Cadillac 2006 DTS Owner's Manual page 100

®
When the PASS-Key III+ system senses that someone
is using the wrong key, it prevents the vehicle from
starting. Anyone using a trial-and-error method to start
the vehicle will be discouraged because of the high
number of electrical key codes.
If the engine does not start and the security light comes
on when trying to start the vehicle, the key may have
a damaged transponder. Turn the ignition off and
try again.
If the engine still does not start, and the key appears to
be undamaged, try another ignition key. At this time,
you may also want to check the fuse, see Fuses
and Circuit Breakers on page 5-93. If the engine still
does not start with the other key, your vehicle needs
service. If your vehicle does start, the first key may be
faulty. See your dealer who can service the
®
PASS-Key III+ to have a new key made. In an
emergency, contact Roadside Assistance.
It is possible for the PASS-Key
the transponder value of a new or replacement key.
Up to nine additional keys may be programmed for the
vehicle. The following procedure is for programming
additional keys only. If all the currently programmed
keys are lost or do not operate, you must see your
dealer or a locksmith who can service PASS-Key
to have keys made and programmed to the system.
2-22
®
III+ decoder to "learn"
®
III+
See your dealer or a locksmith who can service
®
PASS-Key III+ to get a new key blank that is cut
exactly as the ignition key that operates the system.
To program the new key do the following:
1. Verify that the new key has a
2. Insert the original, already programmed, key in the
ignition and start the engine. If the engine will not
start, see your dealer for service.
3. After the engine has started, turn the key to OFF,
and remove the key.
4. Insert the new key to be programmed and turn it to
the RUN position within five seconds of removing
the original key.
5. The security light will turn off once the key has
been programmed.
6. Repeat Steps 1 through 5 if additional keys are to
be programmed.
If you are driving and the security light comes on and
stays on, you may be able to restart your engine.
®
Your PASS-Key III+ system, however, may not be
working properly and must be serviced by your dealer.
If you lose or damage your PASS-Key
see your dealer or a locksmith who can service
®
PASS-Key III+ to have a new key made.
stamped on it.
®
III+ key,