i have 2001 S500 . my car would not unlock with the remote. when i use the remote it beeps once for unlocking and beeps 3 times for unlocking but the car is noy unlocking or locking up with the remote. i have to manually lock unlock the car. Also the door does not close with the preasure

Please help

 

Try replacing the batteries in the fob. You can get them at CVS or Walgreens. I think the manual tells you how to open the fob and replace the batteries.