The outside of the door handles contains a recess for locking, while the inside contains a touch-sensitive surface for unlocking.
It is important that only one touch-sensitive surface is activated at a time. Gripping the handle while touching the lock surface risks giving double commands. This means that the requested activity (locking/unlocking) will not be executed, or will be executed with a delay.
The tailgate handle has a rubberised pressure plate underneath that is only used for unlocking.
Be aware that the system may be activated in connection with car washing if the key is in range.