Radio Navigation System Electronic Anti-Theft System
Radio Navigation System Electronic Anti-Theft System
The Navigation System is equipped with an electronic Comfort anti-theft system which operates in conjunction with radio unit identification data stored in the instrument cluster.
When an existing radio - navigation unit is removed (power supply disconnected) and reinstalled in the same vehicle, it is not necessary to input the anti-theft security code.
Electronic Anti-Theft System, Function
After first activation of electronic anti-theft system, a numeric code is stored in both the radio - navigation unit and instrument cluster. When the unit power supply is restored ( e.g. after removing and installing unit or battery), a data exchange takes place between the radio - navigation unit and instrument cluster.
The data exchange compares the numeric code of the unit to the numeric code stored in the instrument cluster. If numeric code is identical, the instrument cluster recognizes that the radio - navigation unit "belongs to the vehicle"and is ready for operation.
Should a radio - navigation unit be replaced, the anti-theft code must be entered.
Deactivating electronic anti-theft system.
Next, when the ignition key is inserted into the ignition switch (" S-contact" activated), the data exchange between the replacement radio - navigation unit and instrument cluster take place automatically.
The data exchange lasts about 5 seconds. During this time a VAS 5051/5052 must not be connected or remain connected.
After successful data exchange, the replacement unit is ready for operation without renewed input of anti-theft code (should power supply subsequently be disconnected and reconnected).
The electronic anti-theft system is activated and will lock the radio - navigation unit as soon as:
• radio - navigation unit is installed in a different vehicle
• instrument cluster is replaced
A radio - navigation unit which has been locked by the electronic anti-theft system will show "SAFE" and "1000" on display when switched on.
To cancel the lock, deactivate the electronic anti-theft warning system.
Electronic Anti-Theft System, Deactivating
Reactivating a locked radio navigation system is only possible by entering correct code number for electronic anti-theft system.
• Code number for electronic anti-theft system is listed along with radio serial number on radio card.
• For security reasons, radio card should not be stored in the vehicle. Obtain the code number from the customer, if necessary.
• If a radio navigation system is replaced, code number from replacement unit must be used.
• Inform the customer that the code number has changed.
- Obtain radio code.
- Switch on radio navigation system.
The word "SAFE" and the number row "0000" appear in the display.
- Enter the code number listed on the radio card, do this by selecting and confirming characters on the selection screen for letters and numbers in succession.
• With the entry of the first character, the number row "0000" is overwritten.
- Confirm code by pressing the right rotary press button.
- When the anti-theft code has been entered, confirm with Taste located next to the word "OK" on the display.
The unit is enabled and ready for operation.
• If the anti-theft code has been entered incorrectly, it can be corrected immediately in two subsequent attempts. If anti-theft code is entered incorrectly three times, then the radio navigation system is locked for an hour. Radio navigation system can then be switched on and insert ignition key in ignition lock. After one hour, then the procedure for deactivating the electronic anti-theft system can be repeated. Remember: Always three attempts to input code, after that the radio navigation system is locked for one hour.