The quickest and easiest way to test the dashboard in the BMW 3 E46 is as follows:
1. Turn the ignition switch to the left of the ignition lock.
2. Press and hold the test button on the dashboard (the first button on the left).
3. Not to leave this button, rotate the key one turn to the right.
4. The test mode is then activated and the display is on the display. As soon as it catches fire, you need to quickly release and click the test button, the display will pop up in two seconds, and in a few seconds the value will be 2.0.
You must press the far left button briefly. Test started.
