Originally Posted by
ZERACER
Be certain the batteries are installed correctly and that the contact points are clean and making contact. You might also contact, Mercedes Swap Shop for advice.
Thanks, ZERACER. Yes, the batteries are correct. I even check the key fob emitter with my phone camera to see it flashing when I depress either button. I didn't open the fob yet to look at the printed circuit board to see if anything is amiss there, but might.