Function

Function

Standard locking function





Note! Up to and including 09w21:The market in Japan has remote keyless entry (RKE), regardless whether the vehicle is equipped with keyless entry system or not. If the vehicle is not equipped with keyless entry system, remote keyless entry (RKE) communicates directly with Central electronic module (CEM). If the vehicle is equipped with keyless entry system, remote keyless entry (RKE) communicates via the Keyless Vehicle Module (KVM). From and including 09w22: If the vehicle is not equipped with the keyless entry system the remote receiver module (RRX) communicates directly with the Central electronic module (CEM). If the vehicle is equipped with the keyless entry system, the remote keyless entry (RKE) communicates via the Keyless vehicle module (KVM).

The lock function that is active when the car is delivered depends on the market. The system can be configured for total unlocking or 2 step unlocking.
Total unlocking means that all side doors unlock and that the tailgate can be opened by activating the switch on the tailgate.
During 2 stage unlocking, only the driver's door is unlocked first. If the remote key is pressed again within 10 seconds, the other doors are unlocked.
The vehicle is normally unlocked by pressing the remote key's unlock button. This also deactivates the alarm if installed. The vehicle can also be unlocked using the key blade in the remote key. Unlocking the car with the key blade should be seen as a last resort. If the car is unlocked with the key blade, the alarm will be triggered. The alarm can then be reset by inserting the remote key in the starter module.

Keyless function




When the system for keyless entry is installed, the Keyless vehicle module (KVM) checks the identity of the remote key when unlocking and locking. The Keyless vehicle module (KVM) then transmits a command to the opening motor in the door where the handle was pulled out.
The opening motor affects the catch in the lock unit mechanically, when the opening motor is activated the catch releases from the striker plate in the body and the door opens.
If the lock is locked when the opening motor is activated, the lock unlocks automatically.
The Keyless vehicle module (KVM) checks the identity of the remote key using the antenna in the external handle on the rear side doors and in the tailgate.
The remote key is checked when one of the handles on the side doors or the handle on the tailgate is activated. The Keyless vehicle module (KVM) activates one of the external antennas to check the identity of the remote key.
The vehicle is locked using the lock buttons on the door handles. During locking, the antenna is also activated to check that there is an authorized remote key in the vicinity of the vehicle. If the remote key is approved, the keyless vehicle module (KVM) transmits a signal to the central electronic module (CEM) to lock the vehicle.

Lock function with deadlocking (market dependent)




If lock units with deadlocks are installed, there is an extra lock motor installed in each lock unit.
The function for this lock motor is to mechanically disconnect the inner door handle.
The function is activated automatically 10 seconds after the vehicle has been locked. This means that a side door cannot be opened from inside even if a window has been smashed for example. This also means that people who are inside the vehicle when it is locked cannot get out. The deadlock function can be disconnected via the reduced alarm function in this case. From structure week 200746 activation of reduced alarm takes place via the menu in the infotainment control module (ICM).
For further information about reduced alarm, see Design and Function, Alarm.

Valet locking of the cargo compartment and glove compartment (option)




Valet locking is used to block access to the glove compartment, cargo compartment and certain functions in the car.
The key blade must be taken out of the remote key to activate this function. The function is activated by locking the glove compartment in the normal way using the key blade (turning 0 to 90 degrees) and then continuing to turn (from 90 to 180 degrees). This sets the glove compartment and tailgate to valet mode and blocks the phone module (PHM) for outgoing calls if installed. A text message in the driver information module (DIM) indicates that the lock is active. The tailgate cannot now be opened using the remote control or lock switches in the doors. The key blade is kept by the customer and the remote control can be handed to valet parking attendants or workshop staff who need access to the vehicle.
This function is deactivated by inserting the key blade in the lock cylinder in the glove compartment and turning it back a quarter of a turn (from 180 to 90 degrees). The tailgate can then be unlocked again using the remote key, central locking switch or the switch on the light switch module (LSM).

Electrical child-proof lock (option)




The electrical child-proof locking function involves an additional lock motor in each rear lock unit. The lock motor disengages the inner door handle on each rear door so that the door cannot be opened from the inside. The central electronic module (CEM) also deactivates the rear electrical window lift mechanisms while the function is activated. This function is activated using a switch on the control panel in the driver's door. The control panel is serially connected via LIN to the driver door module (DDM). The switch has an alternating function which engages or disengages the function every other time the switch is pressed. The activation switch has a built-in LED to indicate activated function.
The central electronic module (CEM) receives information from the rear door control modules, via the front door control modules, that the function is activated. The position of the lock motors using a contact breaker in the lock unit. The function for child-proof locks can be activated or deactivated in all ignition positions and up to 1 minute after the remote key has been removed from the starter module. During deactivation, the inner door handles are re-engaged and the rear power window lift mechanisms are activated. The LED in the switch goes out and the driver information module (DIM) displays a message indicating that the function had been deactivated.
A diagnostic trouble code (DTC) is stored in the central electronic module (CEM) if the indication from the lock motors is incorrect or missing, or if deactivation or activation fails. A message is also shown in the driver information module (DIM).

