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Home >> Volvo >> 2009 >> XC70 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electrical Modules And Components - Design And Function - 1 Of 5 >> Central Locking, Keyless Entry System (2008-2012) >> Function >> Opening The Tailgate
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Opening The Tailgate

Fig 1: Identifying Opening Tailgate
GLL162973Courtesy of VOLVO CARS CORPORATION

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

Fig 2: Identifying Tailgate
GLL179724Courtesy of VOLVO CARS CORPORATION

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

The tailgate can be opened in three ways: 

XC70 (08-) before structure week 201046 

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, and from 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 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 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 before structure week 201046, there is a switch in the tailgate's lock unit, which indicates whether the tailgate is locked or not. If the lock in the tailgate is activated twice without the switch in the lock unit indicating that the tailgate 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.