70 of the
4,249 complaints filed about the Toyota Avalon
are about the driver-assist systems —
100% of everything owners reported.
The worst model year for it is 2014.
70
Complaints
100%
Share of all complaints
3
Crashes
0
Fires
Driver Assist & Collision Avoidance complaints by model year
On two occasions, 8 months apart, our car started braking on its own while driving in traffic. In both instances, the on-screen alerts indicated the LDA and simultaneously the check engine light. Neither time were we trying to switch lanes. In fact, the first time we were on a one-way street. In both instances, we were able to cruise over to a parking space before the car completely stopped avoiding a rear-end collision. Once we got in the space, we turned the car off and back on but it would not go forward or backward. We sat for 30 minutes or so, started it up and was able to get it home. We took the car to the Toyota dealership the next day. We got a call from the dealership in a few days stating the mechanics drove the car but the issue did not occur so we had to go in to the dealer and sign an authorization to allow access to the car's computer. About a week went by before we received a call stating they were waiting for an engineer to come in and diagnose the problem. Two weeks later, we got another call informing us the engineer would be delayed in getting to the dealership and asked if we wanted to pick up the car. Obviously, driving a car that we no longer feel safe in was not an option so we informed them to keep it until the problem was addressed. Weeks went by and we were not contacted so we sent a letter to the Corporate Office of Toyota. A case was opened but two weeks passed before we heard anything. We reached out and spoke with a representative who said they would have the initial rep call us. We never heard back so reached out again in a week and spoke with yet another rep who said there are two case numbers and the case is in progress and also told us there was "some kind of dispute" but we needed to speak with the case manager who opened the case and they would have her call back. Here we are nearly 3 months later and there has been no resolution. We've not heard back from the dealer in over a month and the Corporation in nearly 2 weeks.
NHTSA complaint #11760763 — an unverified report by a vehicle owner.
On two occasions, 8 months apart, our car started braking on its own while driving in traffic. In both instances, the on-screen alerts indicated the LDA and simultaneously the check engine light. Neither time were we trying to switch lanes. In fact, the first time we were on a one-way street. In both instances, we were able to cruise over to a parking space before the car completely stopped avoiding a rear-end collision. Once we got in the space, we turned the car off and back on but it would not go forward or backward. We sat for 30 minutes or so, started it up and was able to get it home. We took the car to the Toyota dealership the next day. We got a call from the dealership in a few days stating the mechanics drove the car but the issue did not occur so we had to go in to the dealer and sign an authorization to allow access to the car's computer. About a week went by before we received a call stating they were waiting for an engineer to come in and diagnose the problem. Two weeks later, we got another call informing us the engineer would be delayed in getting to the dealership and asked if we wanted to pick up the car. Obviously, driving a car that we no longer feel safe in was not an option so we informed them to keep it until the problem was addressed. Weeks went by and we were not contacted so we sent a letter to the Corporate Office of Toyota. A case was opened but two weeks passed before we heard anything. We reached out and spoke with a representative who said they would have the initial rep call us. We never heard back so reached out again in a week and spoke with yet another rep who said there are two case numbers and the case is in progress and also told us there was "some kind of dispute" but we needed to speak with the case manager who opened the case and they would have her call back. Here we are nearly 3 months later and there has been no resolution. We've not heard back from the dealer in over a month and the Corporation in nearly 2 weeks.
NHTSA complaint #11760763 — an unverified report by a vehicle owner.
Ever since, I purchase my certified 2019 Toyota Avalon in around June 2022, my car has left me stranded on highways, city areas, and broke down coming out of my garage. I even purchase extended warranty, because of the high mileage it had 77,000 miles. On [XXX] car broke down Drive Belt had to be replaced, [XXX] [XXX] warning lights, dealership service technician couldn't figured out why engine was slowing down the vehicle, engine repair evac leak for gas cap, [XXX], while driving my car the vehicle, my car immediately stopped, it was towed to dealership of Larry H Miller on Alameda in Albuquerque NM, caused of my car stopping on the road in Albuquerque, the technician stated that he found DTCS for Missfire, switched coil to different cylinder and codes went away/on [XXX], my car was towed, because engine stopped while driving, the dealership saw that it was an electrical problem, bad battery on [XXX] car dashboard lit up like a Christmas tree, showing electrical malfunctioning of secondary braking system, the car must be towed to the dealership. I was lucky to get the car into a parking area of gas station. I am [XXX], I need to get home and take my [XXX]. So, while in Albuquerque New Mexico, I called for a tow truck to pickup my vehicle because I have triple AAA membership. Since, I have another car, and I needed to get that day June 30, 2026. I had to wait until today July 9, 2026 to have triple AAA to pick up my car and take it to the dealership Larry H Miller Toyota on Alameda, Albuquerque, New Mexico. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11749408 — an unverified report by a vehicle owner.
