Renault Keys – How They Work

Renaults have a sophisticated system of immobilisers and keys. This can lead to replacement keys being a lengthy drawn out process. Unless you have access to the car and are able to bring it in to us to make a code using the diagnostic socket, it could be a very lengthy.


The Renault group is perhaps best recognized as a producer of buses, vans Lorries and tractors, but they do produce cars too. It is a reputable company which was established in 1899. They offer a wide assortment of car models. You’ll require a new key in the event that you are unable to locate or damage your keys to your car. Why not let us purchase one for you instead of waiting for your local dealer to order one and then waiting for it to arrive? We can replace your smart key or remote in a matter of minutes at KeyNOW.

If you need a Renault Clio V, Captur 2 or New Zoe spare key we can provide you with a mechanical code number to purchase your new key through the dealer. We can also reset your Renault Kangoo Traffic or Master key.

Renault has a long record of innovation. It was the first company to have utilized remote central locking on a production car. Paul Lipschultz invented this technology for Niemens, an automotive supplier of security components. This was a major leap for car safety.


The hands-free cards of Renault are still widely used in their vehicles despite the fact that smartphones appear to be replacing them. In fact, they’re present in two of the three vehicles Renault sells and their usage has increased in recent years. In this video Pascaline from the Product Division of Renault explains the way these cards work.

Renaults come with a complicated immobiliser system, which is why it’s important to be aware of the basics before you attempt to unlock a car without a key. renault key fob replacement come with an emergency lock that is located on the door handle for passengers that can be utilized in the event of an unreliable key or battery runout. This is an excellent option for those who do not want to pay for a locksmith.

You’ll require a device such as an a-slim jim or pump-up in order to remove the key fob. If you don’t have the tools, it may be necessary to utilize a screwdriver or hammer to remove the cylinder.

You should be able to go into the passenger’s door and you will see a tiny lock inserted in the driver’s side panel next to the handle. This is a measure of security to prevent people from stealing other vehicles or locking themselves into their own. It’s a simple but effective security feature that can save you time and hassle when you have to swiftly get into your vehicle.


Many modern vehicles use transponders to prevent car theft. These small devices are connected to the key fob, and they contain an electronic chip that communicates with the car when it is within the range. These chips use a code to identify the car and key.

The chip transmits the signal which is picked up by coils that are positioned around the barrels of ignition inside the vehicle. The coils are activated with the key and send an electromagnetic pulse to the chip. The chip responds by sending back an unique identification code to the car. The unique code is used to unlock the doors and begin the engine.

During World War 2, a similar technology was used to aid air traffic control identify military aircrafts using radar. The aviation industry still utilizes this kind of chip message.

These systems were believed to be clone proof, until recently. This was due to the fact that there were only 74 Quadrillion (74,000,000,000,000,000) possible codes for each transponder. However, the technology behind these chips has been upgraded and they are now no longer completely invulnerable to cloning. This has led to many auto locksmiths to improve their skills by learning to read, write and program these newer kinds.


The Renaults are very complicated in the way that they operate with regard to their immobilisers and keys. There are two major systems that affect how the new key is programmed into the car. The older system employs a “kill switch” to disable a vital part of the car’s starting mechanism if the correct key is not present. They are very delicate and will need a skilled technician to determine and correct the issue if they fail.

The latest system is easier to use. It uses advanced encryption and rolling security codes to prevent copying the code from the ECU or key. This is the method that will be used in the replacement keys we provide.

Some models use rings that are specific to their vehicle and isn’t detected by standard transponder scanners. This is a highly effective way to prevent hotwiring, and it’s also difficult to bypass with an ordinary key or transponder emulator. We have a special product dubbed the Renault Antenna Emulator (RAE) that can be used to disable this kind of immobiliser on Renault Clio phase 2 models and in some Renault commercial vehicles fitted with ID46 transponders. It replicates the operation of a functioning key transponder within the ring antenna. It can be used to replace lost or failed keys without removing the ECU. It has been tested by Thatcham and certified to provide additional peace of mind for customers of motor insurance.

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