I have run a 2002 Mercedes-Benz CLK Cab from new (it's now at 98,000 miles) and I recently had the autobox circuit board replaced by a good specialist garage, as the gear change sometimes stuck in lower ratios from cold. However, whilst considerably better, I still very occasionally have the problem from a cold start, but switching off engine and restarting always cures it. Is there anything else to be done?