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Here are some steps for replacing a brake light bulb on a BMW 3 series from 2004–2020:
Remove the trim: For some models, the trim can be popped out easily.
Push the tabs down: For some models, push both tabs down at the same time to release the housing.
Remove the housing: For some models, the housing can be removed smoothly.
Remove the bulb: For some models, the bulb can be twisted counterclockwise to remove