Volvo Trucks North America, Inc. Date Group No. Page
Service Bulletin 4.2004 392 08 21(47)
Theftlock
When THEFTLOCK is activated, the radio will display
LOCKED to indicate a locked condition anytime battery
power is removed. If your battery loses power for any
reason, you must unlock the radio with the secret code
before it will operate.
The instructions that follow explain how to enter your
secret code to activate the THEFTLOCK system. It is
recommended that you read through all 11 steps before
starting the procedure.
Note: If you allow more than 15 seconds to elapse
between any of the steps, the radio will automatically
revert to time and you must start the procedure over at
step 4.
To activate THEFTLOCK:
1 Choose a 4–digit code between 0000 and 9999.
Note: Keep the code in a secure place.
2 Turn the ignition ON.
3 Turn the radio off (2).
4 Press push-buttons 1 and 4 (3) at the same time. Hold
them until ––––shows on the display (4).
5 Press MN (5), 0000 will appear on the display.
6 Press MN (5) as many times as needed to make the
last two digits agree with the secret code you have
chosen.
7 Press HR (6) as many times as needed to make the
first two digits agree with the secret code you have
chosen.
8 Confirm that the code on the display matches your
secret code.
9 Press BAND (1). The display will show REPEAT to let
you know that you need to confirm your code.
10 Repeat step 5–8 to confirm your code.
11 Press BAND (1). The display will show SECURE to let
you know that your radio is secure. If THEFTLOCK has
not been activated, ––––will show on the display. To
activate, repeat steps 4–11.
To disable the THEFTLOCK:
Note: Pause no more than 15 seconds between the
steps.
1 Turn the ignition ON.
2 Turn the radio off.
3 Press the push-buttons 1 and 4 (3) together until
SECURE shows up on the display.
4 Press MN (5). The display will show 0000.
5 Press MN (5) as many times as needed to make the
last digits agree with the secret code.
6 Press HR (6) as many times as needed to make the
first digits agree with the secret code.
7 Confirm that the code on the display matches the code
you have chosen.
8 Press BAND. The display will show ––––indicating
that the radio is no longer secure.
Note: If the display shows SECURE, the incorrect code
was entered. Repeat steps 1–8.
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