engine CITROEN C4 AIRCROSS 2021 Handbook (in English)

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Stop & Start (Auto Stop & Go) system
Operation
Going into engine STOP mode
The "AS &G" warning lamp comes on in the instrument panel or the instrument panel screen and the engine goes into standby after a few seconds:
- with a manual gearbox , with the vehicle stationary and your foot on the brake, when you put the gear lever into neutral and release the clutch pedal.
Never refuel with the engine in STOP mode; you must switch off the ignition with the key or the START/STOP button.
When the engine is stopped automatically, the operation of certain vehicle systems, such as for example, braking, power steering... are modified. Ta k e c a r e.
Special cases: STOP mode not available
STOP mode is not invoked when: - the driver's seat belt is not fastened, - the driver's door is open, - the bonnet is open, - the minimum time period of 30 seconds since starting the engine has not elapsed, - the vehicle has not exceeded 3 mph (5 km/h) since the last engine start, - the vehicle has restarted less than 10 seconds ago, - the engine is needed to maintain a comfortable temperature in the passenger compartment, - demisting is active, - some special conditions (battery charge, engine temperature, braking assistance, ambient temperature...) where the engine is needed to assure control of a system.
- the "AS &G" warning lamp is flashing in the instrument panel.
This operation is perfectly normal.
The Stop & Start (Auto Stop & Go) system puts the engine temporarily into standby during stops in the traffic (red lights, traffic jams, or other...). The engine restarts automatically as soon as you want to move off. The restart takes place instantly, quickly and silently. Per fect for urban use, the Stop & Start (Auto Stop & Go) function reduces fuel consumption and exhaust emissions as well as the noise level when stationary.
If you move the gear lever, the "AS &G"warning lamp flashes, accompanied by an audible signal. The alert stops as soon as the gear lever is returned to the neutral position.

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Going into engine START mode
The "AS &G" warning lamp goes off and the engine starts automatically:
- with a manual gearbox , when you fullydepress the clutch pedal.
For safety reasons or to ensure smooth operation, START mode is invoked automatically when:
Special cases: START invoked automatically
- the speed of the vehicle exceeds 2 mph (3 km/h) , - you open the driver's door, - you unfasten the driver's seatbelt, - some special conditions (battery charge, engine temperature, braking assistance, ambient temperature...) where the engine is needed to assure control of a system.
If the system has been deactivated in STOP mode, the engine will not start.
At any time, press the "AS &G O FF " switch to deactivate the system.
Deactivation
In this case the "AS &G" warning lamp flashes for few seconds, then goes off.
This operation is perfectly normal.
This is confirmed by the "AS &G O FF " warning lamp coming on in the instrument panel or instrument panel screen.
If the bonnet is opened while the engine is in standby, the "AS &G" warning lamp flashes, accompanied by an audible signal. The engine will not restart automatically. To restart the engine with the bonnet
open, use the ignition key or press the START/STOP button, while pressing fully on the brake and clutch pedals.

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The system is reactivated automatically at every new start using the key or the START/STOP button.
Reactivation
Press the "AS &G O FF " switch again. The system is active again; this is confirmed by the "AS &G O FF " warning lamp going off in the instrument panel or instrument panel screen.
Operating fault
In the event of a malfunction with the system, the "AS &G O FF " warning lamp flashes in the instrument panel or instrument panel screen, and the system no longer operates. Have it checked by a CITROËN dealer or a qualified workshop.
This system requires a specific battery with a special specification and technology (reference numbers available from a CITROËN dealer or a qualified workshop).
Fitting a battery not listed by CITROËN introduces the risk of malfunction of the system.
Maintenance
The "Auto Stop & Go" system makes use of advanced technology. All work on this type of battery must be done only by a CITROËN dealer or a qualified workshop.
In the event of a fault in STOP mode, the vehicle may stall. The following warning lamps come on in the instrument panel or instrument panel screen:
It is then necessary to switch off the ignition, then restart the engine using the key or the
START/STOP button.

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Avoid prolonged contact of used oil or
fluids with the skin. Most of these fluids are harmful to health or indeed very corrosive.
Do not discard used oil or fluids into sewers or onto the ground. Take used oil to a CITROËN dealer or a qualified workshop (France) or to an authorised waste disposal site.
Used products
Topping up
The reservoir must be topped up without delay by a CITROËN dealer or a qualified workshop.
Additive level
(1.6 HDi 110 Diesel versions
with particle filter)
The additive reservoir low level is indicated by the display of this message.
Fluid specifi cation
For optimum cleaning, this fluid must not be topped up with or replaced with plain water.
Screenwash and headlamp
wash fluid
To check or top up the fluid, stop the vehicle, apply the parking brake and switch off the engine.
 Open the bonnet and secure it with the stay.  Open the filler cap for the screenwash reservoir.  Check the level using the gauge, then top-up if necessary.  Refit the cap on the reservoir and close the bonnet.
In wintry conditions, the use of fluid with an ethyl alcohol or methanol base is recommended.