I am experiencing the same malfunction with my backup camera/parking assist software that a million other VINs were recalled for. I called Toyota and was essentially told that not enough people from my cars' "batch" have complained. The malfunction is inconsistent, sometimes the camera works fine, sometimes the screen is totally black, and sometimes it freezes or goes black in the middle of backing up. This is incredibly hazordous.
NHTSA complaint #11719450 — an unverified report by a vehicle owner.
On 11/27/25 around 11:30 am , I went to stop at a stop sign before approaching the main road. I went to stop at the stop sign and hit the brakes as I proceded to turn left on to the main Road there was a car coming on the main road and I hit my brakes to stop from causing me to run into him when I hit the brakes to avoid hitting the other car , the brakes locked and would not stop the car. Causing the car to swerve and hit the car, went to the other side of the street , hit a pole , and damaged my left and right back and front of my car and hit the other car as well. It was not the first time that the brakes did this to me, however the first time that that happened thankfully I did not hit anyone on the on going road , but the brakes freed up and I continued driving. This timethe brakes froze and the car went out of control. I almost lost my life me and my husband who was a passenger in the car. The person whom I hit in the other car saw that I tried to stop and the car went out of control. The car would not stop. I am concerned because for a long time I have been telling the dealer when I go for service I complained about the knocking of the brakes when I press to stop. They said nothing is wrong and they never did anything about it. Now today I went to the dealer to complain about the accident I was in and wanted them to inspect the brakes. They wanted to charge me 199.00 and I refused to have them diagnose the car because this appears to be problem with the car and nothing on my part. It may be a sensor issue or something. I felt that the car was being operated remotley in other words I had no control the car spinned out of control and the brake system did not work. I want to get rid of this car because I have had 4 accidents with this car since I purchased it in May of 2022. I am now afraid to drive the car after this incident. Please someone help me with this situation.
NHTSA complaint #11702020 — an unverified report by a vehicle owner.
After starting to accelerate from a stop light ,the Dashboard had a warning message that the accelerator and brake pedals were pressed simultaneously. The acceleration stopped and the car slowed automatically. After a few seconds the warning indicator went away and the car could accelerate. The cars behind my auto had to stop suddenly. At the time. I though that I might have hit both petals at the same time. When it happened again I opened an incident report with Toyota. Incident opened on 07-19-25 Case # 250719000440. The Toyota rep told me it should be take to a Toyota dealer to diagmose any error codes.The next time the same problem occured I took it to my Toyota dealer and was told there were no error codes to indicate a problem. I have also taken the car to a local repair shop after the problem happened and was shown there were no stored errror codes.The dealer wants to have my auto for an extende time to reproduce the problem. If they need error codes to solve the issue but no error codes are recorded when the problem occurs what can they determine? I am hoping that there are other Toyota Avalon owners which might have had the same issue.
NHTSA complaint #11689204 — an unverified report by a vehicle owner.
Recurring issue with blind spot and rear cross traffic malfunction alerts. Toyota had issued a service bulletin for this concern. Dealer had to reprogram the module under part: 39151 T-SB-0034-19. CODE C1AB4 and C1AB5.
NHTSA complaint #11687086 — an unverified report by a vehicle owner.
Recurring issue with blind spot and rear cross traffic malfunction alerts. Toyota had issued a service bulletin for this concern. Dealer had to reprogram the module under part: 39151 T-SB-0034-19. CODE C1AB4 and C1AB5.
NHTSA complaint #11687086 — an unverified report by a vehicle owner.
The contact owns a 2015 Toyota Avalon. The contact stated that while driving at an undisclosed speed, there was an abnormal grinding sound coming from the brakes. The contact stated that the brake warning light illuminated, and the brake independently activated. The vehicle was taken to a specialty brake shop, where it was diagnosed that the brake actuator had failed, causing the ABS system to activate independently. The vehicle was repaired. On the drive back to the residence, the failure recurred. The vehicle was taken to an independent mechanic where it was diagnosed with brake master cylinder failure. The brake booster, gasket, and brake actuator were replaced. The contact stated that two weeks later, the failure reoccurred. The vehicle was taken to the dealer where it was diagnosed and DTC: C1441 and C1431 were retrieved, indicating an issue with the ABS system lateral acceleration sensor circuit or the brake booster. The dealer became aware that the front bumper bracket had paint on the part that did not allow for the vehicle to brake correctly. The brake pedal support assembly with sensor was replaced, and the paint was removed. The vehicle was repaired. The contact related the failure to NHTSA Campaign Number: 15V728000 (FORWARD COLLISION AVOIDANCE). The manufacturer was made aware of the failure. The failure mileage was 83,829.
