"when the bad bulb is energized"
i wondered about this because when the colder weather set in, i started to get the check light intermittently. it would stay on meaning brakes or turn signal. i've seen it go on by itself after hitting some small bumps. the manual is specific about what the lights are if the idiot light stays on but nothing about being energized as noted. given what i've observed in my car - i am now wondering if there are shorts in the warning circuit.
1993 300e-2.8 - gone now <sigh>
"Do not adjust your mind, it's reality that's malfunctioning"