Traced problem to "Interior Blower Unit". Ordered new part No K9901032 from a company on the web. AUTODOC Berlin, Germany. All details correct on order form. Comparable for CLK200 Kompressor year 2001 UK Reg number etc.
Unit arrived from Germany after a short wait. Good delivery service.Took the part to my Auto Sparks garage, which I have used for nearly 50 years, to be told Wrong Blower Unit. LHD car part delivered. RHD car part required. E.mailed
Autodoc,info@autodoc.co.uk (UK Office address) with invoice details and explained the problem. Shipping date was the 26-09-2023. To date the 22-102023 nearly a month since ordering. Have heard nothing from Autodoc. Anybody had
dealings with this company.

Still no reply from Autodoc regard wrong part supplied. Purchased another unit from a UK supplier and fitted OK. Now going spare, for sale a New still in box. LHD Interior Blower Unit for a CLK 1996 - 2002 vehicle. This will also fit SLK cars of the period.
£30.00 Sterling plus P&P. Part is for cars that drive on the wrong side the road. LHD. USA - Europe etc.

Mercedes CLK 200 1998-2006. Heater Control Unit. (Dashboard Unit that controls the Heater Blower, Rear Window Demister etc."No longer stocked or available via MB. Germany".
Part No A1708300985. Advised to search Fleabay or scrap yards, for secondhand parts and take your chance.