V8 Quattro V8-3562cc 3.6L DOHC (PT) (1990)
Cellular Phone: All Technical Service Bulletins
Security Code, Identifying
SECURITY CODE, IDENTIFYING (DIAGNOSTIC TEST COMMAND 55 # )
Use the following procedure when phone programming is not possible due to an unknown or forgotten six-digit security code. This procedure is also
used to determine a forgotten lock code or phone number.
^
insert test connector US 30844 (arrow) in line between power cord (25-pin connector) 1 and transceiver 2
^
switch ignition ON
^
switch phone ON by pressing "Pwr" button on handset
^
handset readout displays two alternating sets of numbers
Note
This procedure can also be performed with the ignition switch OFF. However, when the phone is switched ON, the display may show "Loc'd". To
proceed, press the "# " key to enter the Test Mode directly.
^
press "# " key to enter Test Mode
^
handset readout displays "US" with an apostrophe (') in the upper right hand corner
^
enter diagnostic command 55 # by pressing keys "5", "5" and "# "
^
test mode programming begins on step one
^
five-digit system identification number is displayed (for example, "00000")