WIS 83.30 Air Conditioning
Repair Air Conditioning System
Refer to document by BenzWorld Member jnash: http://www.benzworld.org/forums/w210-e50-amg-e55-amg/1345786-how-repair-ac-system.html
This document has 15 files that contains PDF pages from the official M-B workshop on how to:
- Replace the compressor,
- Replace the dryer,
- Replace the expansion valve.
Also included are oil capacities when replacing all components or individual parts such as just the expansion valve.
Replace Evaporator Temperature Sensor
If your A/C suddenly starts to blow warm air, your Evap Temp Sensor may need to be replaced. If your S class A/C works for 10 minutes and then dies, and if this behavior continues every time you reset the A/C faults (video shows how to reset errors), you most certainly need to replace your Evap Temp Sensor.
You should also replace it as a very cheap maintenance item if your mileage is above 100,000 miles.
Part number is 220-830-07-72-M6 - you can purchase the Behr model from Pelican Parts at $16 as of 8/24/2019.
The following videos are for the W210 Mercedes. However, the workshop manual instructions are pretty identical to the ones for the W220 model. You will find that the concepts and the procedures are extremely similar and that given the dearth of videos on W220 A/C repairs you will benefit a great deal by watching the following videos while following the instructions provided above by BenzWorld Member jnash.