the system malfunctions, indicated by the
display of a message, the engine will not start.
Contact the CITROËN dealer.
In certain cases, you may have to apply
significant force to move the steering
wheel (wheels on full lock, for example).
Ignition on position
It allows the use of the vehicle's electric
equipment or portable devices to be charged.
Once the state of charge of the battery drops
to the reserve level, the system switches to
energy economy mode: the power supply is
cut off automatically to preserve the remaining
battery charge.
F With a petrol engine, operate the starter
motor by turning the key to position
3 without pressing the accelerator pedal,
until the engine starts. Once the engine
starts, release the key.
Starting/Switching off the
engine with the key
Key ignition switch
With petrol engines, after a cold start,
preheating the catalytic converter can
cause noticeable engine vibrations for
anything up to 2 minutes while stationary
with the engine running (accelerated idle
speed).
Switching off the engine leads to a loss of
braking assistance.
Starting the engine
Parking brake applied:
F With a manual gearbox, place the gear
lever in neutral then depress the clutch
pedal fully.
F With an automatic gearbox, place the gear
selector in mode N or P then depress the
brake pedal fully.
F With a Diesel engine, turn the key to
position 2, ignition on, to operate the engine
pre-heating system.
It has 3 positions:
-
position 1 (Stop): inserting and removing
the key, steering column locked.
position 2 (Ignition on): steering column
unlocked, ignition on, Diesel preheating,
engine running,
-
-
position 3 (Starting).
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Driving
Wait until this warning lamp goes off
in the instrument panel, then operate
the starter motor by turning the key
to position 3 without pressing the
accelerator pedal, until the engine
starts. Once the engine starts,
release the key.
Energy economy mode
Switching off the engine
After switching off the engine (position 1
F Stop the vehicle.
F With the engine running at idle, turn the key
to position 1.
F Remove the key from the ignition switch.
F To lock the steering column, turn the
steering wheel until it locks.
- Stop), for a maximum of 30 minutes you
can still use functions such as the audio and
telematic system, the wipers, dipped beam
headlamps, courtesy lamps, etc.
In wintry conditions, the warning lamp
may stay on for a longer period. When the
engine is hot, the warning lamp does not
come on.
To facilitate unlocking of the steering
column, it is recommended that the
wheels be returned to the straight ahead
position before switching off the engine.
For more information on Energy
economy mode, refer to the
corresponding section.
If the engine does not start straight away,
switch off the ignition. Wait a few seconds
before operating the starter motor again.
If the engine does not start after several
attempts, do not keep trying: you risk
damaging the starter motor and the
engine. Contact a CITROËN dealer or
a qualified workshop.
Key left in
F Check that the parking brake is correctly
If the key has been left in the ignition
switch at position 2 (Ignition on), the
ignition will be switched off automatically
after one hour.
To switch the ignition back on, turn the key
to position 1 (Stop), then back to position
2 (Ignition on).
applied, particularly on sloping ground.
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Never switch off the ignition before the
vehicle is at a complete stop. With the
engine off, the braking and steering
assistance systems are also cut off: risk of
loss of control of the vehicle.
In mild conditions, do not leave the engine
at idle to warm up but move off straight
away and drive at moderate speed.
When you leave the vehicle, keep the key
with you and lock the vehicle.
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Driving
F Press the "START/STOP" button while
maintaining pressure on the pedal until the
engine starts.
Switching off the engine
Starting/Switching off the
engine with Keyless Entry
and Starting
F Immobilise the vehicle, engine at idle.
F With a manual gearbox, ideally put the
gear lever into neutral.
F With an automatic gearbox, ideally select
mode P or N.
For Diesel engines, when the temperature is
below zero and/or the engine is cold, starting
will only occur once the preheater warning
lamp is off.
The electronic key must be present in the
passenger compartment.
If it is not detected, a message is
displayed.
Move the electronic key so that the engine
can be started or stopped.
If there is still a problem, refer to the "Key
not detected – Back-up starting or Back-
up switch-off " section.
F Press the "START/STOP" button.
If this warning lamp comes on after
pressing the "START/STOP" button:
In some circumstances, it is necessary to turn
the steering wheel to lock the steering column.
On certain versions with the EAT8 automatic
gearbox, the steering column does not lock, but
the gearbox locks in mode P.
F You should keep the pedal fully depressed
and not press the "START/STOP" button
again until the engine is running.
If one of the starting conditions is not met, a
message is displayed.
Starting the engine
In some circumstances, you are alerted by
a message that it is necessary to turn the
steering wheel while pressing the "START/
STOP" button, to help unlock the steering
column.
If the vehicle is not immobilised, the
engine will not stop.
Never leave your vehicle with the
electronic key still inside.
With petrol engines, after a cold start,
preheating the catalytic converter can
cause noticeable engine vibrations for
anything up to 2 minutes while stationary
with the engine running (accelerated idle
speed).
Switching off the engine leads to a loss of
braking assistance.
F With a manual gearbox, place the gear
lever in neutral and depress the clutch pedal
fully.
or
F With an automatic gearbox, select mode P
or N and press the brake pedal.
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Driving
In the event of a fault with the electronic key,
contact a CITROËN dealer or a qualified
workshop.
Switching the ignition on
without starting
Emergency switch-off
In the event of an emergency only, the engine
can be switched off without conditions (even
when driving).
Press the "START/STOP" button for about
5 seconds.
In this case, the steering column locks as soon
as the vehicle stops.
F Place and hold the remote control against
the reader.
With the electronic key inside the vehicle,
pressing the "START/STOP" button, without
pressing any of the pedals, allows the
ignition to be switched on without starting the
engine (turning on the instrument panel and
accessories such as the audio system and the
lighting).
F With a manual gearbox, place the gear
lever in neutral, then fully depress the clutch
pedal.
On certain versions with the EAT8 automatic
gearbox, the steering column does not lock.
F With an automatic gearbox, select mode
P, then fully depress the brake pedal.
Electric parking brake
F Press the "START/STOP" button.
The engine starts.
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In automatic mode, this system applies the
parking brake when the engine is switched off
and releases it when the vehicle moves off.
F Press this button again to switch off the
ignition and allow the vehicle to be locked.
Back-up switch-off
When the electronic key is not detected or is
no longer in the recognition zone, a message
appears in the instrument panel when closing
a door or trying to switch off the engine.
F To confirm the instruction to switch off the
engine, press the "START/STOP" button for
about five seconds.
Key not detected
Back-up starting
A back-up reader is fitted to the steering
column to allow the engine to be started if
the system does not detect the key in the
recognition zone, or when the battery in the
electronic key is discharged.
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