Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hello and welcome to Just Answerthat sounds like it may be the 'service requierd' warning
to reset it :
Switch ignition on and immediately press knob to left of speedometer twice within 4 seconds.Present status for days or distance is now displayed. Within 10 seconds, turn key in steering wheel lock to position 0.Press and hold button to the left of speedometer, while turning key in steering lock to position 2 again. The present status for days or distance is displayed again. Continue to hold button until you hear a signal (approximately 10 seconds).Release button.Service interval displays the reset interval.
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try this video