Opening the tailgate




V70 (08-) and XC70 (08-) up to and incl. structure week 201045




XC60, as well as from and including structure week 201046 also V70 (08-) and XC70 (08-)

The tailgate can be opened in three ways:
- via the handle on the outside of the tailgate
- via the button on the remote key
- via the switch on the Light switch module (LSM).

Note! If the vehicle is equipped with power operated tailgate, see Design and Function, Power Operated Tailgate Module (POT).

V70 (08-) and XC70 (08-) up to and incl. structure week 201045
The tailgate can be unlocked using the switch on the Light switch module (LSM). When the switch is pressed in, a signal is transmitted to the Central electronic module (CEM) which activates the locking/unlocking motor. When the lock is unlocked and the handle pressed in, the catches release from the striker plate in the body and the tailgate opens. The handle on the tailgate affects the catch in the tailgate lock unit mechanically via a wire.

XC60, as well as from and including structure week 201046 also V70 (08-) and XC70 (08-)
The tailgate/trunk lid can be "unlocked" separately using a switch on the light switch module (LSM). When the switch is pressed in, a signal is transmitted to the central electronic module (CEM) indicating that the tailgate/trunk lid must permitted to be opened using the switch in the handle on the lid.
The locking/unlocking motor in the tailgate lock unit is directly connected to the Central electronic module (CEM) and Power Operated Tailgate Module (POT) (option).
The switch in the tailgate's handle is directly connected to Keyless vehicle module (KVM) or Power Operated Tailgate Module (POT). On XC60 and from and including structure week 201046 on V70 (08-) and XC70 (08-), the switch is also directly connected to Central electronic module (CEM).
The tailgate does not open if private locking is activated.
When the lock is unlocked and the handle is pressed in, the lock catch releases from the lock brace and the tailgate opens. For XC60 and from and including structure week 201046 on V70(08-), and XC70(08-) the lock is activated, if the vehicle is unlocked, first when the handle is pulled.
When the switch is activated, and the tailgate/trunk lid is locked, a message is sent to Keyless vehicle module (KVM) that activates the antenna in the tailgate and searches for a valid remote key with keyless function. If a valid remote key is found, Keyless vehicle module (KVM) sends a signal to Central electronic module (CEM) which unlocks and releases the motor.
For V70 and XC70 up to and including structure week 201045, there is a switch in the boot lid's lock unit, which indicates whether the boot lid is locked or not. If the lock in the boot lid is activated twice without the switch in the lock unit indicating that the boot lid is locked/unlocked, a DTC is stored in the Central electronic module (CEM).
The button on the remote key can be used to unlock the tailgate even if the rest of the vehicle is locked.
The tailgate cannot be unlocked if the vehicle speed is greater than 7 km/h (5 mph) or if privacy locking is activated.

Locking/opening fuel tank filler cover




The switch for opening the fuel tank filler cover is in the light switch module (LSM). The light switch module (LSM) is serially connected, via LIN, to the central electronic module (CEM) and transmits a signal to the central electronic module (CEM) when the switch is pressed. The lock motor is directly connected to the central electronic module (CEM).
When the central electronic module (CEM) receives a signal indicating that the switch has been pressed, the central electronic module (CEM) powers the lock motor, which starts to operate. The lock motor has a spring-loaded piston which returns to its original position after a fully completed cycle. This means that the lock motor only needs to operate in one direction. When the sun roof is closed, it is locked.
Fuel tank filler cover opening has a delay of 1 second as certain markets (USA/CDN) have automatic fuel leak detection installed.
When the switch is pressed, a signal is transmitted to the Engine control module (ECM) to stop fuel leak diagnostics. The delay is so that the fuel tank has time to eliminate the over pressure before the fuel tank filler cover is removed.

Light functions




The interior lighting is checked by the central electronic module (CEM). The interior lighting comes on when the vehicle is unlocked.
For further information about the interior lighting, see Design and Function, central electronic module (CEM).

Further light functions are included in the central locking system:
- approach lighting
- approach lights.

Local lighting
Local lighting is activated using the remote key. The following light when activated:
- interior lighting
- parking lights
- license plate lighting
- door mirror lighting (option).
During initial setting of the lighting it is lit for 30 seconds or until the starter button is pushed. This time can be adapted to the wishes of the customer.

Approach lights
There is a function for approach lights as part of the lighting system. When the engine is off, the remote key is removed from the starter module and the dip switch is activated, the following lights:
- low beam
- parking lights
- fog lamps
- interior lighting.
The default setting for the lighting is 30 seconds. This time can be adapted to the wishes of the customer.

