Does anyone have a reference that can be used to link the codes that can be pulled from the Climate Control Unit? There appears to be alot of information there, some of which I can guess at.

MERCEDES-BENZ: A/C Diagnostics & Evaporator Replacement

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

Hi Jonny: I'm in the exact same boat. I just purchased my 98 E300 w 177k. AC doesn't blow cold but compresser clutch is engaged and turning. I downloaded codes as per the post instructions, but I need a list of all of the codes so that I can refine my search to resolve the issues.

The example list just gives some of the codes.

Lets hope for some help from the forum.

With ignition in on position, turn climate controls on, then press and hold REST for 5 or so seconds, or until you see an 01 flash then another number will flash (inside temp), then back to one, use the arrow up (defrost) and arrow down (feet) to scroll up and down through the codes.

1. In-car termperature sensor (with aspirator blower)
2. Outside temperature sensor
3. Heater core temperature sensor
5. Evaporator temperature sensor
6. ECT sensor (Coolant temp.), e.g. 12*5 = 125C
7. Refrigerant pressure in bar, e.g. 12*8 = 12.8 bar
8. Blower control voltage, e.g. 16*5 = 1.65 volts
9. Software status of A/C pushbutton control module
15. Selected in-car temperature
20. Version code
21. Engine Speed (RPM), e.g. 6*0 = 600 rpm
22. Terminal 58d (Bat. Volt.), e.g. 99.0 = 99% of voltage
23. Vehicle speed (Kilometers Per Hour)
50. Not used – 00
51. Number of current slip recognition (poly-V-belt)
52. Number of stored slip recognitions (poly-V-belt) __________________
96 E300d

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96 E300d