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Bluefrog · 09-14-2005, 08:26 AM

The dials are illuminated.
you may have broken the bulb or loosened it.
it is located behind the center dial, you just pull the knob straight out and the bulb is there on the bottom.
1 bulb for all 3 dials.

09-14-2005, 08:26 AM	#3 (permalink)
Bluefrog BenzWorld Member Date registered: Nov 2002 Vehicle: 1999 ML 430 Location: Edison NJ Posts: 157	RE: 1998 ML320 A/C knobs.... The dials are illuminated. you may have broken the bulb or loosened it. it is located behind the center dial, you just pull the knob straight out and the bulb is there on the bottom. 1 bulb for all 3 dials.