2020 Toyota RAV4 Electrical System Problems

The screens will flicker and then dim on its own while driving.

Bought the car with 114k on it now with 115k and I brought it in to Toyota because I have a “engine maintenance required” on the dash now they are trying to charge me almost $1000 because my car has over 100k miles on it and they said they won’t cover it.

The contact owns a 2020 Toyota Rav4. The contact stated that while driving at an undisclosed speed, the message “Engine Maintenance Required” was displayed. The vehicle was taken to an independent mechanic, where it was diagnosed, and determined that the heater control valve had failed and needed to be replaced. The vehicle was repaired. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 47,000.

Shorted Coolant Bypass Valve, only 14500 miles on my 2020 Rav4, Class action Suit and dealerships want you to pay $800-$1000 to fix problem with a leaky defective plastic poorly designed valve that eventually leaks into the electrical connectors and shorts circuits the valve. There is no recall for this fix and Toyota won't honor the repair. This is a common issue and Toyota Turns a Blind Eye. Error Message: Engine Maintenace Required Call Toyota Dealership. I Did and they give me a song and Dance stating there is no recall for this issue. If i run the heater in the car the message for a few a minutes, then shut off vehicle maintenance warning will reset, once I turn on the AC it will come back on. So, I guess I have to keep the heater on all summer.

The wiring harness to the lithium battery is corroded, and it is unregulated. My repair shop said the car is unsafe to drive because of the amount of unregulated electricity in the battery. Also, the cruise control doesn't work. My repair shop says this is happening to other vehicles. Parts and labor total almost $7,000.

"Engine maintenance required. Visit your dealer" prompt after turning on Air conditioning. Message of Engine coolant bypass valve circuit short to battery or open upon diagnostic test

at only 55k miles my 2020 toyota rav4 has shown an “engine maintenance required” sign. not to be mistaken with general maintenance. apparently this is a widely common issue where brand new toyotas are having cooling bypass valve issue. however concerningly so, because there are no recalls for this problem yet seemingly every rav4 has this problem? how is there no recall, everyone is paying out of pocket for essentially poor manufacturing, its outrageous, also considering the part itself is under $100 but some dealers are charging anywhere to $600-$1300. it’s predatory and outright wrong.

Hybrid System Malfunction. The warning lights came on notifying of an issue with the hybrid system. A certified Toyota service center inspected the vehicle and found the hybrid floor wire traction cable/wiring harness corroded. Issue started 3/1/25, car was inspected on 3/3/25. This is a known issue with Toyota. Vehicle will no longer start and could have shut off while driving without warning.

The Rear Hatch started to get stuck. It is automatic so you would normally press a button to open and close and it would slowly move up or down and close shut on its own. When the issue started, it would "pop open" but stay stuck to a point where I would need to manually lift it open. (hitting my head on it often) Right before I took it to the dealership service, it would not close properly. While it seemed close, the notification showed it open therefore, not allowing me to lock my car and the lights on the car would need to stay on while car was parked and off. Driving home, the "open door" notification was beeping non-stop. Once again I had to open and close manually until it was considered "closed" Brought the car into the Toyota Dealership to assess. They found that the power lift gate hinges on the door were coming off and it needs to go to an Auto Body for realignment. I performed research online and found this to be a very common issue with the Toyota RAV4's. I have had leased 2 RAV4's prior to this one and never had a problem (those were manual hatches) [XXX] [XXX] My car has 33k miles on it although this issue (not as severe) started a while ago. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Known coolant bypass valve issue dealership declining to cover it although it’s impacting a ton of people.

