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Perform the Light Test with the Secret Code of Your BMW 1 Series

Model: BMW Serie 1 F21, MK 2, F20 - Years: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Part: Instrument cluster

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Let's see how to unlock the secret code of the BMW 1 Series: first, insert the key without turning on the ignition, then press and hold the button on the left that resets the kilometres until a strange code appears on the display, which is your car's code.

You need to sum all the numbers except the first one. Continue pressing, and the program will show you all the codes of the vehicle.

When you unlock with your code, it will display a series of components with a number in the top left. For example, 19 is the light test.

Enter your code, and the system will perform the light test, as shown in the video.


Updated on 9 July 2026 by ScegliAuto


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by ScegliAuto

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