One problem related to software has been reported for the 2003 Mercedes Benz CLK320. The most recently reported issues are listed below.
I am filing a complaint because recall id# 08v303000-electrical system is affecting my car and mercedes refuses to fix it. It is a software calibration that made my check engine light come on. When I took it to mb they said that the recall did not exist. Then they said that it existed and applied to the 2003 clk (which is what I have) but not to my VIN. They are trying to charge me to get this software calibrated when it's under a recall for other vehicles of the same year and class.