I have been changing brake light bulbs at a rate of one every 6-7 weeks. I had the van a 113cdi 2011 model with Mercedes 4 times in the last three months and no resolve. They installed and extension loom to the rear lights that I know of for the rest is a mystery. I am waiting for them to offer a new solution, but am considering replacing the bulbs with LED ones with a resister as to be compatible with the CANBUS electrical system. Mercedes first told me the problem was that I did not replace the bulbs with Merced branded ones, but with LUCAS ones. Has anyone had the same problem and what was the solution to this problem. Thank you all for your input