I have a 1996 Mercedes C220 and went to get it smog checked in Santa Maria, CA today. They said everything passed fine except that the "check engine" indicator bulb was burned out. Every now and then on rare occasions out of the blue it would flicker on for a few second. When I turn the key on, all of the indicator bulbs come on except the "check engine" bulb.

How can I change that particular bulb? They said it will pass the smog test if I get that bulb fixed.

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