Customer settings
The duration that the local lighting and approach lights are on can be adapted to the wishes of the customer.
For information about customer adaptations, see: Diagnostic functions Diagnostic Functions

Indication of the status of the doors, lock motors and hatches





There are three contact breakers in the lock units in the side doors:
- contact breaker which indicates that the door is completely closed
- contact breaker to indicate that the central locking motor is in the locked position
- contact breaker which indicates that the child-proof lock motor is in its locked position (rear doors only).

There are two contact breakers in the tailgate lock unit:
- switch for indicating that the lock is locked or unlocked (not on XC60 or on V70/XC70 from and including structure week 201046)
- contact breaker which indicates that the tailgate is closed
The contact breakers are connected directly to the central electronic module (CEM) from all doors.
Contact breaker for central locking motor indication, and consequently contact breaker for child-proof lock motor, for the rear doors, are connected to their respective rear control module. The rear door control modules transmit the signal on to the relevant control module in the front doors which forward the signal to the central electronic module (CEM).
The signals are used to generate error messages and diagnostic trouble codes (DTCs) if a door is not properly closed when the vehicle is driven or if locking or unlocking of one or more doors has failed one or more times.

Note! There is no contact breaker for indicating an activated lock motor for deadlocks. The system only operates in the event of a change in status from the last position.

There is only one contact breaker in the lock unit in the tailgate. This indicates whether the tailgate is open or closed.

Unlocking and locking (MY 2012-) remote
The vehicle can be unlocked remotely via the Volvo On Call service. If the remote keys have been locked in the car or lost, the customer can call a Volvo Service Center. The customer must provide a code to the Service Center, which then transmits a signal to the vehicle. This message unlocks the tailgate and when the tailgate is opened within the specified time interval, the rest of the vehicle unlocks.
From and including model year 2012 it is also possible to lock the vehicle from Volvo Service Center.
The function is market dependent.

Automatic locking when driving




Whether the automatic locking function is activated on delivery or not is market dependent. The function is deactivated at the factory. The setting can be changed via the menu in the Infotainment control module (ICM).
If this function is activated, the side doors and tailgate lock when the speed exceeds 7 km/h (5 mph). This is on the condition that all side doors and tailgate are closed, the engine is running and the vehicle is moving forward. Information about whether the engine is running or not is discovered by the Central electronic module (CEM) via a calculation of different signals that are transmitted from other control modules to the Central electronic module (CEM), e.g. key position.
Indication about whether the engine drives the vehicle forward differs between vehicles with a manual or automatic transmission.
On vehicles with an automatic transmission, the gear selector position is obtained from the Transmission control module (TCM). The gear selector must not be in P or N in order for automatic locking to work.
On vehicles with a manual transmission, the Central electronic module (CEM) receives information about the vehicle's speed from the Brake control module (BCM). At the same time the accelerator pedal must be partially affected in order for locking to be carried out.
The door can be unlocked again as normal using the central locking switches.

Automatic re-locking after unlocking




If the car is unlocked using the remote key or "keyless entry" and the side doors or tailgate are not opened within 2 minutes, the vehicle will be locked automatically. Whether this function is activated on delivery or not depends on the market. This function can be activated later via the diagnostic tool or the infotainment control module (ICM).

Remote key warning (USA/CAN)
Remote key warning alerts the driver, by means of a text message and an audible acknowledgement signal, not to leave the remote key in the vehicle.
The central electronic module (CEM) receives an indication from a contact breaker in the lock unit that the driver's door is open. The contact breaker is directly connected to the central electronic module (CEM). If a remote key is in the starter module when the driver's door is opened and the engine is switched of the central electronic module (CEM) transmits a message via the controller area network (CAN) to the driver information module (DIM). The driver information module (DIM) then activates an audible acknowledgement signal and shows a warning message in the text display.

Passive remote key warning
Passive remote key warning alerts the driver that a validated remote key has been removed from the passenger compartment.
If a passive remote key has been validated and used to start the vehicle, the validation only applies until the vehicle is switched off. If the engine is running and a door is opened, the system will scan the passenger compartment for remote keys as soon as all doors are closed. If the remote key that was used to start the vehicle is not detected, a warning message will be displayed in the driver information module (DIM) and an audible signal heard. The system will scan for keys each time a door is opened and all doors are closed again or when the driver presses the READ button. The engine will not be switched off. However, the immobilizer system activates and blocks new start attempts as soon as the starter button is pressed in to switch off the engine.

Comfort" functions
The Comfort Closing function can be activated from the remote key and from the central locking switch on one of the front doors. If the central electronic module (CEM) receives repeated lock signals, corresponding to a pressed lock button for approximately 2 seconds, it will lock all doors as well as closing the windows and sunroof.
The corresponding function (Comfort Opening) is available when unlocking the vehicle. If the central electronic module (CEM) receives repeated unlock signals, corresponding to a pressed unlock button for approximately 3 seconds, it will unlock all doors as programmed into the central locking system as well as opening all windows and sun roof.