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Ec light remains illuminated and wont go off, EC for e320…

Ec light remains illuminated...

Ec light remains illuminated and wont go off

Mechanic's Assistant: Just to clarify, what are the exact lights you're talking about?

EC for e320 mercedes

Mechanic's Assistant: What year is your E320?

2002

Mechanic's Assistant: Are you fixing your E320 yourself? What have you tried so far?

Ive tried puahing rest and ec at the same time. i have the E61 234 , E61 416, 241

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Answered in 1 hour by:
1/3/2018
Mercedes Mechanic: Marty, Mercedes Technician replied 4 years ago
Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 57,141
Experience: Bosch Certified Master Tech. Over 35 years experience.
Verified

Hi, my name is***** you tried erasing the fault codes?

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Mercedes Mechanic: Marty, Mercedes Technician replied 4 years ago

Hi, just checking in. Do you still need help with this?

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Customer reply replied 4 years ago
I tried erasing the default codes
Mercedes Mechanic: Marty, Mercedes Technician replied 4 years ago

Ok, I need you to read the actual values through the climate control panel. Click on the procedure below. Write down all of the values and post them here. I am mainly interested in the first 10 values.

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Customer reply replied 4 years ago
1=91
2=16
3=93
4=91
5=91
6=200
7=7
8=112
9=27
10=5.3
Mercedes Mechanic: Marty, Mercedes Technician replied 4 years ago

Hi, everything looks good except for #7, refrigerant pressure. Your reading is too low. You also have a fault code B1241 for refrigerant fill. Your problem simply looks like the refrigerant level is too low to activate the compressor. Recharge the a/c system with the proper amount of refrigerant and erase the fault codes and you should be fine. The outside temperature value at #2 is also very low. Is it very cold where you are right now?

Marty

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Customer reply replied 4 years ago
No I am in California. Temp outside is in the 70's. Oh great. Why did check engine light come on?
Mercedes Mechanic: Marty, Mercedes Technician replied 4 years ago

Check engine light would be unrelated to your a/c problem. You will need to get the ECU scanned for fault codes.

I don't like that ambient temperature reading of 16 degrees. You might also have a bad ambient temperature sensor. What is the outside temperature reading in the instrument cluster?

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Customer reply replied 4 years ago
ok so take the car in?
Mercedes Mechanic: Marty, Mercedes Technician replied 4 years ago
I would recommend that you have the system evacuated and recharged with the correct amount of refrigerant and have the ambient temperature sensor repaired. Repairing those two items should get the AC working again.
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Customer reply replied 4 years ago
Thank you
Mercedes Mechanic: Marty, Mercedes Technician replied 4 years ago

You're quite welcome.

Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 57,141
Experience: Bosch Certified Master Tech. Over 35 years experience.
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