Climate System Air Filter Replacement

[egruber]

I have a 98 CLK320. Part of the 'A' Service is to replace the Air Filter for the Climate Control system. Is this an easy DIY job? Can you tell me where to find it and how to replace it?

[mbdoc]

Since the CLK has almost the same heating & a/c system as the C-Class it's very easy.
Just remove the lower passenger underdash cover & there is a sliding cover on the heater box. Just remove this cover & the microfilter will come out.