2010.5 Citroen DS4 key battery

In the event of a malfunction with the remote control, 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.
Fault with the remote
control
Reinitialisation
 Switch off the ignition and remove the
ignition key.  Press the closed padlock immediately for a few seconds.  Turn the key to position 2 (Ignition on) .  Switch off the ignition and remove the key from the ignition switch. The remote control is fully operational again.
Changing the battery
Battery ref.: CR2032/3 volts.  Unclip the cover using a small screwdriver at the two cutouts.  Lift off the cover.  Remove the flat battery from its location.  Fit the new battery into its location obser ving the original direction of fitment.  Clip the cover onto the casing.
If the battery is flat, you are informed by illumination of this warning lamp, an audible signal and a message in the screen.

To lock or unlock the doors manually in the
event of a malfunction of the central locking system or battery failure.
Emergency control
Locking the driver's door
 Inser t the key in the lock, then turn it to the rear.
Unlocking the driver's door
 Inser t the key in the lock, then turn it to the front.
Locking the front and rear passenger doors
 On the rear doors, check that the child lock is not activated.  Remove the black cap, located on the edge of the door, using the key.  Inser t the key in the socket without forcing it, then without turning it, move the latch sideways towards the inside of the door.  Remove the key and refit the cap.
Unlocking the front and rear passenger doors
 Pull the interior door opening control.

113Access
Boot
Unlocking the boot
 Press this button to unlock the boot. As a safety measure, this action does
not unlock the doors.
Closing
 Lower the boot lid 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 in 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 in 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 seats to gain access to the lock from inside the boot.  Inser t a small screwdriver into hole Aof the lock to unlock the tailgate.  After unlocking the boot or the vehicle using the remote control or the key, press the opening control, then raise the tailgate.
Opening
When the selective unlocking is activated, the boot can be opened at the second press of the unlocking button on the remote control.

 To connect a 12 V accessory (max power: 120 W), remove the cap and connect an appropriate adaptor.  Turn the key to the ignition on position.
12 V accessory socket
This is a removable lamp, fitted in the boot wall, which can be used to light the boot or as a torch.
For the boot lamp function, refer to the "Visibility - § Boot lamp" section.
Torch
Operation
This torch operates with NiMH type rechargeable bateries.
It has an battery life of approximately 45 minutes and charges while you are driving.
Obser ve the polarities when fitting the rechargeable batteries. Never replace the rechargeable batteries with normal batteries.

 To connect a 12 V accessory (max power: 120 W), remove the cap and connect an appropriate adaptor.  Turn the key to the ignition on position.
12 V accessory socket
This is a removable lamp, fitted in the boot wall, which can be used to light the boot or as a torch.
For the boot lamp function, refer to the "Visibility - § Boot lamp" section.
Torch
Operation
This torch operates with NiMH type rechargeable bateries.
It has an battery life of approximately 45 minutes and charges while you are driving.
Obser ve the polarities when fitting the rechargeable batteries. Never replace the rechargeable batteries with normal batteries.

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 y ou 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 the noise level when stationary.
Operation
Going into engine STOP mode
With the automatic gearbox system, for your comfor t during parking maoeuvres, 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), when you put the gear lever into neutral and release the clutch pedal, - with the 6-speed electronic gearbox system , at a speed below 5 mph (8 km/h),
when you press the brake pedal or put the gear lever into position N .
If your vehicle is fitted with the system, a time counter calculates the sum of the periods in STOP mode during a journey. It resets 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 start using the key, - the electric parking brake is applied or being applied, - 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
In this case, the "ECO" warning lamp flashes for a few seconds, then goes off. This operation is per fectly normal.

at every new star t using the key.
Reactivation
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. 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 or a qualified workshop. 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. All work on this type of battery must be done only by a CITROËN dealer or a qualified workshop.
Press the "ECO OFF" switch again. The system is active again; this is confirmed
by the switch warning lamp going off and a message in the instrument panel.

265Practical information
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. Do not push the vehicle to star t the engine if it is fitted with the 6 -speed electronic gearbox system.
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 problems are encountered following this operation, contact a CITROËN dealer or a qualified workshop. Referring to the corresponding section, you must yourself reinitialise: - the remote control key, - the GPS satellite navigation system.