CLK Engine Fault Codes

[thefast1]

Getting some engine fault codes which I have read and reset with a code reader, but they have come back again so there seems to be a problem that needs sorting out, codes are P0128-Coolant Thermostat (coolant Temp Below Thermostat regulating Temp) & P2006-Intake Manifold Runner Control Stuck Closed Bank 1a,
I think the Coolant thermostat needs changing, can anyone agree? if it does I would like to attempt this myself but I think I will need instructions on the procedure to remove the stat and where it is located, have done this type of job on previous cars like my old Mk3 Cortina in my younger days but the more modern car like my CLK 209 I would expect to be a bit more complicated and not so easy to access, so if anyone could help with any docs on this It would be appreciated, the other code P2006 I'm not sure where to start on that one, so again any help would be great, thanks

 

[BlackC55]

I would say that the stat is faulty.

It is veryt straight forward to replace. The top rad hose connects to it on the engine.

 

[thefast1]

Thanks, I will have a go then.

 

[raginbull]

fault code reader.

Has anybody used a hand held scanner on a 2003 270cdi? My car does have an OBD socket but I'm not sure what scanner to purchase as it is pre 2004. Any help would be much appreciated.