Climatecontrol EC light stays on ...please any ideas ?
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Junior Member
Joined: Oct 2010
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98 E300 TD
Climatecontrol EC light stays on ...please any ideas ?
I replaced my climate control becouse my older one had a broken screen
but two weeks later on the one i bought the EC light stays on therefore the ac comresor won't start . is this brocken or it could be reset!?
but two weeks later on the one i bought the EC light stays on therefore the ac comresor won't start . is this brocken or it could be reset!?
Senior Member
Joined: Oct 2004
Posts: 272
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From: Michigan
SL600 r230, SL600 r129, SL500 r230, ML320, C280 Sport, R170 450SL, 190e 2.3 16V (2)
If it senses certain faults, the control will not allow the compressor to run, until repaired. This condition also causes the ec light to remain lit.
Maybe you have a problem?
Maybe you have a problem?
MBWorld Fanatic!
Joined: Oct 2007
Posts: 1,564
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From: SoCal
98 Brilliant Silver E320 Wagon
Run the built-in CC diagnostics and examine the values. Normally the EC light signals a low refrigerant charge or a faulty pressure sensor.
http://www.eclassbenz.com/2010/02/ho...-malfunctions/
http://www.eclassbenz.com/2010/02/ho...-malfunctions/
Last edited by RichardM98; Nov 5, 2010 at 08:52 AM.
Thread Starter
Junior Member
Joined: Oct 2010
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98 E300 TD
thank you guys, any idea on how reset the speedometer and rpm arrows to start counting from zero ? right now they are droped below zero and they start from there , they droped while i was changing a couple of instrumen bulbs , and i put them back in place by hand but soon as i turned the ignition on it dropes back down below zero any idea how to fix it or why they droped ???
Newbie
Joined: May 2011
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1998 C280
In another forum I found an old service bulletin that showed how to reset some of the systems, so I am posting this for all future people to see. Again this is a 1998 C280 with single climate control. The EC light stayed on all the time. I replace the evap temp sensor and reg temp sensor, thanks to sleepwalker's help. Then I recharged the system with freon and 46 PAG oil. By the way you must get the compressor to come on to charge the AC if your's won't come on, then hold down EC and Rest until the EC light goes off, the compressor will kick on. After you have recharged everything turn the ignition off. Turn the key back to the second position and turn up the temp to HI and then turn the key off again. Now hold down Rest, and keep holding it while you turn the key to position 2. OOP should flash on the Climate screen. You're done. Now turn the key off and crank. Problem solved, as far as I know anyway. I made sure I posted this because my local Mercedes shop tried to tell me that I couldn't reset it without a several thousand dollar machine, and I didn't have the knowledge to fix everything. Well, I didn't have the knowledge, but I spoke to enough people on the internet to piece everything together. I appreciate everyone's help, and hope this returns the favor. The local Mercedes people wanted $550-$750 to fix the problem. So I greatly hope this helps future Mercedes owners. I know the stress that no AC can cause. By the way the system holds 1.9 pounds of freon.
Newbie
Joined: Sep 2014
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From: New Orleans, La
E320 1999
EC LIGHT STAY ON
HI I'M NEW TO THIS DON'T KNOW HOW TO GET STARTED- I TOO HAVE A PROBLEM-HOPE SOMEONE CAN HELP ME--I CHANGED MY COMPRESSOR- CHANGED CLIMATE CONTROLL -CHANGED CD CHANGER IN MY 1999 E320- MY EC LIGHT IS STAYING ON --I READ MY CODES ON CLIMATE CONTROLL AS I FOUND THE 1ST 8 CODES PERTAIN TO THE AIR CONDITIONER -SO HERE ARE MY CODES 93-87-96-94-91-143-20-150 AND MY ERROR CODE IS B1241- SO IF ANYONE CAN HELP ME PLEASE
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Newbie
Joined: Nov 2009
Posts: 12
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From: Florida
w208 CLK430 2002
In another forum I found an old service bulletin that showed how to reset some of the systems, After you have recharged everything turn the ignition off. Turn the key back to the second position and turn up the temp to HI and then turn the key off again. Now hold down Rest, and keep holding it while you turn the key to position 2. OOP should flash on the Climate screen. You're done. Now turn the key off and crank.
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