Trunk Lock

Trunk Lock
The trunk lock and lock barrel are identical with those on the E46. The difference between the (E85) Z4 and the E46 is the linkage between the lock and the lock barrel. Instead of a rod linkage, a cable is used. The lock is released (manually) by a cable mechanism operated by the key. The switch for the anti-theft alarm system is incorporated in the lock barrel.
The trunk lock can be operated manually or electrically. The Basic module 5 controls the motor in the trunk lock by means of the "Trunk lock, motor unlock" signal. The locking pawl is moved to the release position by the drive pin. The locking pawl releases the latch which can then rotate into the disengaged position by the action of the tension spring. The trunk can then be opened. The locking pawl releases the microswitch button from the depressed position. The microswitch switches the trunk light on.
The trunk can be unlocked from the lock barrel. The trunk lock can be unlocked by means of a cable operated by the lock barrel.
The locking pawl is pulled to the release position by the cable. The locking pawl releases the latch which can then rotate into the disengaged position by the action of the tension spring. The trunk can then be opened.