Renault Keys – How They Work

Renaults have a complicated system for immobilisers and keys. renault clio key replacement cost could result in replacement keys being a long drawn out process. If you don’t have access the car and are able to bring it in to us to make a code using the diagnostic socket, it will be very time-consuming.


The Renault group is recognized as a producer of vans, buses, tractors and Lorries although they also manufacture cars. It was founded in 1899 and is a huge and well established company with an extensive range of automobile models. You’ll need a new key in the event that you have lost or damaged your car keys. Instead of waiting for your local dealer to order a replacement one for you and then wait even longer to have it arrive, why don’t you let us take care of it? At KeyNOW we can replace a remote or smart key for you quickly.

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

Renault has a long track record of innovation. It was the first company to implement remote central locking in production vehicles. Paul Lipschultz invented this technology for Niemens, an automotive supplier of security components. This breakthrough was a massive leap for car safety.


Despite the fact that smartphones are on the verge of replacing their hands-free cards, the hand-free cards from Renault are still widely used in their vehicles. In fact, two out of three Renault vehicles have hands-free cards. The use of them has increased in recent years. In this video, Pascaline of Renault’s products division explains the main components of these cards and explains how they work.

Renaults have a fairly complicated immobiliser system, which is why it’s crucial to know the basics before trying to unlock a car without a key. Some cars come with an emergency lock on the handle for the passenger door that can be utilized in the event of the key not working or a battery drain. This is an excellent option for those who don’t wish to pay for a locksmith.

You’ll need a tool such as a slim jim or a pump-up to remove the key fob. If you don’t have these tools, it might be necessary to use a hammer and screwdriver to take the cylinder out.

You should be able to go into the passenger’s door and see a tiny lock inserted in the driver’s panel next to the handle. This is a safety feature to keep people from locking themselves in their own vehicle or accidentally stealing a neighbour’s. This is a basic but effective security feature that can save you time and hassle when you need to get into your vehicle.


Transponders are used on many modern vehicles to guard against car theft. These tiny devices, which are attached to the fob of the key, contain a chip and communicate with the car when it is within of. These chips employ a code to identify the car and key.

The chip emits an electrical signal that is picked up by two coils that are placed around the ignition barrel in the vehicle. The coils are activated by the key and send an electromagnetic pulse to the chip. The chip responds by sending a unique identifier to the car. The unique code can then be used to unlock doors and begin the car.

In World War 2, a similar technology was employed to help air traffic control to identify military planes on radar. This type of chip is still in use in the aviation industry.

These systems were thought 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. But the technology behind these chips has since been upgraded and they are no longer completely invulnerable to cloning. This has led many locksmiths to upgrade their skills by learning to read, program and write these newer types.


The Renaults are rather complicated in the way that they operate when it comes to their immobilisers as well as keys. There are two major systems that influence the way keys are programmed into the car. The older system uses an “kill switch” to disable a vital component of the car’s start-up mechanism if the correct key is not present. These are delicate devices that require a technician to assess and fix if they fail.

The newer system is simpler to use. It employs advanced encryption and rolling security codes to prevent copying the code from the ECU or key. This is what will be used on the replacement keys that we provide.

Certain models may even have an earpiece that cannot be detected by the standard transponder scanners and is specific to the vehicle. This is a highly effective method to avoid hotwiring and it’s also difficult to disable using the standard key or transponder emulator. We have a device called the Renault Antenna Emulator that we can use in order to bypass this type immobiliser on Renault Clio phase 2 models as well as some Renault commercial vehicles that are equipped with ID46 Transponders. It mimics the operation of a valid transponder within the ring antenna and can be used to replace failed keys, or lost keys, without having to dismantle the ECU. It has been approved and tested by Thatcham to offer additional peace of mind for motor insurance customers.