Question about 2003 Cadillac Sts

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2003 Cadillac Seville Key Fob

I just purchased a 2003 Cadillac Seville STS and the key fob needs programming. I have no owner's manual. Can you tell me how this is done?

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  • Anonymous Mar 12, 2014

    Both of my keys were not being recognized so I tried to reprogram them. Everything works step by step until it gets to the final prompt saying "Ready for key fob 1" then it does nothing.

  • Anonymous Mar 18, 2014

    Help! My car key or fob will unlock or open any part of my 1999 Cadillac Seville STS

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At the dealership with a computer.

Posted on Mar 11, 2009

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1 Answer

"Starting Disabled Due to Security Problem." on my 1997 Cadillac Seville SLS. Please tell me exactly what to do to override this message and successively start my Cadillac?


your anti theft device is activated,you need to lock and unlock your doors a couple times with the key fob,not the key,and then you need to put the key in the ignition and start it,if you dont have your key fob,call your car dealer to get a new one,they are programmed for each car only,you cannot bypass it.

Jun 09, 2015 | Cadillac Seville Cars & Trucks

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Program new key fob for Cadillac cts 2003


There are several methods of doing this - but your 2003 requires that you either go to the dealer for them to add a FOB with special equipment (ask if they'll do it for free - can't hurt). If you have time to kill, you can do it yourself with Method 3 as described and found at:

Key Fob Reprogramming General Cadillac Forums

Method 3 - Key Fob Auto Learn


This procedure will first erase all known key fobs. The procedure will then program a single or multiple key fobs. Method 3 is a series of three 10-minute key cycles, for a total of 30 minutes. This procedure requires that you have a replacement key fob and the vehicle mechanical key.

Important: All previously programmed key fobs will be erased upon completion of the 30-minute programming procedure. The order in which the key fobs are programmed will determine its numbering position within the RCDLR memory. The first key fob programmed will be key fob #1, and the second key fob programmed will be key fob #2. The number stamped on the key fob case is for reference only: #2 can be programmed as #1.
Do not place any known good key fobs in the vicinity of the vehicle when programming with Method 3. If the RCDLR recognizes a known good key fob during Method 3 programming, the programming mode will resort to Method 1.


The vehicle must be OFF.
Place the replacement key fob in the console pocket with the buttons facing forward.
Insert the vehicle key in the driver door lock cylinder located in the driver door handle and cycle the key 5 times within 5 seconds.
The DIC will display a message: OFF/ACC TO LEARN.
Press the OFF/ACC portion of the ignition button.
The DIC will display a message: WAIT 10 MINUTES, then it will count down from 10 to 0, one minute at a time.
When the counter reaches 0, DIC will display OFF/ACC TO LEARN.
Repeat steps 5-7 two more times, for a total of 30 minutes.
The DIC will display a message: OFF/ACC TO LEARN.
Press the OFF/ACC portion of the ignition button.
A beep will occur and the DIC will display: READY FOR FOB 1. At this time all previously known key fobs have been erased. When fob 1 is programmed a beep will be heard and the DIC will display a message: READY FOR FOB 2.
Additional key fobs can be programmed by taking fob 1 out of the pocket and inserting fob 2. If desired, up to 4 fobs can be programmed. Once 4 fobs have been learned, the DIC will display a message: MAX FOBS LEARNED, and automatically exit the program mode.
If learning less than 4 key fobs, press the OFF/ACC portion of the ignition button to exit the program mode.
Operate the active portion of each key fob in order to finalize the programming sequence and verify correct system operation.

Good luck!

Feb 25, 2015 | 2003 Cadillac CTS

1 Answer

Where is a nuetral safety switch located on an 2006 Cadillac STS. I just bought this car from and auction, there was no key. So I got one made, tried to crank and it says it's in as accessory mode then...


It probably thinks you're trying to program a key & fob. I really don't think you can just 'make' a key - I think it needs to be a regulation key fob + key for that particular car - security features and such.

Feb 04, 2015 | 2006 Cadillac STS

1 Answer

My key fob has quit working and it tells me no key fob detected. My car is a 2006 Caddie STS. Both fobs have stopped working.


