If your battery has gone dead or you have replaced the engine battery, the ABS/ ESP / BAS lights may illuminate on your instrument cluster.
To reset the lights, start your Mercedes-Benz vehcile and turn the steering wheel all the way to the right, then all the way to the left. Do this a couple of times. Turn off the engine. Restart.
This should clear out the ABS/ ESP / BAS warning lights on your instrument cluster.
If this doesn't resolve the issue, you may want to contact your authorized Mercedes-Benz dealer.