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Service theft system?

Tiny
TREY7887
  • MEMBER
  • 2004 CADILLAC DEVILLE
  • 168,000 MILES
The car starts for 3 seconds. Then shuts off. Saying starter disabled remove key. My battery keeps getting drained by some then staying on in the car. They say it could be the key or even the ignition switch. All I no it got towed. Was running before that. Then when picked up from impond. It stopped working and has been like that ever since. Please can you help
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Friday, August 23rd, 2013 AT 4:09 AM

20 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Try resetting security system see pic. then have battery checked for a drain these guides can help

https://www.2carpros.com/articles/how-to-reset-a-security-system

and

https://www.2carpros.com/articles/car-battery-dead-overnight

Check out the diagrams (Below). Please let us know what happens.
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Monday, April 1st, 2019 AT 10:19 AM
Tiny
PBUMPUS
  • MEMBER
  • 1 POST
  • 2004 CADILLAC DEVILLE
  • V8
  • 2WD
  • AUTOMATIC
  • 52,000 MILES
Could you please explain how this security system works and how can the system be bypassed? This car was recently stolen. How can system be bypassed?
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Saturday, August 29th, 2020 AT 1:54 PM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
The system cant be bypassed as far as I know. The only flaw is if there is a remote starter installed in vehicle, this can make it stealable.
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Saturday, August 29th, 2020 AT 1:54 PM (Merged)
Tiny
BUZZSAW
  • MECHANIC
  • 1,198 POSTS
[quote="PBumpus"]Computer problem
2004 Cadillac Deville V8 Two Wheel Drive Automatic 52,000 miles

could you please explain how this security system works and how can the system be bypassed? This car was recently stolen. How can system be bypassed?[/Quote

you cant get it fixed
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Saturday, August 29th, 2020 AT 1:54 PM (Merged)
Tiny
JIJUANAIR
  • MEMBER
  • 5 POSTS
  • 2003 CADILLAC DEVILLE
  • 100,000 MILES
The car wont start and I need to know is it possible to reset the computer on a cadillac deville 2003 or do I need to take to a dealer.
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Yes you can reset the security system by following this guide.

https://www.2carpros.com/articles/how-to-reset-a-security-system

Please run down this guide and report back.

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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
JIJUANAIR
  • MEMBER
  • 5 POSTS
The issue is dont see any error codes. The car just wont start up eventhough the battery is good. Its power windows also wont work. So I think I need to reset the computer. So can you please tell me if is it possible for me to reset the computer?
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The car just wont start up eventhough the battery is good. Is it cranking over and will not start or just won't crank at all/nothing when key is turn to cranking position
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
JIJUANAIR
  • MEMBER
  • 5 POSTS
The car wont crank and the power disappears when we try to crank. The lights in the dash all goes dead when try to crank.
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
If the codes are current u cant clear them until the fault is fixed. Youll need a obd2 scanner to read the codes and replace the parts so you can clear them.I would remove and clean the cable ends. Load test the battery. If its turning over try spraying fluid in the throttle body does it start?
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
MYLIFE143
  • MEMBER
  • 2 POSTS
  • 2001 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 97,000 MILES
The security light flashes like it should then goes out like it should, but when you unlock the door and try to start the car it will not. It is the key with a chip in it and has been checked by the dealer and is okay. What can I do to start my car?
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
When you unlock the door, and try to start the car, what is the security light doing? If it is on, there is a security system fault. If it is off, has it been determined if there is a signal reaching the starter. Could it just be a bad starter, or something in the start circuit?
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test the battery and connections
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
MYLIFE143
  • MEMBER
  • 2 POSTS
Yes, the security light does stay on when you try to start it. I, m on unemployment, short of having the car towed what can I do?
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
JIJUANAIR
  • MEMBER
  • 5 POSTS
We did it. All looks good. Thats why I thought we may have to reset the computer and I dont know how to do it.
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Enter diagnostics and read/report the trouble codes. You can accomplish this by pressing and holding 'INFO' in the up position, and the ON/OFF button at the same time. After a brief period of segment illumination, it will display ALL, on the info center. Press ON/OFF and it will display ALL CODES, press ON/OFF to select. Record the codes, we are particularily interested in VTD codes, and PCM codes.
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
There is no reset that is going to correct a no start. I am just going to throw this out there, but have you checked signal to the starter?
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
JIJUANAIR
  • MEMBER
  • 5 POSTS
Not yet I will do that and let you guys know tomorrow. Thannks in advance for all the help. Will post tomorrow
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
MISIMON
  • MEMBER
  • 1 POST
  • CADILLAC DEVILLE
I have a 2000 Cadillac DHS 4.6 engine with 56,000 miles. The keyless remotes and the memory seats fail to operate correctly. Some time they open the doors and sometime they don’t. The memory seats only work with remote access but that only works some times. I take it to a mechanic that charges me $35 to reprogram them but its not long before it dosn't work again. Can you tell me why I need to reprogram them so many times and can you tell me how to reprogram the remotes and memory seats on my own?

Thank you,
Mitch
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)
Tiny
BUZZSAW
  • MECHANIC
  • 1,198 POSTS
Did you replace the batteries? And you need a tech 2 to reprogram the key fobs, your fobs control the memory seats, fob 1 is for driver 1 and 2 etc.

Try batteries first and then new fobs
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Saturday, August 29th, 2020 AT 1:55 PM (Merged)

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