•August 19, 2022: All emergency/error code lights came on the dash while driving on highway. The vehicle was taken to Don McGill Toyota for service. In that time, all error codes came back and went away a few times on their own. Vehicle was taken on 08/20/2022 (please refer to service records) in which it was originally deemed there were no issues with the vehicle. Toyota recommended that if the problem persists, bring the vehicle back in. •August 26, 2022: Vehicle emergency lights came back on while driving on the highway again. The vehicle was taken back to Don McGill Toyota for a service emergency. Was told the Vehicle needed a sensor replaced. Got the vehicle back on September 15, 2022. •September 6, 2023: Vehicle emergency lights come back on. The vehicle was taken to Don McGill Toyota. Another part was replaced (please refer to service records) and the vehicle was returned on September 9, 2023. •August 2024: Vehicle emergency lights come back on. The vehicle was taken to Don McGill Toyota for a break service as well as getting this emergency lights issue resolved. The vehicle was picked up 5 hours later, however upon driving a little in the dealership parking lot, emergency lights came back on. Immediately went back and brought it up to the service advisor, who then took the car back for another 1 hour and deemed the vehicle needed to be “recalibrated”. This recalibration was completed, then left the dealership. •September 3, 2024: Vehicle emergency lights come back on. This time the vehicle struggled to brake when the lights came on. The vehicle was taken into Don McGill Toyota for immediate service. Breaks were looked at and recalibration was completed. Vehicle returned on September 6, 2024. •September 14, 2024: Vehicle emergency lights come back on. The vehicle was taken to Don McGill Toyota for emergency service. Brakes were checked and the vehicle was driven around to bring the lights up. The vehicle was given back on October 1, 2024, after the ser

The start and stop system malfunction error message came on and warning sound . Its the second time it happened

I have had a Service Engine message on my dash that would return within seconds of my hitting the button to signal I received the message. When I took the vehicle to the dealership I was told it was a leaking coolant bypass valve and would need to be replaced. I was told the cost would be $215 plus three hours of labor. The final cost was $240 for the parts and $709 for the labor. The vehicle only has 31,209 miles on it. As I have researched the part, I have found numerous people have had the same issue within a similar range of mileage.

52,000 miles, and was just informed the coolant bypass valve has failed. This is apparently an issue with ALL 2019~2022 Toyota Rav4 vehicles. It was a known issue to Toyota, using substandard parts. It results in an error message that cant be turned off, masking all other messages, and can only be fixed by a dealer for over $1,000 in costs.

PARASITIC BATTERY DRAIN DEFECT complaint: prior to 07/16/2024, I received a "low voltage" error on my Toyota RAV4 screen a few times. On 07/16/2024, I took it to the dealership. My battery tested "good" and the Toyota dealership charged me 39.95 to tell me that everything was working well on my vehicle. The very next day (24 hours later), 07/17/2024, my vehicle would not start and had to be towed to the dealership. The tow truck driver told me the battery was "dead" (based on his measurement) and leaking acid (based on a smell). Toyota charged me 272.52 to replace the battery on 07/18, that was supposedly "good" two days prior. This is a known issue to Toyota, part of a class action lawsuit referred to as "Parasitic Battery Drain Defect." This is dangerous since I was stranded with a car that would not start in a summer day of high heat, but could have been much worse in other circumstances. The tow truck driver told me that the battery acid could be dangerous. Toyota should be providing a fix and a recall, but they had no solution for me other than a new battery which is a "quick fix" (but not a real solution) as described in the Class Action lawsuit documents.

Coolant bypass failed at 55,000 miles. This car has barely been used. This car is almost in mint condition and the coolant bypass has failed resulting the car not being able to be driven at all until fixed. The dealer is charging over $600 to repair. This is an ongoing issue with hundreds of Toyota RAV4 owners.

Coolant bypass valve needs to be replaced. Car under 60k miles and should be covered on the powertrain warranty but is being required to be repaired out of pocket otherwise will ruin engine

I currently own a 2020 Toyota Rav 4. About two weeks ago I got a notification on my car saying "Engine Maintenance Required" i had taken my car to Toyota wondering what the problem was. They informed me it it the coolant bypass valve without hesitation. This is going to cost me more money than I want to spend. To make the situation better the parts needed are on back order for almost two weeks. The fact this is a common problem right now and there is no Recall is unacceptable. You are causing thousands of customers to spend an unnecessary amount of money and wait weeks just to get the correct parts to fix the situation. There is currently a lawsuit against Toyota because of this issue. There needs to be a recall immediately.

my car has barely 40,000 miles on it when I received an "engine maintenance required" sign. When I went to the dealership, they said its the coolant bypass. I went on reddit and many 2020 rav4 Toyotas are having the same issue. This should be recalled as the repair is too expensive - above $800.

I replaced my battery a little over a year ago and have come back to my battery completely dead and unable to turn the engine over. The first time it happened my vehicle had sat for 4 days. It has done it sporadically and sometimes within 2 days of incidents. I have checked to make sure no components were left on to cause this issue. It has left me stranded multiple times.