The cars in the modern world are not merely machines that assist us to move through places. They are full of intelligent safety features that aim at safeguarding the driver and the car. The theft deterrent system is one of such crucial security features that are applicable in preventing unauthorized access and stealing of vehicles.
This system can, however, fail at times and it will give a warning on the dashboard which reads as Service Theft Deterrent System. This may be disorienting and even frustrating when this message comes up, particularly when the car does not start.
We will answer this question in this guide by providing your answers to the following questions; What is the service theft deterrent system, what is the message, and how do you reset or fix the message using simple steps.
The theft deterrent system is a security technology fitted in the modern cars to avoid theft or break-ins.
This system operates with a number of components which include:
- Vehicle sensors
- Engine immobilizer
- Key fob chip
- Car computer system
In case suspicious activity is detected by the system, e.g. forced entry or an attempt of the use of an unknown key, the system may:
- Trigger the car alarm
- Disable the engine
- Issue a warning on the dashboard.
Mostly, the alarm will not be switched off unless the proper key or key fob is swapped.
Though this feature enhances security of a vehicle, it occasionally goes off wrong because of technical problems.
Why Does the Car Say Service Theft Deterrent System?
Whenever this message is displayed on the dashboard, then it is normally an indication that the car has suffered a security system problem.
This warning is displayed on the computer of the vehicle to enable the driver to detect and resolve the problem within a short time.
These are some of the typical causes of this occurrence.
Dead Key Fob Battery
A faulty or defective key fob battery may make the car fail to detect the key. The system can suspect that one is attempting to open the car using a non-authenticated key.
Car Battery Issues
The theft deterrent warning may be activated by a low or discharged car battery which may mislead the electronic system of that vehicle.
Faulty Door Lock
In case the door lock cylinder is broken or modified, the system can track it and see it as the possible break-in attempt.
Defective Immobilizer Chip
The key of modern cars has a small chip, which interacts with the security system of a car. In case of a malfunction of this chip, the engine can be prevented to start.
Service Theft Deterrent System: What to do about it
In case the alert is displayed on your Dashboard, you can try a number of easy procedures before going to a mechanic.
The 1st method: Check the Key Fob and Door Lock.
Step 1: Check the battery of the key fob
Change battery in case it is dull or exhausted. The key and the car can be communicated again with a new battery.
Step 2: Check the door lock cylinder
Check the door handle or lock area there must be signs of damage. The system might be activated in case the lock has been forced or tampered with.
Step 3: Use the correct key
osnnnnnnnnnnn only open the door but not the engine since they do not have the right security chip.
Procedure 2: Reset pioneer with the Ignition.
This technique is effective to most vehicles.
- Step 1: Put in the key in ignition.
- Step 2: Switch to the ON/ACC or the OFF position without necessarily starting the engine.
- Step 3: Keep the key in the same position between 10 and 15 minutes.
- Step 4: Switch off the ignition key and take off the key.
- step 5:Wait a few seconds and turn on the car.
This will enable the vehicle computer to read the key once again and a security system is deactivated.
Technique 3: Physical Key: Opening the Door.
A physical key is still hidden in the key fob of many of the modern cars.
Step 1: Eject the physical key of the fob.
Step 2: Introduce it into the door lock of the driver.
Step 3: Keep the key in the unlocked position between 30-45 seconds.
Step 4: Start the vehicle.
The move sends the signal to the system to confirm that the rightful owner is using the vehicle.
How to Disable an Anti-Theft without a Key Fob
In case you have lost your key fob or you have run out of battery, you can refer to the following instructions: See owner manual of vehicle on security reset instructions.
To open the doors, press the interior power lock button and open the door. To close the door, press the power lock button and close the door.
Switch on the ignition key and leave it on several minutes.
- Take out alarm fuse where required.
- The last thing is to disconnect the car battery.
These measures will temporarily prevent the anti-theft alarm until the problem is addressed.
Frequently Asked Questions (FAQs)
What causes the theft deterrent system to be activated?
The system may be triggered by forced entry, motion sensors, impact, battery depletion in dead key fob, or faulty sensors.
Is the anti-theft system able to start the car?
Yes. The system can also disable the engine when it identifies a security problem to ensure it is not stolen.
What is the recovery time of the system?
The typical time of most ignition reset techniques is 10 to 15 minutes.
Does it have an anti-theft system fitted?
Yes. Most cars have alarm fuse in the fuse box which supplies power to the security system.
Why will the notice be given when the battery has been changed?
In some cases, the security system in the car requires resetting after changing the battery which requires relearning the key.
Disclaimer: The article is informational in nature. The security system in vehicles might also differ according to the manufacturer and model. You should also never attempt to make any type of repairs or alterations to the electrical or security system of your car until you have verified that your vehicle owner manual directs you to do so, or a qualified auto tech has advised you to do the same.
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