The starter cylinder and the smart key in cars

El bombín de arranque y la llave inteligente en los coches


Welcome to our article on the starter cylinder and the smart key in cars. In this text, we will answer the most frequently asked questions related to these essential parts of vehicles. We'll explore how they work, how to replace them, and what to do if your smart key isn't working properly. Let's get started!

What is the starter cylinder?

The starter cylinder is an essential part of a car's ignition system. It is a cylinder that is located in the steering column and that allows the vehicle's engine to be activated when the key is inserted and turned. The starter cylinder is connected to the ignition switch and other electrical components in the car.

How to replace the starter cylinder?

If your car's starter cylinder is damaged or not working properly, you may need to replace it. Here are the basic steps to perform this task:

  1. Disconnect the car battery to avoid short circuits.
  2. Remove the steering column cover to access the starter cylinder.
  3. Disconnect the wires and connectors that are attached to the starter cylinder.
  4. Unscrew the bolts that hold the starter cylinder and remove it.
  5. Install the new starter cylinder and make sure it is correctly fixed.
  6. Connect the wires and connectors to the new starter cylinder.
  7. Replace the steering column cover.
  8. Connect the car battery.

If you do not feel safe carrying out this task yourself, we recommend that you go to a professional mechanic to carry out the replacement of the starter cylinder.

What is the smart key?

The smart key, also known as a proximity key or keyless key, is a device that allows you to open and start a car without the need to insert a physical key into the ignition cylinder. These keys use radio frequency technology to communicate with the vehicle and perform the unlocking and ignition functions.

How does the smart key work?

The smart key emits a radio frequency signal that is picked up by the car's receiver. When the receiver detects the correct signal, the vehicle is unlocked and the ignition system is activated. This allows the driver to open the doors and start the car without having to take the key out of his pocket or bag.

What to do if the smart key does not work?

If your smart key is not working properly, there are a few actions you can take before contacting a professional:

  • Replace the key battery: In some cases, the lack of response from the smart key may be due to a depleted battery. Replace the battery with a new one and see if the problem is fixed.
  • Check the distance: Make sure you are within range of the smart key. If you are too far from the car, the signal may not reach properly.
  • Reboot the system: Some connection problems can be resolved by rebooting the system. See your owner's manual for instructions on how to reset the smart key and ignition system.

If after performing these actions the smart key still does not work, we recommend that you visit a dealer or an automotive security systems specialist to have the problem checked and repaired.


In short, the starter cylinder and the smart key are essential components in modern cars. The starter cylinder allows you to activate the vehicle's engine when you turn the key, while the smart key uses radio frequency technology to open and start the car without the need for a physical key. If you are experiencing problems with your starter cylinder or smart key, it is important to take the appropriate steps to correct them and, if in doubt, seek the help of a professional.

Frequent questions

1. Can I replace the starter cylinder by myself?

Yes, it is possible to replace the starter cylinder by yourself by following the appropriate steps. However, if you do not have experience in auto mechanics, it is advisable to go to a professional to avoid damaging other components of the vehicle.

2. What should I do if I lose my smart car key?

If you lose your smart car key, it's important to take extra security measures. Contact the manufacturer or an authorized dealer to obtain a new key and deactivate the old one. This will prevent someone else from using the lost key to access your vehicle.

We hope this article has been useful in solving your doubts about the starter cylinder and the smart key in cars. If you have any additional questions or want to share your experience, feel free to leave us a comment. We will be happy to help you!

Until next time!

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