Consider any resistance considerations for the bulbs, as the W124 (and maybe W123) series bulb indicator on the dash works off of this.

In other words, the light may come on if the LED bulbs don't match the resistance of the OEM bulbs...

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car