NHTSA complaint #11680608 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
Cruise control stopped working while driving interstate speed. Would not work and all lights on dashboard came on . Proceeded to Nearest dealership and was informed that I needed a brake switch. Did not fix the problem. Have been informed that I need a wiring harness! About to spend a total of 400.00
NHTSA complaint #11659486 — an unverified report by a vehicle owner.
Cruise control stopped working while driving interstate speed. Would not work and all lights on dashboard came on . Proceeded to Nearest dealership and was informed that I needed a brake switch. Did not fix the problem. Have been informed that I need a wiring harness! About to spend a total of 400.00
NHTSA complaint #11659486 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
05/04/2025 First of all, we love our Avalon. However, for the last 6 months or so, water is getting in the car and ends up soaking the carpet on the left front floorboard carpet. We have checked everything we can think of to find the source of the leak but was uneasily. We had to have some scratches fixed and took the car to a body shop to see if they could find the source of the leak. They sprayed water on the sunroof for about an hour but no water leaked inside. We have also taken the car to the local Toyota Dealership (Sheehy Toyota in the Fredericksburg area, they could not find the source of the leak. It rained here (Fredericksburg, VA last night and the left front floorboard was soaked. I need help finding the source of the leak(s) so we can continue enjoying our Avalon. Any help would be appreciated. Thank you, [XXX] [XXX] Phone number [XXX] (cell phone) INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11658794 — an unverified report by a vehicle owner.
05/04/2025 First of all, we love our Avalon. However, for the last 6 months or so, water is getting in the car and ends up soaking the carpet on the left front floorboard carpet. We have checked everything we can think of to find the source of the leak but was uneasily. We had to have some scratches fixed and took the car to a body shop to see if they could find the source of the leak. They sprayed water on the sunroof for about an hour but no water leaked inside. We have also taken the car to the local Toyota Dealership (Sheehy Toyota in the Fredericksburg area, they could not find the source of the leak. It rained here (Fredericksburg, VA last night and the left front floorboard was soaked. I need help finding the source of the leak(s) so we can continue enjoying our Avalon. Any help would be appreciated. Thank you, [XXX] [XXX] Phone number [XXX] (cell phone) INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11658794 — an unverified report by a vehicle owner.
The manufacturer is no longer producing OEM windshield that comply with the a DAS features which are now in operable because my windshield will not calibrate after replacement because there is not an OEM windshield available. I have contacted Toyota. I have also searched everywhere in the states for an OEM windshield Toyota has tried to calibrate the replacement which is aftermarket, as well as the Auto Glass installer to no avail. Toyota is no longer manufacturing the OEM windshield which is needed for the safety features to function properly. The car should be recalled for a manufacturer defect.
NHTSA complaint #11576871 — an unverified report by a vehicle owner.
The manufacturer is no longer producing OEM windshield that comply with the a DAS features which are now in operable because my windshield will not calibrate after replacement because there is not an OEM windshield available. I have contacted Toyota. I have also searched everywhere in the states for an OEM windshield Toyota has tried to calibrate the replacement which is aftermarket, as well as the Auto Glass installer to no avail. Toyota is no longer manufacturing the OEM windshield which is needed for the safety features to function properly. The car should be recalled for a manufacturer defect.
NHTSA complaint #11576871 — an unverified report by a vehicle owner.
I have a tacky dashboard which has a glare on the dashboard hindering vision while driving. I understand is a recall however not for 2013 avalons. I’m a senior which make more difficult for to drive my care comfortably. I would like Toyota to approve the repair for my car. I’ve been a loyal customer for 25 years Sincerly
NHTSA complaint #11558920 — an unverified report by a vehicle owner.
After the alternator and battery dies the car went right back to accelerating by itself into traffic, I contacted Toyota and explained that after the battery and alternator died the problem came right back but they seem not to care
NHTSA complaint #11555641 — an unverified report by a vehicle owner.