Remove the LED cover.
Take out the LED.
A specialized workshop uses a digital multimeter VAG-1315A for verification. Press the buttons to measure resistance and voltage at the same time (arrows). Connect the red clip to the straight positive lead of the LED and the black clip to the bent negative lead. The diode should glow, otherwise it should be replaced.
Insert the LED into the instrument panel.
Caution: Ensure correct polarity when doing so. The negative pole of the LED is marked with a chamfer -1- on the body and has an enlarged electrode -2-. Some LEDs have an additional curved negative post.
Insert the LED cover.
Install the instrument panel.
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