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Old 04-11-2003, 09:17 PM
Registered User
Join Date: May 1999
Location: Calgary, Alberta, Canada
Posts: 190
1998 C230 AC question.

I am not able to turn on the air conditioning in our C230. The refrigerant has been checked and is at the proper level. All the fuses are okay. Is there something that needs to be reset after an AC service? The economy switch light will not go off.

1997 E320
1990 Nissan 300ZX Twin Turbo (Stage X+)
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Old 04-12-2003, 01:14 PM
DR.DIESEL's Avatar
Senior Member
Join Date: Mar 2003
Location: Puget Sound, Washington St.
Posts: 522
when the E.C. light is on and can't be switched off, there is a
electrical fault in the ACC system. You will need to have a MB
dealer pull the diagnostic codes from the control unit to see whats up. There is probably a failed pressure sensor or switch.
Good luck.
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Old 04-12-2003, 10:43 PM
blackmercedes's Avatar
Just a guy
Join Date: Dec 2000
Location: St. Albert, Alberta, Canada
Posts: 3,492
The most common AC failure for this car is the evaporator temp sensor. Cheap fix.

Good luck. BTW, I haven't had good luck at Hyatt with respect to their service dept. Might give LoneStar a shot...
John Shellenberg
1998 C230 "Black Betty" 240K

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Old 05-20-2003, 08:43 PM
TexasRedNeck's Avatar
knows enough 2B dangerous
Join Date: May 2003
Location: Kingwood
Posts: 21
Me Too


I have a 98E320 and my wife claims that very rarely (just a few times in the last year) the A/C will not blow cold. When she gets back in the car later, it works fine. From all the posts I have searched, it seems as though the 210 has a common problem with the evap temp sensor.

Can you confirm/comment about the 210, where the evap temp sensor is located, ball park cost for the sensor, and what is involved in replacing?

Thanks for the help.

"there are only two seasons in South Texas.....HOT and HOTTER"

Yesterday was 96F
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Old 05-20-2003, 10:21 PM
Registered User
Join Date: May 1999
Location: Calgary, Alberta, Canada
Posts: 190
Problem solved. (Well sort of)

I had it into the dealership for an unrelated issue and I mentioned the problem to them. They reset the AC system and now everything is well again. It has been fine for about 3 weeks now.

Thanks again,
1997 E320
1990 Nissan 300ZX Twin Turbo (Stage X+)
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Old 05-21-2003, 08:08 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
The A/C evaporator temp sensor MB number 210-830-07-72 lists for $53 & is in the heater case on the drivers side just above the gas pedal area. Removal of drivers side underdash panel is required.
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