What to Know About Car Key Programming
The components of a car's start system involve the key bearing, a transponder chip, the engine control module, and the immobilizer module.
In the past, starting a car involved a regular key inserted into the car door and the ignition. While some cars still function this way, technological advancements have brought about more complex keys, including immobilizer systems and transponder chips to boost security.
With such keys, car key replacement is relatively simple and only requires the services of an expert locksmith to program the keys. Here are some things to know about car key programming:
Understanding how the car start system works
The components of a car's start system involve the key bearing, a transponder chip, the engine control module, and the immobilizer module. The transponder chip has the password, which the immobilizer system needs. In turn, the immobilizer connects to the engine control module.
Pressing a button on the key starts the car. The transponder within the key sends a signal to the car ignition system receiver. This signal should match the immobilizer password. When successful, the engine control module can turn the ignition on.
Programming keys
One can order a replacement from the car dealership if keys are lost or misplaced. This can take time, and getting a new set is costly. So, consider contacting a locksmith to help with car key programming. This process is done on a blank transponder added to the key and programmed to match the immobilizer system. Types of key programming include:
Onboard programming, where a spare key is used to program the new one.
Onboard Diagnostic 2 programming is ideal for some more sophisticated models.
EEPROM (Electrically Erasable Programmable Read Only Memory) programming
These methods are complex and should only be handled by skilled professionals. A wrong step may cause the car to stop functioning.
Time taken to program
The time it takes to program the key depends on the car and the complexity level of the system. Professionals may take a few minutes, while some projects may take a few days. The programming method may either hasten or slow down the process.
What affects the cost of programming a car key
Several factors determine what car key programming costs. The biggest ones are the make, model, and year of the vehicle, and the type of key involved — a basic transponder key is far simpler to program than a proximity or smart key, which needs more equipment and more time. The programming method matters too: onboard programming is quicker than an EEPROM job.
Where the work is done also makes a difference. A dealership may charge more than a locksmith for the same key, and a mobile locksmith comes to the vehicle, which saves the cost and hassle of towing it in. For an accurate quote, call with the year, make, and model on hand.
Get professional locksmith services
Car programming shouldn't be treated as a DIY project, even if it seems to be a cheaper alternative. To minimize the risks involved, consult a professional locksmith with knowledge of car key replacements and car key programming services.
National Lock & Key is a licensed, insured, full-service commercial and residential locksmith serving Northern Virginia and Washington D.C. Contact us at (571) 449-6495.