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6 Solutions for Troubleshooting Transponder Key Problems

Our locksmiths at Pro Locksmith Goodyear of Goodyear, Arizona, have customers call us all the time regarding issues with their vehicle transponder keys. Maybe they’ve stopped working or are only working some of the time. While transponder key technology has been hugely helpful in lowering the rates of vehicle thefts and break-ins, this specialized technology can have complications if something goes wrong. We’ve compiled this list of common transponder key issues that people face on a regular basis and the best solutions for fixing them. When it doubts, contact our locksmiths for further assistance. 

What is a Transponder Key

If your vehicle uses manual locks and keys and was manufactured in the last two decades, you’ve probably been using a transponder key this whole time without realizing it. Transponder keys usually have a plastic fob (head) which houses a microchip that gives these keys their name. The microchip is programmed to be linked to your car or truck by being programmed with a matching code that is unique to your specific vehicle. Transponder keys don’t make a difference when it comes to locking or unlocking your doors, as the focus of their security protection is the ignition system. The role they play there is significant. 

When you insert your transponder key into the ignition to start your car, the key and your ignition system speak to each other via radio signals sent back and forth between the two components. Your engine’s computer needs to match the code sent from the microchip in your transponder key or it won’t recognize the key. When this match is validated, your vehicle will disengage the immobilizer, allowing your vehicle to start up.  

Transponder keys were developed in the mid-1990s in response to rising vehicle crime rates. Manufacturers needed a cost-effective solution to match this threat. At the time, transponder keys were upheld as an exciting innovation in vehicle security, and in fact, their implementation was instrumental in lowering auto theft and similar crime rates. Since that time, transponder key technology has become widespread. In recent years, this type of vehicle antitheft technology has been overtaken by keyless entry systems, and vehicles with transponder keys are becoming less common. However, many vehicles on the road still utilize this technology to keep them safe from intrusion.

 

  • The Ignition Doesn’t Start When You Insert Your Key   

If your key fits into your ignition cylinder and seems to turn like it normally does without obstruction, but your vehicle refuses to fire, it may be the case that the transponder chip inside the key has lost its programming or that it has become scrambled. Your transponder key will either need to be reprogrammed or replaced in order for you to continue using your vehicle, assuming you don’t have a spare handy. You don’t have to contact a dealership, however, as many locksmith companies are capable of performing this service on a 24-hour basis at an affordable price. Make sure you don’t try to force the key, as this is ineffective and may cause the key to snap off in the lock.  

  • Damage Has Happened to the Key Fob   

Whether you accidentally dropped your key from a high height, such as off of your balcony, or you merely stepped on it at the wrong angle, visible damage to the plastic head of your key often means the chip inside is also damaged. It might not automatic mean this, however, so even if your key seems mangled, it still pays to not assume it’s worthless and try to operate your vehicle. Of course, even if the key works, there’s no guarantee that it won’t deteriorate fast, so it’s always best to have a damaged key replaced. This goes for damage to the teeth of the key, as well, as not only can that make your transponder key stick in the ignition lock, but the lock cylinder itself can be damaged by broken or bent teeth. 

  • The Ignition Cylinder is Jammed   

Usually this can occur if dust or dirt from the air or on your key gets inside the cylinder and compacts as you use your key. If you ever use your key for other purposes than what it’s intended for, such as to open packages, grime can collect on the teeth of the key, which can then transfer into your key cylinder. It’s recommended never to use a key for this or any other purpose that does not involve your vehicle. It may also be helpful to clean out your ignition lock occasionally with a can of compressed air to keep it clear.    

  • Your Misplace Your Transponder Key or It Is Stolen   

While this is obviously not a problem that is limited exclusively to transponder keys, a transponder key going missing or getting stolen is a bit more serious than a simple type of key. A house key is very easy to duplicate, but a transponder key requires specialized equipment and training to make a copy. The price for transponder key programming can vary widely, too, depending on the service provider you choose to have the service performed.  

  • Your Transponder Key is Stolen   

Having your transponder key stolen is a bit more complicated of an issue, as anyone that possesses your key can theoretically open and operate your vehicle if they have physical access to it. That’s why our locksmiths recommend that if your transponder vehicle key was stolen you have your locks changed or rekeyed to ensure that unauthorized access or theft does not occur. 

  • Your Transponder Key Only Works Part of the Time  

This last problem can also be attributed to an issue with the programming. It could also be caused by a malfunctioning in the wiring that connects your ignition cylinder to the vehicle’s computer, or the internal antennae. In this case, contacting a certified locksmith professional, such as our automotive locksmiths, is the most direct course of action to ensure that you have a satisfactory resolution to the problem at an affordable cost. 

 

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Pro Locksmith Goodyear

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Dispatch Address: 250 N Litchfield Road, Suite 265, Goodyear, AZ 85338
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Email: service@locksmithgoodyear.com
Phone: (623) 505-2094