Question about 2001 Cadillac DeVille

4 Answers

2001 Cadillac Deville Security System

Car won't start, turn key and nothing. Battery is good. Have tried locking and unlocking with remote on both keys. I would guess security system has locked up.

Any ideas?

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  • cad18702 Sep 15, 2008

    car wont turn over theft system just replaced... still same problem says its disabling 2001 cadillac deville sedan help......

  • Anonymous Feb 23, 2009

    Where is engine to chassis ground. Under rear seat or engine compartment

  • MarWell Mar 24, 2009

    Car won't start, turn key and nothing. Battery is good. Have tried locking and unlocking with remote on both keys. Lights and all electrict functioning. No noise from starter. Cleaned and tightened all connections on battery, starter, and the jump start terminal under red cover on passinger side under hood above wheel. Always starts first time daily or when sitting an hour or more. Does not start after being driven either short or long distance about once monthly. Doors lock and unlock with either remote FOB or with any key. Security system light seems same as always.

  • baeasley Apr 19, 2009

    my security system light came on what can i do without taking it to a dealership that charges to much money to fix.

  • Anna Bryant Jun 21, 2013

    my alternator went out on a trip so I drove on battery till it diesd..I have had the alternator replaced and battry ..now it will not start says secuirty system need service as well as tire monitor and air bag ...I have turned the key on and left for over 10 minutes and then tried to start ..nothing ..now doing over 10 min in run then off then over 10 min in run then off...and will repeat one more time ...if that does help what do you recommend?

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Check engine to chassis ground I had same prob

Posted on Oct 03, 2008

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Have you checed all of the wires and connections for this system there might be a loose connection somewhere also check the batteries in the remote

Posted on Aug 20, 2008

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I had a similar problem intermittent NO START. No click, buzz or other noise. Everything worked but wouldn't start. Unfortunately it took two trips to the dealer to locate the problem. Next time it happens find the purple wire in the wire harness under the cover on top of the engine. A simple tester that connects to ground with an lighted "awl" type probe will tell you if there is power from the key to that point. If there is and you're not starting then the only other thing downline is the starter. Can't repair them only replace. Dealer will be about 900.00 P&L , If you're daring or have some help it's right on top DIY 400.00.

Posted on Apr 21, 2009

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Purple wire in the wire harness under the cover on top of the engine were does it go connected to

Posted on Mar 26, 2011

  • Naomi Scheepers
    Naomi Scheepers Mar 11, 2014

    Top cannot open. Everything is locked.

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Very interesting site here.. regarding your problem. http://vatspasslockpasskeysecurityhelp.yolasite.com/
Another thought.. even though you charged the battery, it's not at all uncommon for a car battery to be very damaged by fully discharging. Especially if not new-ish. One or more cells in it may be bad causing the overall voltage to be under normal. This alone can cause the problem you have. I would try jumping it with another car or test the battery to see if it's got at least 12.7 to 12.9 volts when sitting doing nothing. Good luck.

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If this doen't work, you will probably have to wait until your wife gets home so you can reset the security system by using the remote to lock the unlock the doors.

I would also recommend investing in a second remote and key so you don't have this problem in the future. The second key and remote is pretty easy to progrm on your vehicle. This can be done either by the dealer or most aftermarket repair shops. You MAY even want to try to do it yourself. Instructions for programming additional keys and remotes are located in your Owner's Manual.

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IMPREZA: 2005, 2006, 2007 and
FORESTER: 2005, 2006, 2007, 2008
Check for Immobilizer key on Forester XT models only.
information is always subject to change and correction imp05keylessremote1.jpg
new remote for 2005 Imprezas.
This is not the same remote as the 05 Legacy/Outback remote which also has truck/gate release on the front and a red panic button on the back.
Lock: press Lock button for 2 seconds or so to lock car, and arm optional security system. The car with chirp once and turn signals flash for locked, 5 short chirps and signal flashes if any door is not fully closed. The dome light goes on for 15 seconds and ignition key ring (if present) will light for 30 seconds when unlocked.
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Panic mode: press and hold lock button for approx. 3-4 seconds to activate Panic mode. I panic model the horn honks and turn signals flash until either the lock or unlock button is pushed again.
Finder mode: Press lock button 3 times within 5 seconds to activate Vehicle Finder mode. The horn will honk once and the turn signals will flash 3 times
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Audible Chirp On-Off: the system will chirp when locked or unlocked. To turn OFF the chirps, unlock the door and then push both lock and unlock buttons at the exact same time for 2+ seconds. There will be 2 chirps indicating the the audible is off. To turn the chirp back on, repeat the process and the system will chirp one time when it is back on.
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Open and close driver's door again.
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The Lexus car remote key control model ES300


try this:

1. Start with key out of ignition, drivers door is open all others closed and
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2. Insert key into the ignition (DO NOT Turn) and Pull key out.
3. Perform these steps within 40 seconds.
A. Using the power lock switch on the drivers door, perform 5 lock/unlock cycles
starting with lock. Use an even pace and try to go about one cycle per second.
(1Cycle = 1 lock and 1 unlock).
B. Close, then open drivers door.

4. Perform these steps within 40 seconds.
A. Using the power lock switch on the drivers door, perform 5 lock/unlock cycles
starting with lock. Use an even pace and try to go about one cycle per second.
(1Cycle = 1 lock and 1 unlock).
B. Insert the key in the ignition cylinder.
C. Turn the ignition to ON (Do NOT Start) then back to OFF.
D. Remove the key from the ignition.

5. Press any button on remote for a minimum of 1 second.
System should now lock and unlock doors once.

6. Close and open drivers door.

7. Press any button on remote for a minimum of 1 second. System should now lock and
unlock doors. Once to confirm programming, twice to indicate programming failed.

8. Repeat steps 5, 6 and 7 for additional remotes.

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1 Answer

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do you have a remote? sometimes when you have remote unlocks and lock with the remote and try to unlock manually(with key) the security system "thinks" its being picked and will not allow the vehicle to start or run.

if problem still occurs let us know and we will gladly get you through this

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