I have not replied because I was taking some mental health time off in good ole Mexico for a week.

Anyway,

taxiboy - I turned the ignition on, set temp on climate control to LO and within 20 secs, prest the "rest" and "defroster button" simultaneously for more than 5 secs.

This puts the system into diagnostics and the codes appear. The first set are the current faults, and the second are the intermittant codes. You will need to turn the ignition off to end the test.

I got all the information from Alldata and I would suggest you do the same. This worked for my car, a 2000 C280, and I am not sure if it works for others the same way.

JimF - Before I left for vacation, I put in some R134, and re-read the 07 code. 006 is .6 bar. I was completely empty.

Once I put the R134 in, the air was blowing much cooler, and I was reading 12 - 13 bar. Now that I am back from vacation, I turned on the air and the 07 code is now reading 4 bar. I must have a leak somewhere and I need to find it.

-B-