2021-2022 Citroen C1 Alarm System Instructions
Introduction
The 2021-2022 Citron C1 is a great car for driving in small cities, and its alarm system shows that it takes safety and security very seriously. The C1’s alarm system is made to give the car and its people an extra layer of defense. This gives you peace of mind in busy cities and elsewhere. This high-tech security feature is designed to find illegal access, break-in attempts, and even possible threats. It alerts the owner right away and scares away would-be thieves. The alarm system works well with the keyless entry and immobilizer functions of the car. Together, they make a strong barrier against theft and unauthorized use. As cities have their own challenges, the C1’s alarm system shows how much it cares about protecting its passengers and their things. It also improves the driving experience by putting innovation, convenience, and safety all in one small package.
Alarm
System which protects and provides a deterrent against theft and break-ins. 
Access System which protects and provides a deterrent against theft and break-ins. Self-protection function The system checks for any malfunction in its components. The alarm is triggered if the battery, button or siren wiring is disconnected or damaged. For all work on the alarm system, contact a CITROËN dealer or a qualified workshop.
Exterior Perimeter
The system checks whether the vehicle is opened. The alarm is triggered if anyone tries to open one of the doors or the bonnet.
Volumetric
(without partition)
The system checks for any variation in volume in the passenger compartment. The alarm is triggered if anyone breaks a window, enters the passenger compartment or moves inside the vehicle.
(with partition)
The system only checks for a variation in volume inside the cab. The alarm is triggered if anyone breaks a window or enters the vehicle’s cab. It will not be triggered if someone enters the loading area. If your vehicle is fitted with an Additional heating/ventilation system, interior volumetric monitoring is not compatible with it. For more information on the Additional heating/ventilation system, refer to the corresponding section.
Anti-Tilt
The system checks for any change in the attitude of the vehicle. The alarm is triggered if the vehicle is lifted or moved. When the vehicle is parked, the alarm will not be triggered if the vehicle is knocked.
Locking the vehicle with full alarm system
Activation
Switch off the ignition and exit the vehicle. Lock the vehicle using the remote control or with the “Keyless Entry and Start” system. The monitoring system is active: the red indicator lamp in the button flashes every second and the direction indicators come on for about 2 seconds.
- Following an instruction to lock the vehicle, the exterior perimeter monitoring is activated after 5 seconds and the interior volumetric and anti-tilt monitoring after 45 seconds.
- If a door, the tailgate or the bonnet is not closed properly, the vehicle is not locked but the exterior perimeter monitoring will be activated after 45 seconds at the same time as the interior volumetric and anti-tilt monitoring.
Deactivation
- Press the remote control unlocking button. or
- Unlock the vehicle with the “Keyless Entry and Start” system. The monitoring system is deactivated: the indicator lamp in the button goes off and the direction indicators flash for about 2 seconds.
If the vehicle automatically locks itself again (as happens if a door or the boot is not opened within 30 seconds of unlocking), the monitoring system is also reactivated automatically.
Locking the vehicle with exterior perimeter monitoring only
Deactivate the interior volumetric and anti-tilt monitoring to avoid the unwanted triggering of the alarm, in certain cases such as:
- Slightly open window or sunroof.
- Washing the vehicle.
- Changing a wheel.
- Towing the vehicle.
- Transport on a ship or ferry.
Deactivating the interior volumetric and anti-tilt monitoring
- Switch off the ignition and within 10 seconds press the alarm button until its red indicator lamp is on fixed. Get out of the vehicle.
- Immediately lock the vehicle using the remote control or the “Keyless Entry and Start” system. Only the exterior perimeter monitoring is activated; the button’s red indicator lamp flashes once every second.
To be taken into account, the deactivation must be carried out every time the ignition is switched off.
Reactivating the interior volumetric and anti-tilt monitoring
- Deactivate the exterior perimeter monitoring by unlocking the vehicle using the remote control or the “Keyless Entry and Start” system. The indicator lamp in the button goes off. Reactivate all monitoring by locking the vehicle using the remote control or the “Keyless Entry and Start” system. The red indicator lamp in the button once again flashes every second.
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Triggering of the Alarm
- This is indicated by sounding of the siren and flashing of the direction indicators for 30 seconds. Depending on the country of sale, certain monitoring functions remain active until the alarm has been triggered eleven times consecutively. When the vehicle is unlocked using the remote control or the “Keyless Entry and Start” system, rapid flashing of the indicator lamp in the button informs you that the alarm was triggered during your absence. When the ignition is switched on, this flashing stops immediately. Failure of the remote control
To deactivate the monitoring functions:
- Unlock the vehicle using the key in the front left-hand door lock. Open the door; the alarm is triggered. Switch on the ignition; this stops the alarm. The indicator lamp in the button goes off.
Locking the vehicle without activating the alarm
- Lock or deadlock the vehicle using the key (built-in the remote control) in the driver’s door lock.
Malfunction When the ignition is switched on, the fixed lighting of the red indicator lamp in the button indicates a system malfunction. Have it checked by a CITROËN dealer or a qualified workshop.
Automatic activation (Depending on version) The system is activated automatically 2 minutes after the last door or the boot is closed. To avoid triggering the alarm on entering the vehicle, first press the unlocking button on the remote control or unlock the vehicle using the “Keyless Entry and Start” system.
FAQs
The Citroen C1 Alarm System is a high-tech security system made to guard your car against intrusion and probable theft. It makes use of a variety of sensors and technologies to warn you of any shady activity near your car.
The system has features including perimeter security, internal motion detection, a loud alarm, and a flashing LED warning, among others. Together, these measures prevent unauthorized entry into your car and alert you to any such efforts.
The perimeter defense feature employs sensors positioned all around the car to look for any efforts to access the doors, hood, or trunk. The alarm will sound if a breach is found, notifying you and anybody around.
The Citroen C1 Alarm System may be remotely controlled, yes, using the key fob for the car. The alarm can be set off and on, and in an emergency, panic mode can be turned on.
In the event of an emergency, panic mode activates the alarm system, activates the horn, and flashes the lights. If you feel endangered or in need of support, it may be beneficial to draw attention to yourself.
The technology is built to distinguish between deliberate breaches and unintentional triggers. Accidental triggers, like a powerful wind gust, are less likely to cause the alarm to go off.
To lessen the likelihood of false alarms, some models could let you change the sensitivity of the interior motion detection.
The Citroen C1 Alarm System effectively deters theft and unlawful access, yet no system can ensure total prevention. Potential thieves find it less alluring because of its loud alert and attention-grabbing features.
The system has anti-tamper features that make it challenging for thieves to turn it off. The alarm will also sound if someone tries to unintentionally unplug the battery or tamper with the wiring.
A backup power source is included into the alarm system in case the car’s battery is unplugged or runs out. This ensures that it will still function.
Check the warranty documentation that Citroen has provided for details regarding the alarm system as warranty coverage can vary.
Some versions might support smartphone connectivity, enabling you to monitor and manage the alarm system from a distance via a specific app.
Usually, you can turn off the alarm by using the key fob or the actual key to unlock the car. By doing so, the system will be disarmed, enabling you to start the car.
To avoid exhausting the battery, the alarm system is built to use the least amount of power possible. However, it’s a good idea to disconnect the battery if you want to leave the car idle for a long time to avoid any potential drain.
You might be possible to have the alarm system installed after buying the car, depending on the dealership and the accessories they have available. For more information, it is advised to contact the dealership’s service department.
Useful Links
View Full PDF: Citroen C1 2021-2022 User Manual| Auto User Guide
2021-2022 Citroen C1 Keys Instruction Guide