I have a 1997 S420. the EC light is on and I have found to get the codes from the temp unit to see if I was out of freon and I am as the freon level is check #7 and should reed 12-18 and only reads 6.

That said, there are many other codes, 1-12 and 20-24 and 40, 41. Does anyone know what the codes are saying and what the correct numbers would be for them?

thanks in advance...Marc