Renault Keys – How They Work

Renaults come with a complex system of immobilisers and keys. This can make the process of replacing keys extremely time-consuming. Unless you have access to your vehicle and bring it in for us to make a code using the diagnostic socket, it could be a lengthy.


The Renault Group is primarily known for its vans, buses and tractors, however they also make cars. It was founded in 1899 and is a huge and well-established company with an extensive range of cars. You’ll require a new key if you lose or damage your keys to your car. Why not let us purchase one for you instead of waiting for your local dealer to make the order and then wait longer for it to arrive? At KeyNOW we can replace a remote or smart key for you very quickly.

We can provide the mechanical code needed to purchase a Renault Clio V spare key, Captur 2 spare key or New Zoe key from the dealer. We can also reset keys such as a Renault Kangoo, Traffic or Master key.

Renault has a long track record of innovation. It was the first company to utilize remote central locking in a production vehicle. The technology was developed by Paul Lipschultz for his employer Niemens who was a supplier of security components to the automotive industry. This breakthrough was a massive leap for safety in cars.


Despite the fact that smartphones seem to be close to replacing them, the hands-free cards of Renault continue to be widely used in their vehicles. In fact, they’re included in two out of three vehicles Renault sells, and their use has increased in recent years. In this video Pascaline from the division of Products at Renault explains the way these cards work.

Renaults have an immobiliser mechanism that is quite complicated. It is essential to know the basics before you try to unlock your car without the use of a key. Some vehicles have an emergency lock that is located on the passenger door handle that can be used in the case of a key malfunction or battery runout. This is an option for those who do not want to pay a professional locksmith.

You’ll also require access to a tool like the pump-up key or slim jim to remove the key fob and gain access. If you don’t have these tools it could be necessary to utilize a screwdriver or hammer to take the cylinder out.

You should be able to walk to the passenger side and find a small lock inserted into the driver’s side panel close to the handle of the door. This is a safety measure to keep people from locking themselves inside their own vehicle or accidentally stealing a neighbor’s. This is a simple but effective security feature that can help you save time and effort when you need to quickly get into your vehicle.


A lot of modern cars have transponders to guard against theft of vehicles. These tiny devices, which are attached to the key fob, include a chip and can communicate with the car when it is within range. These chips employ a code to identify the car and key.

The chip transmits signals to a pair of coils that are positioned around the ignition barrel of the vehicle. These coils are activated when the key is within reach and transmit a pulse electromagnetic energy to the transponder chip. The chip responds by sending back an unique identification code to the car. The unique code is then used to unlock the doors and start the engine.

Similar technology was employed in military planes during the World War 2 era to help air traffic controllers identify them on radar. The aviation industry is still using this kind of chip message.

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 improved and they are now no longer completely duplicate-proof. This has led many locksmiths in the auto industry to upgrade their skills by learning to read, program and write these latest kinds.


The Renaults are rather complex in the way they function when it comes to their immobilisers and keys. There are two main mechanisms that affect how a new key is programmed into the car. The older system uses an “kill switch” that connects to one of the vital car’s starting components in order to disable it in the event that the right key is not present. These are delicate devices that require a technician to assess and repair them if they malfunction.

The newer system is easier to use. It utilizes rolling security code and advanced cryptography to defeat copying of the code from the key or ECU. This is what will be used on the replacement keys we provide.

Certain models even come with an extra ring antenna which is not identified by standard transponder scanners and is specific to the vehicle. This is very effective at stopping hotwiring and is extremely difficult to bypass by using a standard key or an emulator for transponders. We have a device called the Renault Antenna Emulator that we can use to disable this type of immobiliser on Renault Clio phase two models and some Renault commercial vehicles with ID46 Transponders. It mimics the operation of a valid transponder in the ring antenna. renault car key replacement near me can be used on failed keys, or lost keys, without having to dismantle the ECU. It is Thatcham tested and certified to provide additional peace of mind for motor insurance customers.