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You should change the fuel pump relay under the glove box. My i3 had the same problems until I changed it myself. Never had a problem since the. The relay cost roughly $35.

Mine does that all the time! It looks like all the first generation i3 with REX have this problem. Doesn't seem to be a big problem since the check engine light will go off after a few starts.

Yes I was able to start the REX but not every time.

I had this problem too. It was the fuel pump relay that was defective. $31 for the part. 15 minutes to change by removing the glove box. Everything runs fine now.

If you visit this website you find a video showing the exact location of the fuel pump relay behind the glove box. https://www.newtis.info/tisv2/a/en/i01-i3-rex-hat_201404/components-connectors/plug-in-comb-type-solder-connectors/connectors-from-k/k12-1b-k12-1b/1VnXgPAOvC The easiest way to...

@Zwerius, It was the fuel pump relay on my car too! Glad you gave me the hint! I replaced it myself saturday and now it's running fine. Thanks, Steve

I had the same problem and and it was the fuel pump relay which is located under the glove compartment inside the car. I changed it saturday and everything is running fine now. The relay costs $31 CAD and is not too difficult to install. You have to remove 6 screws in the glove compartment and...

@Zwerius, thank you very much for the feedback! could you scan the paper work or part numbers that needed to be changed that would help my mechanics find or diagnose the problem. If you can PM me those informations that would be greatly appreciated! Thank you very much!

@Zwerius, do you have any update??

@Golli, Was it a relay inside the tank or somewhere else? Thank you for your help as we are a couple here having the same issue without any gos reponse from dealer. My car has been to the dealer 3 times for a total of 12 hours without any success!!! If you have any part number that could help...

@Zwerius, it was the user "Imram" who wrote it under "REX won't start". I have tried to reach that guy without success. I have the same problem with my car, it has been at the dealership 3 times and they do not have any idea of what is wrong. They just don't know what they're doing. If you...

Are you sure about the fuel pump? was it diagnosted by a dealer? I have had similar problems trying to start the REX without success and even the dealer was not able to tell if it was the fuel pump as they did not have anything to test it. I also read some post around here saying the some guys...

Is there anyone with a procedure to remove the gas tank. It looks that I might have some bad gas in there. Thanks!

Same thing here. I contacted the programmer of Bimmercode and he confirmed that it was not working actually but working on it. He also asked me to try in expert mode with no luck.

Hello There! My first post here. I have the exact same problem with my 2014 REX not turning on. It tries 3 times and the I get the error message. But every other day it starts and works just fine! The check engine light is on and I looked at the faults with my OBD2 reader: "Misfire on both...