How To Disable Transponder Key System Without Key? A Detailed Guide

Introduction

A transponder key is among the most important vehicle parts, as it ensures your car’s safety.

Due to that reason, the price for such isn’t cheap. Imagine if you accidentally lost it; you might have to pay a large amount of money to mechanical engineering services for a similar one. 

Fortunately, you can save your budget after learning how to disable transponder key system without key in our article.

How Do Transponder Keys Work?

Thanks to its excellent theft protection, the chipped one is one of the most desirable automotive technologies available today for most motor vehicles.

Basically, the car manufacturers integrate the special chip into the car keys. In more detail, this chip locates inside its head.

The manufacturers will program each one with a specific serial number for different vehicles. Hence, you won’t have to worry if someone tries to use their chipped to crack your immobilizer system.

Car Key is sending Signal to the Vehicle
Car Key is sending signal to the vehicle

Here’s how the vehicle technology operates.

  • When you insert the chipped into the ignition, it sends a radio frequency to communicate with your vehicle’s Electronic Control Unit (ECU).
  • If this signal matches the encoded signal on the vehicle computer system, you can easily start the car in seconds.
  • Conversely, if anything goes wrong, you can’t disable the immobilizer system, which means running your vehicle is impossible.

Car Manufacturers Employ Transponder Keys

With its advent in the 90s, the automotive industry turned a new page. The chipped has provided a strong layer of security for almost all vehicles.

Leading vehicle manufacturers, including BMW, Chevrolet, Chrysler, Ford, Nissan, Toyota, etc., now offer vehicles with built-in transponders.

One of the pioneers to apply this technology was Ford when they started using transponders in 1996. More impressively, the F-150 series manufactured between 1999-2003 all integrated standard transponders, thereby enhancing the security of this vehicle.

The Wrangler Jeep also started using this product in 1998 as an option for their high-end engines. However, from 2007 onwards, Jeep applied the chipped to all their cars.

While other automakers have developed their own transponders, you may be surprised if you know The Chrysler Crossfire adopts Mercedes’ system.

Nissan cars have the same technology as Jeep, as their transponder is optional. You’ll have to consider model options and trim levels to see if Nissan transponder key bypass.

One of the easiest ways to determine if the car keys are chipped is to contact their dealership or locksmith directly.

Start engine of the car

The variety of car models makes this type of lock gradually more complicated. Here are some of the options you’re likely to encounter in today’s newer vehicles.

  • Regular: This type of lock is usually used with older cars. The remote control is separate.
  • Remote: The transponder with a built-in remote control feature makes it more convenient for you to carry your keys.
  • FOBIK chip: An emergency key blade is used for the door lock.
  • Smart key: It has a built-in button and an emergency key blade inside.

How To Disable Transponder Key System Without Key?

As mentioned above, the chipped provides absolute safety for your vehicle. Yet, if you lose it, starting the car is truly a nightmare for you.

So, how to bypass transponder without key?- You can disable transponder ignition without key by utilizing the key fob.

Your anti-theft system will respond to the signals from that fob when they connect. Thus, you can disable the immobilizer just by using it.

keep safe your key

Note: Before performing a system reset, you need to ensure that the battery capacity in the fob is full. So, it can work properly to send a signal to the chipped.

Here are the simple steps for you to replace the battery for it.

Step 1: Use a flat piece of metal to open the fob.

Step 2: Look in the battery compartment to see if the battery is in the correct position. Also, use the multimeter to check its health.

Step 3: Replace a new one if you detect bad battery condition.

Another alternative you can try is to disconnect the immobilizer from the power source. This method will probably work, yet it comes with risks related to the car’s safety. Therefore, you should carefully consider whether to choose this way.

How To Program A Car Key Without The Original?

Before getting the answer to the question “How do you program a transponder key without original?”, you should understand the Passive Anti-Theft System (PATS) of your land vehicles.

Vehicles with PATS 1 systems will be easier to set up for car key transponder programming. If your car employs PATS 2, you must have car key programming machines to carry out such a process.

How to program car key without original?- Here are the steps you can follow to reprogram transponder key.

set program a transponder key

Originate A Key

Step 1: Put it in the ignition.

Step 2: Turn the ignition switch into the RUN position. At the same time, the security light will turn on. 

Step 3: Wait exactly 15 minutes. After this time, the security light will turn off. 

Step 4: Within 3 minutes after that light goes out, you need to put it in the OFF position. Then, please return it to the RUN position again. At this time, the light will stay on for another 15 minutes.

Step 5: Repeat the actions as in Step 4. Now, after 45 minutes, you have successfully originated a key.

Duplicate The Programmed Key

Step 1: Put the programmed one into the ignition.

Step 2: Turn the ignition into the RUN position and wait 5 seconds. Then, please turn it off.

Step 3: Repeat Step 2 with the other already programmed one. After that, you can hear a chirp.

Step 4: The vehicle’s in the programming mode. Take your new one and place that into the RUN position for 5 seconds. When you hear a chirp, you will have a new duplicated one.

Now, you’ve learned how to program a transponder key without original, right?

FAQs

How Can I Know If My Car Key Has A Transponder?

There are many ways to tell if the keys are chipped ones.

You can ask the dealership the type you own by providing your vehicle’s information.

Also, try putting it in the ignition and starting the car. If your vehicle doesn’t have an anti-theft alarm, you can ensure your key is the right one.

Is Bypassing Possible?

So, how to bypass a transponder key? With the help of a transponder key bypass kit and transponder key bypass diagram, you can completely bypass transponder without key. Yet, you need to ensure such action doesn’t violate your car’s warranty.

Or, you can ask the locksmith to produce a spare transponder for you if you’re not sure you can make it yourself.

Can I Program A Transponder Key Myself?

Of course, you can completely program the chipped yourself as long as you follow the required procedure.

The process is not too difficult, yet please pay attention to your vehicle type to choose the right car key programmers.

Also, after you program the chipped, it will only activate your vehicle.

If you are unsure about your skills, you might take it to a reliable garage for transportation engineering. The engineers can fix this problem and check other parts, such as the antifreeze and radiator.

Final Words

We hope you are satisfied with the above answers for “How to disable transponder key system without key?” This process is certainly no longer a difficult problem for you with our step-by-step instructions.If you still have any questions regarding these manufactured goods, do not hesitate to contact us. Thanks for reading!

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