I purchased a 2001 C320 approximately 2 months ago. After having the car for several weeks, I noticed that the keyless entry did not work unless I had the keyfob pointing directly at the little IR looking window by the door handle and was less than 5 feet away. Has anybody else experienced this problem? I took it to the dealer and they said it is normal. However, I think they are feeding be a load of... you know what.