Reving after releasing gas.

This might be my issue. after . I have a 2016 prius c. After it runs 45-50 minutes . when i release the gas pedal it revs a few seconds. . once this starts the car says EV is not available at the moment. If I shut the car down for 4 hours it goes back to normal . started a few weeks ago. I will check the fan. went to the dealership and they didnt see anything . I also called Toyota about it and they logged a case but had no info .

 

you can break those clips easy. less than 2 bucks from the dealer. they should add this vent cleaning to their maintenance service every 15K. Talked to the dealer and also Toyota direct and they said they have not gotten complaints about it . I filed a complaint so it is on record with them . i have 2016 prius c and the engine rev along with it not going into EV mode started 2 days ago . I cleaned the battery air intake vent and it now is working properly . Not hot enough to set the battery alarm off so that is why diags dont pick it up. Eventually you would get the over heating light. 100% sure this is the issue. Thanks everyone . Saved me a few hundred bucks and aggravation.

 

Fan cleaning fixed it . thanks