Problems refueling

There have been other threads describing the fueling problem for PRIME and Gen4. In most cases, it is simple operation errors. After the fuel door release is pushed, the refueling has to be finished within certain time limit. The time limit is 30 min, and if you take a long time to finish the refueling, the internal shutoff valve may close and you can't put fuel in. Also, there are some fueling stations with the gas nozzle hitting the fuel cover locking mechanism when you insert the nozzle into the car. This cause the the car to register that the fuel door is closed, again causing the fuel valve to close. The best thing to try when this happen is to close the fuel door and repeat the refueling procedure again being careful not to hit the fuel door open sensor switch when you insert the nozzle into the car.

I can't find the diagram of the fuel door open sensor now. If I find it, I will post it here.

 

I found the thread that discuss this problem. Fuel Filling Problem | PriusChat

Here is the picture taken from the thread above. The nozzle cover is hitting the latch mechanism in the fuel port shown by the arrow. This sometimes makes the car to "think" the fuel door is closed, thus cause the internal valve to close. You can correct this problem by repeating open fuel door switch and inserting the nozzle being careful not to hit the latch.

 

have you tried a different pump?

 

Wow！That must be Toyota's response to earlier models prone to false fuel door closed signal. That's good, but it's not good that you are still having the refueling problem. Humm, if it's not the fuel door closed signal, then there has to be something else causing the internal valve to close during your refueling.

Did you read the thread I posted above? There are few other suggestions as to why the refueling problems occur on Gen4 (and presumably on Prime as well).

 

As a single point of reference, I have had no difficulty refueling my 2018 Prime in California or elsewhere. Pump runs until normal shutoff. I only fueled it once in CA though.

 

There is the possibility that you have a problem with the tank vent. The vent needs to let the air out of the tank as fuel goes in. If the vent tube is pinched or something and not letting the air flow, then the air will bubble up the filler tube and cause the gas nozzle to shut off.

If this persists, have a dealership check it.

 

I ran into "inability to put fuel in" issue on one of my early fill ups. No idea why. It never happened afterwards. Probably some glitch with the internal valve.