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A/C only running on EC mode all of a sudden. Help!

Old Oct 17, 2006 | 12:29 AM
  #1  
JYO's Avatar
JYO
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From: Dallas
1999 E 320 (sold), 2015 AUdi S5 (sold) 2005 CLK55 Cab, 2016 Honda Pilot Elite, 2011 Jaguar XF
A/C only running on EC mode all of a sudden. Help!

while driving home today i manually lowered the air flow coming from the climate control since i was trying to talk on my phone and it was noisy. when i went back to hit "auto" and let it do it's thing i noticed the climate control was running on the EC (economy mode). i hit the EC button but it won't go off.
is it likely my compressor is gone? any thoughts? thanks.

car is a 1999 E 320 with 98K miles.
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Old Oct 17, 2006 | 01:07 AM
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You are most likely low on Freon (leak) or you have a faulty pressure switch.
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Old Oct 17, 2006 | 01:39 PM
  #3  
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JYO
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1999 E 320 (sold), 2015 AUdi S5 (sold) 2005 CLK55 Cab, 2016 Honda Pilot Elite, 2011 Jaguar XF
a/c had been blowing very cold air just prior to the EC light coming on.

after some searching i see a few people have had to have a temp sensor replaced - that's not what u are talking about is it?
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Old Oct 19, 2006 | 12:13 AM
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AMG's
This is a common problem in w210s. Usually a faulty climate control module.
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Old Oct 22, 2006 | 02:25 PM
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have it checked to see if it has freon in it. it could be as simple as programing the a/c panel. there is a setting you can change with a sds. change refrigerant level check to not active. and not to say the other guy is wrong but ive never replace a push button panel for this problem.
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