2010 Citroen DS3 DAG key battery

Following disconnection of the vehicle battery,
replacement of the remote control battery or in the event of a remote control malfunction, you can no longer unlock, lock or locate your vehicle.  First of all, use the key in the lock to unlock or lock your vehicle.  Then, reinitialise the remote control. If the problem persists, contact a CITROËN dealer as soon as possible.
Remote control problem
Reinitialisation
 Switch off the ignition.  Turn the key to position 2 (Ignition) .  Press the closed padlock immediately for a few seconds.  Switch off the ignition and remove the key from the ignition switch. The remote control is fully operational again.
Changing the battery
Battery ref.: CR1620/3 volts. This replacement battery is available from CITROËN dealers.
 Maintain pressure on lug A and remove the chrome finisher by sliding it off at 45°.  Unclip the casing by inser ting a coin at the
notch and rotating.  Slide the flat battery out of its location.  Slide the new battery into its location obser ving the original direction.  Clip the casing in place, then the chrome finisher.  Reinitialise the remote control.
If the battery is flat, you are informed by lighting of this warning lamp in the instrument panel, an audible signal and a message on the multifunction screen.
 Unfold the key.  Release the chrome finisher by pressing on
lug A .

Activation
 Press button A for more than two seconds. A confirmation message appears on the multifunction screen, accompanied by an audible signal.
Deactivation
 Press button A again for more than two seconds. A confirmation message appears on the multifunction screen, accompanied by an audible signal.
To lock or unlock the doors mechanically in the event of a central locking system failure or flat battery.
Emergency control
Locking the driver's door
 Inser t the key in the lock, then turn it to the right.
Unlocking the driver's door
 Inser t the key in the lock, then turn it to the left.
Locking the passenger's door
 Remove the black cap, on the edge of the door, using the key.  Inser t the key in the cavity, then turn it fully.  Remove the key and refit the cap.
Unlocking the passenger's door
 Pull the interior door opening control.
In the event of a fault with the central locking system, you must disconnect the battery to lock the boot and so ensure the complete locking of the vehicle.

93Access
Boot
Opening
 After unlocking the vehicle using the remote control or the key, pull the handle and raise the tailgate.
Closing
 Lower the tailgate using the interior grab handle.
If the tailgate is not closed correctly:
- when the engine is running , this warning lamp comes on, accompanied by a message on the multifunction screen for a few seconds,
- when the vehicle is moving (speed above 6 mph (10 km/h)), this warning lamp comes on, accompanied by an audible signal and a message on the multifunction screen for a few seconds.
System for mechanical unlocking of the boot in the event of a battery or central locking malfunction.
Tailgate release
Unlocking
 Fold back the rear benchseat to gain access to the lock from inside the boot.  Inser t a small screwdriver into hole A of the lock to unlock the tailgate.

153Driving
Stop & Start
The Stop & Star t system puts the engine temporarily on standby - STOP mode - during stops in the traffic (red lights, traffic jams, or other...). The engine restar ts automatically - START mode - as soon as you want to move off. The restar t takes place instantly, quickly and silently. Per fect for urban use, the Stop & Star t system reduce s fuel consumption and exhaust emissions as well as off ering the comfor t of silence when stationary.
Operation
Going into engine STOP mode
For your comfor t when parking, STOP mode is not available for a few seconds after coming out of reverse gear. STOP mode does not affect the functionality of the vehicle, such as braking, power steering, for example.
Never refuel with the engine in STOP mode; you must switch off the ignition with the key.
The "ECO" warning lamp comes on in the instrument panel and the engine goes into standby:
- with a manual gearbox , at speeds below 12 mph (20 km/h), put the gear lever into neutral, then release the clutch pedal,
A time counter calculates the sum of the periods in STOP mode during a journey. It rests itself to zero every time the ignition is switched on with the key.
STOP mode is not invoked when: - the driver's door is open, - the driver's seat belt is not fastened, - the vehicle has not exceeded 6 mph (10 km/h) since the last engine star t using the key, - the engine is needed to maintain a comfor table temperature in the passenger compar tment, - 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.
Special cases: STOP mode unavailable
The "ECO" warning lamp flashes for a few seconds, then goes off.
This operation is per fectly normal.

155Driving
The system is reactivated automatically at every new star t using the key.
Reactivation
This system requires a battery with a special specification and technology (reference numbers available from CITROËN dealers). Fitting a battery not listed by CITROËN introduces the risk of malfunction of the system. In the event of a malfunction with the system, the "ECO OFF" switch warning lamp flashes, then comes on continuously. Have it checked by a CITROËN dealer. In the event of a fault in STOP mode, the vehicle may stall. It is then necessary to switch off the ignition and star t the engine again using the key.
Operating fault Maintenance
Before working under the bonnet, deactivate the Stop & Star t system to avoid any risk of injury resulting from automatic operation of START mode.
The Stop & Star t system makes use of advanced technology. Specialist knowledge is needed for any work on the system, which can only be assured
by CITROËN dealers.
Press the "ECO OFF" switch again. The system is active again; this is confirmed
by the switch warning lamp going off, accompanied by a message on the screen.

Load reduction mode System which manages the use of cer tain functions according to the level of charge remaining in the battery. When the vehicle is being driven, the load reduction function temporarily deactivates cer tain functions, such as the air conditioning,
the heated rear screen... The deactivated functions are reactivated automatically as soon as conditions permit.
Do not disconnect the terminals while the engine is running. Do not charge the batteries without disconnecting the terminals first.
Before disconnecting the battery
Wait 2 minutes after switching off the ignition before disconnecting the battery. Close the windows and the doors before disconnecting the battery.
Following reconnection of the battery
Following reconnection of the battery, switch on the ignition and wait 1 minute before star ting to permit initialisation of the electronic systems. However, if minor problems persist following this operation, contact a CITROËN dealer. Referring to the corresponding section,
you should yourself reinitialise: - the remote control key, - the GPS satellite navigation system.

Load reduction mode System which manages the use of cer tain functions according to the level of charge remaining in the battery. When the vehicle is being driven, the load reduction function temporarily deactivates cer tain functions, such as the air conditioning,
the heated rear screen... The deactivated functions are reactivated automatically as soon as conditions permit.
Do not disconnect the terminals while the engine is running. Do not charge the batteries without disconnecting the terminals first.
Before disconnecting the battery
Wait 2 minutes after switching off the ignition before disconnecting the battery. Close the windows and the doors before disconnecting the battery.
Following reconnection of the battery
Following reconnection of the battery, switch on the ignition and wait 1 minute before star ting to permit initialisation of the electronic systems. However, if minor problems persist following this operation, contact a CITROËN dealer. Referring to the corresponding section,
you should yourself reinitialise: - the remote control key, - the GPS satellite navigation system.