General Description
The Tibbe locksets and single key system are as fitted to the 95MY sedan. Only the drivers door has a key barrel, fitted in a carryover 95MY sedan driver's door handle. The key operates the drivers door, trunk lid and ignition. There is a second (green headed) key for valet parking/service for door and ignition only, not for unlocking the trunk or glove box. Locking functionality covers central locking of the doors, superlocking, remote/superlocking and valet mode.
Door locking is a function of the Driver Door Control Module (DDCM) and Passenger Door Control Module (PDCM). The Security and Locking Control Module (SLCM) controls the fuel filler flap and trunk lid release actuators. It also monitors the remote key-ring transmitter trunk activity and requests a trunk release command from the Body Processor Module (BPM). The inertia switch will activate and unlock both doors in the event of a vehicle impact.
When the vehicle is not locked, each door catch can be externally released by the corresponding door handle which operates via a single rod. When unlocked, or "single action" locked, the door catches can also be internally released by the interior handles, each of which operates via a single cable. Use of either key in the external door barrel, operates the lock via a short rod to provide locking of the door latch. These locking functions can also be achieved by use of the remote transmitter.
The trunk lid can be independently unlocked via a switch located on the driver's side underscuttle. This will only operate at vehicle speeds up to 8 km/h (5 mph).
A lock barrel located between the X and K of the XK8 badge on the RH side of the trunk rear panel provides external access to the trunk via the black-headed key only.
The fuel filler flap is released via a switch located on the driver's underscuttle. This switch will only operate if the engine is not running and the vehicle is unlocked, or the ignition is in position I or II.
An emergency filler flap release lever is accessed by removing the LH side trunk lining below the filter.
Key Operation
To "single action" lock or unlock the vehicle, the key is inserted in the door lock, turned towards the front or rear of the vehicle respectively, and released. Holding the key in the lock position will close all windows, and on convertible models, will also raise the top. Releasing the key stops all operations. "Single action" locking of the vehicle locks both doors, the trunklid and the fuel filler flap, and sets the alarm system.
A "superlocking" function deadlocks both doors, preventing door opening from the interior, and provides all of the above functions. To raise the convertible top however, the key must again be held in the "lock" position. To "superlock" the vehicle, the key is inserted in the door lock and turned to the unlock position, then within three seconds, turned to the lock position and released.
Remote Operation
A four-button transmitter unit provides for remote controlled central locking of the vehicle.
The button bearing a red closed padlock symbol locks the vehicle and arms the security system. To remote "single action" lock, the transmitter is pointed towards the vehicle and this button is pressed air released. To "superlock" the vehicle, the above operation is repeated within three seconds. This function can also be used to remote close any windows. Completion of "superlocking" is indicated by an audible "chirp" from the security system and a single flash from the direction indicators. The vehicle is unlocked and the security system disarmed by pressing the button with the open padlock symbol.
The trunk lock can also be remotely released by operating the button bearing the trunk lid open symbol.
The button with dipped headlamp symbol is for emergency use. When depressed three times within three seconds, it switches the headlamps on for 25 seconds and operates the vehicle alarm 5 times.