Mine did the same thing. I put the fob into the reprogramming slot located in the center console and was able to get it started by leaving the in the slot. Hope it works for you.

Sep 11, 2011 | 2006 Cadillac STS

1 Answer

My 2006 cadillac sts key fob all of a sudden is not working it says no fob detected and i have the fob what can b wrong??


Check the fob battery you might need to replace it, The battery only has about a 3 year life

Sep 19, 2010 | 2006 Cadillac STS

4 Answers

My 2006 cadillac sts key fob all of a sudden is not working it says no fob detected and i have the fob what can b wrong??


Some late model fobs contain electronics beyond the push buttons.
Batteries are replaceable...small screws may let you do this.
If the battery is not the cause....a replacement fob may be expensive. A road service technician can probably troubleshoot and replace cheaper than dealer !

Sep 07, 2010 | 2006 Cadillac STS

1 Answer

My husband and I have a 1994 Cadillac Seville STS with a trunk release malfunction. We have tried to open the trunk by inserting the key in the lock, but the key will not turn. Until today, we were...


Does the key you have open the driver door? Do you have a keyless entry key fob, does it work? you also might try removing the glove box and disconnecting the wires from the trunk button and touching them together with a paper clip or other small wire but before you do that look in your owners manual a determine which fuse is for the trunk release and check the fuse then the last would be to have GM dealer check to see if the key you have is the proper key fror your car and if it may be worn out

Aug 29, 2010 | 1994 Cadillac Seville

1 Answer

How do you charge the key fob.. The message on the dash saya that the key fob battery is low.


The key fob does not get charged. Instead you replace the battery inside the Fob. if you look behind the fob it tells you what battery it needs for replacement. CR2032

Dec 29, 2009 | 2005 Cadillac STS

1 Answer

Programming a keyless entry remote


Key Fob Auto Learn
This procedure will first erase all known key fobs. The procedure will then program a single or multiple key fobs. Method 3 is a series of three 10-minute key cycles, for a total of 30 minutes. This procedure requires that you have a replacement key fob and the vehicle mechanical key.

Important: All previously programmed key fobs will be erased upon completion of the 30-minute programming procedure. The order in which the key fobs are programmed will determine its numbering position within the RCDLR memory. The first key fob programmed will be key fob #1, and the second key fob programmed will be key fob #2. The number stamped on the key fob case is for reference only: #2 can be programmed as #1.
Do not place any known good key fobs in the vicinity of the vehicle when programming. 

The vehicle must be OFF. 
Place the replacement key fob in the console pocket with the buttons facing forward. 
Insert the vehicle key in the driver door lock cylinder located in the driver door handle and cycle the key 5 times within 5 seconds. 

The DIC will display a message: OFF/ACC TO LEARN. 
Press the OFF/ACC portion of the ignition button. 
The DIC will display a message: WAIT 10 MINUTES, then it will count down from 10 to 0, one minute at a time. 
When the counter reaches 0, DIC will display OFF/ACC TO LEARN. 
Repeat steps 5-7 two more times, for a total of 30 minutes. 
The DIC will display a message: OFF/ACC TO LEARN. 
Press the OFF/ACC portion of the ignition button. 
A beep will occur and the DIC will display: READY FOR FOB 1. At this time all previously known key fobs have been erased. When fob 1 is programmed a beep will be heard and the DIC will display a message: READY FOR FOB 2. 
Additional key fobs can be programmed by taking fob 1 out of the pocket and inserting fob 2. If desired, up to 4 fobs can be programmed. Once 4 fobs have been learned, the DIC will display a message: MAX FOBS LEARNED, and automatically exit the program mode. 
If learning less than 4 key fobs, press the OFF/ACC portion of the ignition button to exit the program mode. 
Operate the active portion of each key fob in order to finalize the programming sequence and verify correct system operation. 

Good luck and hope this help's keep me posted, there are 3 other methods and the 5th method is a tech 2 scan tool that the dealer uses but this should work on your year of cadillac. 

Jul 01, 2009 | 2003 Cadillac Deville

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