hey guys im trying to figure out how to use my keyless go. the car is a 03
e500. when i do what the owners manual says it says key not reconized.
it wont lock/unlock and start the car and it says i can roll down the windows but it wont work. what can i do? do i have to have them programmed at the dealer? help me out guys! thanks.oh and i also posted this in the 03 up e class section to try and get the most help.thanks again.

 

Could be the batteries or then you might need to take it to the dealer to reprogram it. Hope this helps

 

Do you have the card?