Other Fuel System Pump problems of the 2015 Toyota RAV4

Ongoing issues with my fuel system. Car will display one of these many symptoms: -misfire, hard start, stall or shutoff. Other symptoms include car stuttering and stalling out while driving. This last symptom is very dangerous as it often comes with no warning. When the car stalls out, the car is driving up straight up a medium grade hill. I have experienced this on several different dates and times along w 24th st. Austin, TX near 1106 w 24th st. This will happen if I'm either stopping at a light or while in motion. I don't have the exact mph I am driving, but it would be around 20 - 40 mph when this occurs. Ive taken the care to both round rock Toyota and christian auto brothers to address the issue. So far, neither have been able to diagnose the problem. On 5/22/20, christian auto brothers replaced the evaporative emissions system leak detection unit r&r, the fuel evaporative canister r&r, the evaporative emissions system leak detection pump, and the vapor canister purge solenoid. This did not resolve the issue. Current codes: p0441, p0455, p1604, p1605, p0171. While no diagnostic proof has been established, it is hypothesized by the mechanics that there is an issue with either the fuel pump or the fuel line. After reading about the 2020 Toyota fuel pump recall, I believe my 2015 Rav4 has been experiencing similar issues. However, it is not part of the recall. Therefore I am submitting this incident info to document the current situation. If I learn more, I will try to update.

Purchased this car dealer certified after being leased for 9 months by someone else, from new rochelle Toyota. Had 5700 miles on it at the time of purchase. Since purchase it does not always start the first time, sometimes taking 3-4 times to start, and making strange noises, it sounds like its going to start and then dies. Has been to the shop 3 times and going in for the 4th time today, on 12/4 a new fuel pump relay was installed, starts better but still unknown reason why it at times it still takes 3-4 times to start it. Is a mystery , nothing shows up on the tech computers after it happens over and over again. Have owned Toyotas for over 17 years never expected an issue like this. Also lights flicker and there are strange noises when attempting to start and unsuccessful. No rhyme or reason to this issue. Took possession of the car 10-13-15 I think it is a lemon. I have a video of what happens dont think I can upload to this website.