Switches Affected By The External Door Handles
In addition to antennas (C30/C70 in front doors, S40/V50 in rear doors), the external door handles have two internal switches and a lock button. One switch is connected to the handle and is acted on via a linkage system when the handle is pulled outward. The second switch is affected when the lock button is pressed in. From the door handle, there is also a link arm to the quick-lock, where the link arm acts on a third switch inside the quick-lock when the handle is fully pulled out.
The first switch is closed when the handle is pulled out by 2-4 mm. When a switch is closed, an input on the keyless vehicle module (KVM) is grounded. The keyless vehicle module (KVM) wakes and activates the external antennas to scans for a valid key. This switch is closed for as long as the handles is pulled out.
Just before the handle is pulled out to its limit position, the switch in the quick lock is closed by the control arm from the door handle. When the switch closes, one of the inputs in the keyless vehicle module (KVM) is grounded.
This mechanical affect on the switch in the quick lock is one of the conditions for the keyless vehicle module (KVM) to activate the quick lock.
The switch connected to the lock button is closed when the lock button is pressed in. The switch instructs the keyless vehicle module (KVM) that the vehicle should be locked.