THe EC Button stays on and the air conditioning. Doesn't work. Have recharged with refrigerant, but EC light is Still on.
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1998 Mercedes-Benz E320 Question: EC Button For AC
Answer #1irvtech March 26, 2009, 21:18Journeyman
When the AC does not come on and the system is fully charged, there is usually a fault. First thing, if the faults were not cleared from the system after it was recharged this can happen. You need to find a shop that has the proper tools to scan for faults, log the faults, clear them, then recheck the operation. If the AC system does not work then, it should be retested, because it should reset a code for the areas causing the fault. Good luck.
Replytallsweet, March 27, 2009, 17:08Rookie
Turned out the air compressor had a leak and needed to be replaced. But the EC button problem was pinpointed to the sensor on the dash near the windshield. That was replaced and everything kicked in. Probably could have continued to fill it with refrigerant once a year and just replace the sensor.
erigas August 12, 2009, 12:04Rookie
Do you the sensor name/part number that was replaced? I'm having the same problem with my 97 E320 and would like to replace the sensor first.
Answer #3Visitor, May 01, 2010, 14:56
guestionEC button or ac