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elizabethice5

Eon AC Error

I'm having trouble with my 2013 Hyundai Eon with a gasoline engine. I'm getting an error stored in the error memory, and seeing an error message on the speedometer. The air conditioning system doesn't switch on either. I've checked the basics, but I'm suspecting a defective temperature sensor on the heat exchanger. Has anyone experienced this before?

Summary of the thread

A 2013 Hyundai Eon with a gasoline engine is experiencing an error message on the speedometer and a non-functional air conditioning system. The suspected cause is a defective temperature sensor on the heat exchanger, which could prevent the AC from turning on. The solution involves checking for coolant leaks and sensor calibration, but ultimately, a visit to a workshop confirmed the issue was with the air conditioning control unit, which was repaired to restore functionality.

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4 comment(s)

henry_herrmann5

That sounds frustrating! I own an Eon too, and I actually encountered something similar not too long ago. These modern climate control systems can be incredibly sensitive. The heat exchanger, sometimes called the refrigerant condenser, is a vital part of the cooling system. If the temperature sensor on it malfunctions, the car's computer might prevent the AC from turning on to protect other components. Before jumping to conclusions about a defective AC control unit, which can be pricey, did you notice any coolant leaks around the area where the temperature sensor sits? Also, do you have the equipment to check the sensor's calibration?

elizabethice5 (community.author)

Thanks for the quick reply! I haven't noticed any coolant leaks, but I don't have the equipment to check the sensor's calibration. What exactly would I be looking for if I could check the calibration?

henry_herrmann5

Alright, no coolant leaks are good news, so we can rule that out for the time being. By calibration, I mean checking if the sensor is reporting the correct temperature. If it's wildly off, even without a leak, the system will shut down the AC. Honestly, without specialized tools, it's tricky to diagnose definitively. Based on your symptoms, and the lack of any obvious leaks, my educated guess is still pointing to the air conditioning control unit. It might be best to visit a trusted workshop and let them run a proper diagnostic. They will probably be able to pinpoint the problem and properly recalibrate or replace the sensor, if necessary.

elizabethice5 (community.author)

Thanks for the advice! I appreciate you confirming my suspicions. I took it to the workshop, and you were right – the air conditioning control unit was indeed the culprit. The final repair cost came to about 980€. Everything's working perfectly now!

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HYUNDAI

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EON