electrical problem
 

Hi -

I have a 2003 300M and I have a strange problem with the left rear brake lights, as well as some other strange quirks. My left rear brake light has stopped working even though all of the bulbs appear to be okay. Also, when I hit the lock/unlock button on the remote that side doesn't flash. To make things even more unusual, I have noticed on a few occasions that my headlights would just flash for no reason, usually accompanied by a clicking sound under the dash board, sort of like a relay clicking on and off repeatedly.

Any suggestions on what I can checkbefore I take it into the dealer?

Thanks.