volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Activating electronic anti-theft system for radio units 1994 > > < Removing and installing radio 1994 >
Electrical system
Radio systems
Electronic anti-theft system for radio units 1994 >

Functional notes

All radios are equipped with an electronic anti-theft system.

The electronic anti-theft system is activated and blocks the radio unit as soon as

  • ◆ Voltage supply (terminal 30) drops below a predetermined voltage level.
  • ◆ The radio part fuse is blown.
  • ◆ The radio unit is disconnected from voltage supply (terminal 30) (e.g. when removing radio unit).

and of course,

  • ◆ The vehicle battery (terminal 30) has been disconnected in order that work on the vehicle can be carried out.

A radio unit which has been blocked by the electronic anti-theft system, is shown when "SAFE" appears in the display when the unit is switched on.

Removing "block"

The radio unit will only work again if the correct code number for the anti-theft system is entered.

  • ‒ Obtain code number of unit

Notes:

The code number for the anti-theft system along with the radio unit serial number is stuck onto the radio card.

=> Operating Instructions

For reasons of security the radio card should not be kept in the vehicle. The code number must be obtained from the customer if necessary.

  • ‒ Switch radio unit on.
  • ‒ Press buttons TP and TA simultaneously until "1000" appears in the display. Release buttons.
  • ‒ With the help of station buttons 1 to 4 enter code number printed on radio card. Use button 1 to input the first digit of the code number, button 2 to input the 2nd digit and so on.
  • ‒ Then press buttons TP and TA simultaneously again and hold down until "SAFE" appears on the frequency display. Release buttons, shortly afterwards a frequency will automatically appear.

If the code number has been entered correctly into the radio unit, when the ignition key is removed the diode located next to the unit name will blink. If the diode blinks the radio is ready for operation and the anti-theft coding is activated.

Activating electronic anti-theft system for radio units 1994 > > < Removing and installing radio 1994 >