SL55/63/65/R230 AMG: Air Conditioning Help Please


I have DAS, but I can't find the WIS in there? Any guidance there would be helpful too.
Thanks, MK19


Evap Temp 9C, s/b 1-80C
Coolant Temp: 86C, s/b 0-110C
Eng. Speed: 666 RPM, s/b 400-1400 RPM (could the devil be in my idle speed
)Refrig. Pressure: 11.7b s/b 2-33b
The system isn't quite a cold as I feel like it ought to be and that made me think it might need a bit of Freon.
Does the 11.7b Pressure seem like it could be a bit higher to bring the performance up?





