THE RS4 is well protected with an immobiliser, alarm and door deadlocks. The alarm monitors the engine compartment, luggage bay, doors, sunroof, radio, ignition and the interior. There's no two-stage unlock feature on the remote keypad, though it does include sunroof lock/unlock, tailgate release and prompt the interior lights to go on. Once inside, the driver can lock all via a switch located on his/her door. A retractable cargo security blind is standard.