Car transponder key: everything you need to know

In this article we will tell you what a transponder chip is, namely: the principle of operation and what to do if the car key transponder is not working.

Car key transponder chips are electronic components that are used to protect a car from theft. Their main function is to identify the car key and transmit this information to the ignition system.

Each transponder chip contains a unique code that is programmed for the corresponding car key. Some car manufacturers use special transponder chips for additional protection of cars. For example, such systems may require an additional access code to start the engine or turn on the alarm when an attempt is made to hack the ignition system.

In general, the transponder is an important element of car security, allowing the risk to be reduced of its theft.

How does car key transponder chip work?

The transponder contains a microprocessor, antenna and memory for storing information. When working with a transponder chip, the sensor on the car sends a radio signal at a frequency of 125 kHz and 433 MHz for smart keys.

The chip built into the car key receives this radio signal and sends back information with the access code to the car.
The sensor on the car receives this information, and if the code is correct, the car starts. If the code does not match, the ignition system will not allow the car to start.

The most common types of transponder chips

The most common types of transponder chips for car keys are:

• Texas Instruments (TI) Transponder Chip – This is one of the most popular transponder chips used in the automotive industry. It contains a unique identifier and allows the car key to be identified when accessing the ignition system.
• Megamos Crypto – Used in many European cars. It includes a 96-bit code that allows the car key to be identified.
• Philips Crypto – This is a transponder chip used in most American and Japanese cars. It contains a 40-bit code and also allows the car key to be identified.
• NXP Semiconductors – This chip manufacturer also has a wide range of products for car keys used in different car models. Their chips provide security and anti-theft protection, and can also contain additional features such as remote control and others.
• Infineon Technologies – The chip manufacturer specialises in automotive security and protection products. They produce transponder chips for wireless keys, alarms and other security systems.
• Atmel Corporation – has a wide range of products for car keys that provide security and theft protection.

All of these manufacturers have their own unique technologies and products that allow automakers to create safe and reliable ignition systems for their vehicles.

Transponder key replacement near you

If you have a situation where you need a transponder key replacement, call us at Phoenix Car Keys and we will solve the problem quickly and efficiently.

Usually, the transponder key replacement cost is a little more expensive than a duplicate of a regular key, but we always go to meet our customers and strive to offer the best prices.

To get more information or to order the service, call us on 03330065210 (available 24 hours).