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A/C and AUTO Light Inoperative after EIS Replacement

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Old 04-02-2015, 09:50 AM
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Mercedes C230
A/C and AUTO Light Inoperative after EIS Replacement

Hey all,

I recently had the pleasure of having to get my car towed to our nearby dealer for a new battery, new key, and new EIS. Before the EIS failed, everything else in the car worked fine, A/C blew cold, no warning messages. I get the car back and the first thing I see is "AUTO Light Inoperative" and the A/C is grossly lukewarm on the max cooling setting.

I don't have much knowledge on how these systems are interrelated, is there any way that either of these issues could be from something that happened during the replacement of the EIS? Would love to know before I call and talk very politely with the service manager. Thanks!
Old 04-02-2015, 10:00 AM
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pcy
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Take the car back to the dealer that performed the work. Tech may have forgotten to connect something.
Old 04-02-2015, 11:02 AM
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Okay, I have it scheduled to be dropped off this evening. Will keep you posted.
Old 10-28-2015, 09:21 PM
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Originally Posted by shill01
Okay, I have it scheduled to be dropped off this evening. Will keep you posted.
Were you able to figure out the problem? I have the exact same scenario. My EIS went bad, and they ended up replacing the EIS and ESL. Now the A/C doesn't work at all and i have the AUTO Light Inoperational error as well. Also, there's no beep when i lock the car twice anymore.
Took it back to the dealer, but they claim that there's no connection between the EIS and the errors i'm seeing and they want to charge me to diagnose the problems.
Old 10-30-2015, 05:19 AM
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Ask to speak to the shop foreman about it. Your EIS absolutely has relevant climate control settings in it and a lot of them need to be checked they are coded to the right things for what your car has.
Old 11-02-2015, 02:28 AM
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Well it turns out it WAS the reprogramming from the EIS.

I'm actually still battling the poor programming the car received after the EIS was replaced, though. Our headlight "Auto" function doesn't work and the "Off" function does not work when the car is on. I thought I could live with it for a few months and had them check it during the Service B, not sure if they actually did anything this time around... such is life.

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