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Technical data
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* The maximum power corresponds to the value type-approved on a test bed, under conditions defined in European legislation (Directive 1999/99/EC).
Engines and gearboxes
.../S : model fitted with the Stop & Start (AS&G) function.
PETROL ENGINES1.6 litre 1152.0 litre 150
Model codes: BU...NKZ0 NKZ0/SNK Z9 NKZ9/SAFYR AFZ7AFY V AFZM
AFYT AFZH AFZ9
AFYW AFZP AFZC
Transmission mode2WD2WD2WD4WD2WD4WD
Cubic capacity (cc) 1 590 1 998
Bore x stroke (mm) 75 x 90 86 x 86
Max power * : EU standard (kW) 86 113
Max power engine speed (rpm) 6 000 6 000
Max torque: EU standard (Nm) 15 4 19 9
Max torque engine speed (rpm) 4 000 4 200
Fuel Unleaded Unleaded
Catalytic converter Ye s Ye s
GEARBOXES Manual (5-speed) CVT (6-speed) Manual (5-speed) CVT (6-speed)
OIL CAPACITY (in litres)
Engine (with filter replacement) 4.2 4.3

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Petrol weights and towed loads (kg)
The values for maximum towed weights type approved according to the sales zone (see the tables on the following pages). The exact values are given in your vehicle's registration document as well as on the manufacturer's plate. They are also mentioned in sales brochures. For more details, contact a CITROËN dealer or
a qualified workshop.
The kerb weight is equal to the unladen weight + driver (75 kg). The GTW and towed load values indicated are valid up to a maximum altitude of 1 000 metres; the towed load mentioned must be reduced by 10 % for each additional 1 000 metres of altitude. The speed of a towing vehicle must not exceed 60 mph (100 km/h) (comply with the legislation in force in your country).
High ambient temperatures may result in a reduction in the per formance of the vehicle to protect the engine; if the ambient temperature is above 37 °C, limit the towed load.
The weight of the braked trailer can be increased, within the GTW limit, if the GV W of the towing vehicle is reduced by an equal amount. Please note that towing using a lightly loaded towing vehicle may have an adverse effect on its road holding.

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Technical data
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For zones: Europe, Turkey, French overseas dominions and territories.
PETROL ENGINES -
Gearboxes-
Model codes: BU...-
Transmission mode -
- Unladen weight -
- Kerb weight -
- Gross vehicle weight (GV W) -
- Gross vehicle weight (GV W) when towing -
- Gross train weight (GTW) on a 12% gradient -
- Braked trailer (within GTW limit) on a 10% or 12% gradient -
- Unbraked trailer -
- Recommended nose weight -

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Technical data
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For: Russia, Ukraine, Morocco, Argentina, Chile, French overseas territories.
PETROL ENGINES1.6 litre 1152.0 litre 150
GearboxesManual (5 - speed)Manual (5-speed)CVT (6- speed)
Model codes: BU...NKZ7 NKZ0AFZ7AFZMAFZH AFZ9AFZP AFZC
Transmission mode2WD2WD4WD2WD4WD
- Unladen weight 1 310 1 355 1 420 1 385 1 450
- Kerb weight 1 385 1 430 1 495 1 460 1 525
- Gross vehicle weight (GV W) 1 870 1 970 1 970 1 970 1 970
- Gross vehicle weight (GV W) when towing 1 925 2 035 2 035 2 035 2 035
- Gross train weight (GTW) on a 12% gradient 3 025 3 335 3 335 3 335 3 335
- Braked trailer (within GTW limit) on a 10% or 12% gradient 1 100 1 300 1 300 1 300 1 300
- Unbraked trailer 685 715 74 5 725 750
- Recommended nose weight 55 65 65 65 65

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Technical data
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For: Australia, New-Zealand.
PETROL ENGINES2.0 litre 150
GearboxesManual (5-speed)CVT (6- speed)
Model codes: BU...AFZ7AFZMAFZHAFZP
Transmission mode2WD4WD2WD4WD
- Unladen weight 1 350 1 415 1 380 1 445
- Kerb weight 1 425 1 490 1 455 1 520
- Gross vehicle weight (GV W) 1 970 1 970 1 970 1 970
- Gross vehicle weight (GV W) when towing 2 035 2 035 2 035 2 035
- Gross train weight (GTW) on a 12% gradient 3 020 3 020 3 020 3 020
- Braked trailer (within GTW limit) on a 10% or 12% gradient 1 050 1 050 1 050 1 050
- Unbraked trailer 750 750 750 750
- Recommended nose weight 65 65 65 65

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For: South Africa.
PETROL ENGINES2.0 litre 150
GearboxesManual (5-speed)CVT (6- speed)
Model codes: BU...AFYRAFYVAFYTAFYW
Transmission mode2WD4WD2WD4WD
- Unladen weight 1 350 1 415 1 390 1 455
- Kerb weight 1 425 1 490 1 465 1 530
- Gross vehicle weight (GV W) 1 970 1 970 1 970 1 970
- Gross vehicle weight (GV W) when towing 2 035 2 035 2 035 2 035
- Gross train weight (GTW) on a 12% gradient 3 075 3 075 2 760 2 760
- Braked trailer (within GTW limit) on a 10% or 12% gradient 1 050 1 050 750 750
- Unbraked trailer 1 050 1 050 750 750
- Recommended nose weight 65 65 65 65