How to program keys with a launch x431?

When we are repairing cars, we often encounter situations where we need to program car keys. If you are a new user of launch x431 , you may need to learn how to program keys with a launch x431 . In this article, I will introduce the steps of using Launch x431 for key programming.

1. Preparation before repair

Confirm the device and vehicle information:

Make sure your Launch x431 device software is the latest version. If it is not the latest version, it is recommended to upgrade through official channels. At the same time, accurately understand the brand, model, year and other detailed information of the vehicle to which the key to be programmed belongs, because the key programming methods and requirements for different models may vary.

Prepare relevant tools and materials:

In addition to the Launch x431 device itself and its supporting data cable, you also need to prepare the car key to be programmed. If you are adding a new key, make sure the key specifications match the vehicle; if you are replacing a key, you need to remove the relevant information of the original faulty key from the vehicle system first (required for some models).

2. Connect the device to the vehicle

Find the vehicle OBD2 diagnostic interface:

The OBD2 diagnostic interface of most vehicles is located under the driver's seat or near the dashboard, and the location is slightly different for different models.

Connect the device:

Use the data cable provided by Launch x431, insert one end into the vehicle diagnostic interface, and connect the other end to the Launch x431 device. Make sure the connection is firm to avoid data transmission interruption caused by looseness during programming.

3. Enter the key programming function interface

Turn on the device and vehicle power:

First turn on the Launch x431 device, and after the device is started, switch the vehicle power to the ON position (but do not start the engine).

Select the model and function:

On the main interface of the Launch x431 device, accurately select the corresponding model according to the vehicle brand, model and other information. After entering the model diagnostic interface, find "Key Programming" or similar function options and click to enter.

4. Specific programming steps

Read vehicle information:

After entering the key programming interface, Launch x431 will automatically read the relevant information of the vehicle, such as the vehicle identification number (VIN), anti-theft system information, etc. After reading, carefully check whether the information is accurate. If the information is incorrect, it may cause programming failure or other problems.

Select key programming type:

According to actual needs, choose whether to add a new key or replace the key. If it is a new key, the system will prompt you to enter the number of new keys and other information; if it is a replacement key, you may need to enter the relevant information of the original key (such as the anti-theft password, etc., which is required for some models) before programming the new key.

Follow the prompts:

During the entire programming process, strictly follow the prompts on the Launch x431 device. For example, you may be prompted to insert the key to be programmed into the ignition switch and perform specific rotation operations, or require certain buttons on the device to be pressed within a specified time. Be sure to complete the corresponding operations within the specified time, otherwise the programming may fail.

5. Inspection after programming

Start vehicle test:

After completing key programming, start the vehicle engine and check whether the vehicle can start and run normally. If the vehicle starts normally and there is no abnormal fault light on the dashboard, it can be basically determined that the key programming is successful.

Test other key functions:

In addition to starting the vehicle, you also need to test other key functions, such as locking, unlocking, and opening the trunk. Ensure that the newly programmed key can fully meet the vehicle's usage needs.

Although the steps for key programming using Launch x431 are relatively complicated, as long as you follow the above steps and operate carefully, you can successfully complete the key programming work and solve car key-related problems for car owners. If you encounter any problems during the programming process, you can refer to the Launch x431 user manual or consult the official customer service.