Car won't start after putting new battery in, displays Theft deterrent armed.

Starting Disabled (Due To Theft System)
Refer to Theft Systems Description and Operation in Theft Deterrent
Starting Disabled (Due To Electronic Throttle Control)
Refer to Throttle Actuator Control (TAC) System Description in Engine Electrica

replaced deterrent system on ignition replace battery new alternator can't get car started ???? Your a parts changer not a technician . Do yourself a favor an take it to a qualified repair shop , one that know's to hook up a factory or some other type professional scan tool an check for DTC'S - diagnostic trouble codes in the theft deterrent control module . An after changing the module it needs to be programmed . DEALER

Content Theft Deterrent (CTD) Description and Operation When armed, the content theft deterrent (CTD) system is designed to deter vehicle content theft by pulsing the horns and exterior lamps for approximately 30 seconds when an unauthorized vehicle entry is detected. However, the CTD system does not affect engine starting.
An unauthorized entry can be any of the following with the CTD system armed:
• When any door is opened without first being unlocked using the UNLOCK command from the keyless entry transmitter
• Unauthorized entry into the underhood area (if equipped)
• Unauthorized entry into the rear compartment
• After a battery reconnect, if the battery was disconnected with the CTD system armed
The components of the CTD system are:
• Body Control Module (BCM)
• Remote Control Door Lock Receiver (RCDLR)
• Security indicator
• Door ajar switches
• Rear compartment lid ajar switch
• Hood ajar switch (if equipped)

Arming the CTD System
Use the following procedure in order to arm the system:
Place the shift lever in P (park).
Turn OFF the ignition.
Open any door.
Important: The system is not armed if the doors are locked manually; the remote keyless entry transmitter must be used to arm the content theft deterrent (CTD) system.
Lock the doors using the LOCK button on the transmitter. The system is in standby mode and will not start the arming timer until all doors are closed.
The system will begin the arm sequence immediately after the last door is closed. If the keyless entry transmitter is used to arm the system after the vehicle doors are closed, the arm sequence will begin as soon as the LOCK command is received by the transmitter.
Locking the Vehicle Without Arming the CTD System
Locking the vehicle may be accomplished without arming the content theft deterrent (CTD) system. Use of the manual door locks or using the key to lock the doors will lock the vehicle, but will not arm the CTD system.
Disarming an Armed System/Silencing an Alarm
If system arming has been requested by the keyless entry transmitter, it must be disarmed.
Important: Using the power door unlock switch or manually unlocking the doors does not disable the content theft deterrent (CTD) arm mode. Also, disconnecting the battery or pulling fuses does not disable the arm mode, since the BCM stores the CTD mode status in memory.
• To disarm the CTD system in standby mode, perform one of the following:
- Press the UNLOCK button on the keyless entry transmitter.
- Insert a valid key into the ignition and switch to the ON position.
• To disarm the CTD system in the armed mode (non-event) or when activated (during an alarm event):
Press the UNLOCK button on the keyless entry transmitter.

A weak battery will cause a multitude of problems. Best thing to do is to start with that. Have a auto parts store load test the battery.

It does it automaticly after car is locked ,so many seconds and the immobilisor is armed ,unless you have one of them weekend boy racer gizmos ,if you have then heaven help you when it packs up which it will ,what they called in america a viper or something .put the car in the garage and you will not have any problems and never leave anything in the car ,clear the junk out the garage first though its a garage for the car not a pool room or store room neither a granny annex .

there is one wyre you can cut coming from the computer check itrenet taht will disable antitheft everything else will work properly that will let you no if it is the anti theft

STARTING DISABLED REMOVE KEY
Refer to Theft Systems Description and Operation in Theft Deterrent

STARTING DISABLED REMOVE KEY
The radio illuminates the STARTING DISABLED REMOVE KEY message when the VTD system has disabled the starting system. The radio receives a message from the theft deterrent control module via the serial data circuit requesting illumination.

Your best bet ,take it to Cadillac dealer and have it checked . Could have DTC'S - diagnostic trouble codes
DTC B1015
DTC B1016
DTC B3031
DTC B3055
DTC B3060
DTC B3090
DTC B3935
DTC B3976
DTC P1629
DTC P1630
DTC P1631

The theft deterrent module or the insturment cluster or the ECM is not seeing correct info.
The vehicle theft deterrent (VTD) system functions are provided by the theft deterrent control module. When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, the transponder embedded in the head of the key is energized by the exciter coils surrounding the ignition lock cylinder. The energized transponder transmits a signal that contains its unique value, which is received by the theft deterrent control module. The theft deterrent control module then compares this value to a value stored in memory, learned key code. If the value is correct the theft deterrent control module sends a random generated number to the transponder, this is called a challenge. Both the transponder and the theft deterrent control module perform a calculation on the challenge, if the calculations match the theft deterrent control module sends the fuel continue password via the serial data circuit to the Engine control module (ECM). If either the transponders unique value or the calculation to the challenge is incorrect the theft deterrent control module will send the fuel disable password to the ECM via the serial data circuit. The components of the VTD system are as follows:
• Theft deterrent control module
• Engine control module (ECM)
• Ignition key (Transponder)
• Ignition lock cylinder
• Security indicator

Sounds like a bad ignition switch have ur body control module checked for codes if u have a B2960 and or B3033 then replace the ignition switch.

SECURITY
If your vehicle has the remote keyless entry system, this feature allows you to select the method used to arm the vehicle's security system. When SECURITY appears on the display, press the reset button to scroll through the available settings:
* RKE (Remote Keyless Entry) (default): The content theft-deterrent system will arm when the lock button on the remote keyless entry transmitter is pressed or when the power door lock switch is pressed.

* PASSIVE: The content theft-deterrent system will arm itself 60 seconds after the ignition has been turned off and all of the doors have been closed.


Hopd this help (remember comment and rated this).

The theft system is controlled by the BCM (body control module), located behind the glovebox. BCM codes and igniton key module codes must match. Did you have make sure the code generated by the key is a match for the BCM , if not the car will not start. Pellet in key is a resister that has to match the resister setting in the BCM. It is not the keyway module that starts the car,,it is the BCM.

u need the owners manual. it tells how to change the theft deterrent system.