UNLOCKING USING KEY
Keyblade lock/unlock
The driver's door can be locked and unlocked using the key blade which is normally retracted inside the remote control. This is an extra solution should there be a fault in the system. The other doors can be unlocked using the inner central locking buttons after the key is inserted in the ignition.
The lock cylinder on the driver's door has a cover. This cover must first be removed to expose the lock cylinder. This is done by inserting the mechanical key in a hole on the underneath of the cover and pulling out.
Volvo On Call can be used to unlock the vehicle from a Volvo Service Center if the customer is unable to open the vehicle in the normal way for any reason.
Central locking system
Scheme 233
Note. This document describes the central locking system in cars with a keyless vehicle module (KVM). Some components are different from the standard central locking system. This document describes the main functions of the central locking system with keyless entry.
The central locking system contains a number of functions. The system is monitored by the central electronic module (CEM).
The central electronic module (CEM) communicates with the constituent units, whether directly connected or connected in series, via the CAN network.
The functions covered are
- standard locking function (total or 2 stage)
- deadlocking
- private locking mode
- child-proof lock
- unlocking the trunk lid/tailgate
- unlocking the fuel tank filler cover
- light functions (local lighting and approach lights)
- indication of the status of the doors and hatches
- remote unlocking
- automatic locking function
- re-locking
- passive functions
The standard locking function unlocks the side doors and activates the lock motor in the trunk lid/tailgate when the lock button is pressed. The trunk lid/tailgate can then be opened. Unlocking can be carried out using the button on the remote control or by using the key blade in the driver's door lock cylinder. There are two settings
- total
- 2 stage.
Total unlocking unlocks all doors at the same time. The American market has 2 stage unlocking. The driver's door unlocks on the first press of the unlock button on the remote control. Press the button again within 10 seconds and the other doors unlock. When unlocking a 2 stage system with the key, the key must be turned counter-clockwise twice for all doors to unlock.
Deadlocking is an option. Deadlocking means that the inner door handles and lock buttons are disengaged when the central locking is activated. It will not then be possible to open a side door from the inside, even if a window is smashed. Deadlocking is activated 25 seconds after the vehicle was locked. This function requires lock units with lock motors for this function. The function can be temporarily disengaged using the switch for reduced alarm.
The glove compartment and cargo compartment can be locked to "valet' mode.
Child-proof locking disengages the rear internal door handles. The switch is on the switch panel on the driver's door. The rear window lift mechanisms cannot be operated either if child-proof locking is activated.
In practice there is no "locked" mode for the lock on the tailgate/trunk lid. The difference between locked and unlocked is whether the central electronic module (CEM) will activate the lock motor or not when the switch on the tailgate/trunk lid is pressed.
The tailgate/trunk lid is "locked" and "unlocked" at the same time as other doors if an unlock command is received from the remote control. The tailgate/trunk lid can also be unlocked separately using a dedicated button on the remote control.
The switch on the tailgate or trunk lid is directly connected to the keyless vehicle module (KVM) and to the central electronic module (CEM). The lock motor is directly connected to the central electronic module (CEM).
The unlocking switch for the fuel tank filler cover is on the light switch module (LSM) at the side of the driver. The button is directly connected to the central electronic module (CEM). The lock motor for the fuel tank filler cover is at the rear edge of the fuel tank filler cover. The lock motor is directly connected to the central electronic module (CEM).
Local lighting and approach lights are part of the system.
Local lighting is activated using the remote control. Approach lights are activated when the high/low beam switch is pulled backwards when the vehicle is parked.
There are switches in the lock units on the side doors and tailgate/trunk lid which indicate whether the doors or trunk lid/tailgate are open or closed. These switches are also known as door open sensors. There is also a separate switch at the hood if the car has an alarm. There is no switch at the fuel tank filler cover. The switches are closed when the door is closed, providing a ground connection to the central electronic module (CEM).
The system can be activated so that the car is locked automatically when the car reaches 7 km/h (5 mph). Whether this function is activated on delivery or not depends on the market.
The system has a function for re-locking. If the car is unlocked using the remote control or key and the side doors or trunk lid/tailgate are not opened within 2 minutes, the car will be locked automatically. This function prevents the car from being left unlocked unintentionally.
The passive functions are controlled by the keyless vehicle module (KVM). These passive functions cover unlocking, locking and vehicle start. To this end, certain components are connected to the keyless vehicle module (KVM) instead of the central electronic module (CEM).
The text message display in the driver information module (DIM) indicates whether child-proof locking, valet locking or reduced alarm is activated. There is also an alert message if a door opens while driving.
The customer can make certain settings to determine how the locking system works. For more information, see: DESCRIPTION OF PROGRAMMABLE PARAMETERS, CUSTOMER ADAPTATION
The turn signal lamps give a long flash to confirm that the car is fully locked. They flash twice when the car is unlocked. The customer can decide whether the acknowledgment is activated or not via the menu system in the infotainment control module (ICM) or via VIDA (Volvo scan tool).
The central locking system can be unlocked using the remote control.
The remote control has buttons for
- unlocking
- locking
- unlocking the trunk lid/tailgate
- panic function
- local lighting.
The remote control also supports keyless functionality when installed in the vehicle. This means that there is an additional communication circuit in the remote control compared to a "standard" remote control. However, the appearance of the remote control is identical.
The panic function can be activated using the remote control. The panic function activates the horn for 25 seconds. This function is to attract attention in an emergency situation.
Applies to the S40
The driver door can be unlocked and locked using the key blade that normally is inserted in the remote control. It works as a back-up solution if there should be a problem with the system. The other doors can then be unlocked with the interior central locking buttons after the key has been inserted in the ignition. The lock cylinder on the driver door is covered by a casing. This casing has to be removed first for the lock cylinder to be visible. This is done by inserting the mechanical key through a hole on the underside of the casing and pulling outward.
Volvo On Call can be used to unlock the vehicle from a Volvo Service Center if the customer is unable to open the vehicle in the normal way for any reason.
Scheme 234
The damper motor module (DMM) consists of a control unit and a stepper motor. The different versions of the climate control system have up to 5 damper motor modules (DMM). These are for the different functions such as defroster and recirculation. The climate control module (CCM) communicates with the other damper motor modules (DMM) via two LIN buses, LIN bus 1 and LIN bus 2. The position of the damper motors on the LIN buses depends on whether the vehicle is left or right-hand drive.
When regulating the different dampers, the climate control module (CCM) transmits a request for a new damper position to the each damper motor module (DMM). The damper motor module (DMM) calculates and then regulates the required direction and number of steps required to obtain the requested position. The damper motor module (DMM) then transmits information to the climate control module (CCM) indicating the actual damper position and status.
When replacing the damper motor module (DMM), the new damper motor must be identified by the climate control module (CCM). This is carried out via VIDA (Volvo scan tool). When replacing the damper motors, ensure that identification is carried out.
Each damper motor module (DMM) is powered via a relay in the central electronic module (CEM).
There are diagnostics for the damper motor module (DMM).
Scheme 235
The evaporator temperature sensor is installed on the heater. Its role is to inform the climate control module (CCM) of the temperature of the refrigerant. The climate control module (CCM) controls the request from the evaporator temperature sensor to activate the air conditioning compressor. The evaporator temperature sensor is directly connected to the climate control module (CCM).
There are diagnostics for the evaporator temperature sensor.