HansV
Posts: 4
Joined: Thu May 27, 2021 4:45 am

Evaporator sensor location and replacement

Thu May 27, 2021 4:51 am

My AC have stopped working and I have a fault code from the evaporator temperature sensor. Have ordered a new one.
Where is this sensor located and how do I replace it?
Based in Realoem it seems to be somewhere in the front, but I could not find it by removing the frunk.
Is it located somewhere under the dashboard and needs to be accessed from the inside of the car?

My car is a euro 2015 60Ah, no range extender.

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MKH
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Posts: 880
Joined: Fri Nov 02, 2018 5:48 am
Location: Dallas

Re: Evaporator sensor location and replacement

Thu May 27, 2021 11:15 am

According to ISTA:
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Mark H.
2015 i3 Rex, Capparis White, Tera World, Technology & Driving Assistant, Parking Assistant, Harman Kardon Audio System, 19 inch 427 wheels, EVoInnovate EVSE

HansV
Posts: 4
Joined: Thu May 27, 2021 4:45 am

Re: Evaporator sensor location and replacement

Thu May 27, 2021 11:16 pm

Perfect, thanks a lot!

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MKH
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Posts: 880
Joined: Fri Nov 02, 2018 5:48 am
Location: Dallas

Re: Evaporator sensor location and replacement

Fri May 28, 2021 9:43 am

Perfect, thanks a lot!
Missed that you have an EU model. This shows a 2015 REx - USA. Would think it is still set up the same - but if it appears not to match when you get into it, ISTA displays according to VIN. If you PM me the last 7 of it, I can look up again specific to the car.
Mark H.
2015 i3 Rex, Capparis White, Tera World, Technology & Driving Assistant, Parking Assistant, Harman Kardon Audio System, 19 inch 427 wheels, EVoInnovate EVSE

HansV
Posts: 4
Joined: Thu May 27, 2021 4:45 am

Re: Evaporator sensor location and replacement

Fri May 28, 2021 11:24 am

It was identical to the REX.
Found the sensor and replaced it. Now the sensor fault is gone but the AC is still not working.
I think the likely cause is the AC is out of gas. It is reading only 1 bar refrigerant pressure with my iCarsoft reader. I think it should be much higher. The AC LED came on for a short time then vent out again. Evaporator temperature is reading the same as the outside temperature.
The dealer replaced the AC compressor and some other parts a year ago and have likely messed it up when putting it back together so it is leaking. have to go back and make them have a check.

I also have a fault code from the mixing flap motor, but this has always been there and the dealer claims it is not a real fault....

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MKH
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Posts: 880
Joined: Fri Nov 02, 2018 5:48 am
Location: Dallas

Re: Evaporator sensor location and replacement

Fri May 28, 2021 12:26 pm

Okay, good. This side of the pond, any Dealer repairs are warrantied for two years - hopefully your dealer will take care of it all.
Mark H.
2015 i3 Rex, Capparis White, Tera World, Technology & Driving Assistant, Parking Assistant, Harman Kardon Audio System, 19 inch 427 wheels, EVoInnovate EVSE

HansV
Posts: 4
Joined: Thu May 27, 2021 4:45 am

Re: Evaporator sensor location and replacement

Fri May 28, 2021 1:03 pm

Repairs are two years warranty here as well, but the dealer will most likely claim the problem is not related to the repair....
I will just have a go and see how it turns out.

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