Key Warning

The key warning function is part of the security system. For vehicles without the keyless function there is only key warning on vehicles on the USA/CDN market. The components in the function are the central electronic module (CEM) and the driver information module (DIM). The warning activates when the driver's door is opened when the remote key is in the Start control module (SCU). A contact in the lock unit of the driver's door indicates that the driver's door was opened.

If the system for keyless functions is installed, the antennas inside the vehicle are activated each time the driver's door is opened. The system then scans for the key which was used to start the vehicle. A warning message is displayed in the driver information module (DIM) if this key is not found. The engine will continue running, but the engine is switched off it will not start again if there is not another valid remote key inside the vehicle.

For vehicles with the keyless function the signal is also activated and a message is displayed in the Driver information module (DIM) if the vehicle is in any other ignition position than "ignition off" when the driver's door is opened and the engine is switched off.