RoadVitals

2015 Toyota Avalon Driver assistance Problems

Owner-reported complaints naming the driver-assistance system, filed with NHTSA

Data refreshed

Driver assistance reportsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
14
Latest Aug 14, 2025
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
34%
of 41 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
2
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
0

What this page shows

Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems. Every record below is an owner-reported complaint about the 2015 Toyota Avalon submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 14 reports on file name it.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Owner reports naming driver-assistance

Shown in the owner’s own words, exactly as filed

BrakesDriver assistance
Filed Aug 14, 2025

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 ID
11680608
Incident
Apr 14, 2025
Mileage
83,829 mi
Driver assistance
Filed May 4, 2025

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 ID
11658794
Incident
Jun 1, 2023
Driver assistance
Filed Sep 8, 2023
Crash reported

The contact owns a 2015 Toyota Avalon. The contact stated while pulling into a parking space, the vehicle accelerated unintendedly, drove over the curb, and crashed into bushes. The air bags did not deploy. The contact did not sustain any injuries. There was no police report filed. The contact was able to drive the vehicle to the residence. The vehicle was then taken to the dealer, where she informed that the VIN was not included in a recall related to the failure. The vehicle was not diagnosed nor repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 109,400.

NHTSA ID
11543398
Incident
Aug 17, 2023
Mileage
109,400 mi
BrakesDriver assistance
Filed Apr 25, 2023

While driving the pre-collision system (PCS) turns on unexpectedly, without any warning lights or sounds, and applies the brakes. This happens when I am driving in traffic with plenty of space between the car in front of me. I typically drive between 3-6 seconds behind the car in front of me to allow for at least 300 feet in space when driving at highway speeds. Despite leaving plenty of room for cars in front of me, on multiple occasions the car has started braking abruptly while going anywhere between 50, 40, 30, or 20 miles per hour. This can be verified for inspection upon request. Despite there being a recall for my specific year, make, and model car (2015 Toyota Avalon) for this exact issue my VIN number is not covered. Toyota is requiring me to pay out of pocket for them to 1) determine if its malfunctioning and 2) replace the system, which is a huge conflict of interest. Even though the Driver's Manual says that I can disable the PCS by clicking on the PCS on/off button within the driver's glovebox, there is no such button, only a blank button cover. Not having the ability to disable the PCS system, or worse, allowing it to continue braking while I'm driving is a serious hazard. The car can start braking while I am accelerating to merge onto expressway on-ramps, or while changing lanes at the same speed of traffic. The car can also unexpectedly brake while cars are traveling too close behind me. I want to know why my VIN was not included in the initial recall and why I now have to pay to have it looked at or repaired when its clearly malfunctioning and can't be turned off as the Driver's Manual says it can. I should not have to pay $175 an hour for several hours for a Toyota dealership to diagnosis it and then another $175 an hour for 2.5 hours for them to install the fix and whatever the new component costs. I recently bought this car at 35,500 miles and the issue immediately started occurring just as the warranty expired at 36,000 miles.

NHTSA ID
11518883
Incident
Apr 17, 2023
BrakesDriver assistanceFuel system
Filed Feb 11, 2020
Crash reported

ON FEB. 5, 2020 AT ABOUT 6:30 AM, MY WIFE WAS PULLING UP BEHIND CARS STOPPED AT A RED LIGHT, AS SHE APPLIED THE BRAKES TO STOP, THE CAR SUDDENLY ACCELERATED, SHE PRESSED THE BRAKES AS HARD AS SHE COULD, THE CAR CONTINUED TO DRIVE FORWARD HITTING THE CAR AHEAD OF HER IN LINE. SHE COULD HEAR THE CAR ENGINE RACING AND TRIED TO PUT THE CAR IN PARK, BUT IT WENT INTO REVERSE AND RAPIDLY MOVED BACKWARDS, EVEN WITH HER FOOT ON THE BRAKE, HIT THE CAR BEHIND HER. SHE THAN ONCE AGAIN TRIED TO UP THE CAR IN PARK, BUT PUT IT BACK IN DRIVE AND THE OUR CAR ACCELERATED FORWARD AGAIN FILL SPEED HITTING THE CAR AHEAD FOR A SECOND TIME, ALL THE TIME HOLDING HER FOOT DOWN AS HARD AS SHE COULD ON THE BRAKE. AFTER HITTING THE CAR AHEAD FOR THE SECOND TIME, SHE PUSHED THE ENGINE STOP BUTTON AND THE ENGINE STOPPED RUNNING AT FULL RPM. SHE NOTED THAT THERE THE FRONT TIRES WERE SMOKING ALOT SINCE THE TIRES WERE ROTAING EVEN THOUGH THE CAR WAS AT A STOP, DUE TO THE ENGINE RACING FULL RPM. POLICE WERE CALLED AND THEY DISPATCHED A TOW TRUCK FOR OUR CAR. THE POLICE NEVER ARRIVED, THE TOW TRUCK LOADED OUR CAR AND TOWED IT TO THE AAA STORAGE YARD .

NHTSA ID
11308465
Incident
Feb 5, 2020
Mileage
40,000 mi
Driver assistance
Filed Mar 9, 2017

TL* THE CONTACT OWNS A 2015 TOYOTA AVALON. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 15V728000 (FORWARD COLLISION AVOIDANCE) HOWEVER, THE PART TO DO THE RECALL REPAIR WAS NOT YET AVAILABLE. THE CONTACT HAD EXPERIENCED AN INADVERTENT ACTIVATION OF THE COLLISION AVOIDANCE SYSTEM. THE CONTACT STATED THAT THE MANUFACTURER HAD EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS NOT AVAILABLE. PARTS DISTRIBUTION DISCONNECT.

NHTSA ID
10959713
Incident
Oct 15, 2016
Driver assistance
Filed May 4, 2016

TL* THE CONTACT OWNS A 2015 TOYOTA AVALON. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 15V728000 (FORWARD COLLISION AVOIDANCE); HOWEVER, THE PARTS TO DO THE REPAIR WERE NOT AVAILABLE. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE PCS WAS DISCONNECTED. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS NOT NOTIFIED. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA ID
10863109
Incident
Dec 18, 2015
BrakesDriver assistance
Filed Apr 14, 2016

TL* THE CONTACT OWNS A 2015 TOYOTA AVALON. THE CONTACT RECEIVED RECALL NOTICES FOR THE SERVICE BRAKES AND VEHICLE SPEED CONTROL; HOWEVER, THE PARTS WERE UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT TOOK THE VEHICLE TO THE DEALER AND THE PCS SYSTEM WAS DEACTIVATED. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE NHTSA CAMPAIGN NUMBERS WERE UNKNOWN. THE VIN WAS INVALID. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE. UPDATED 05/11/16*LJ THE CONSUMER REFERENCED THE PRE-COLLISION SYSTEM. UPDATED 06/16/16.8JB

NHTSA ID
10855545
Incident
Apr 14, 2016
Driver assistance
Filed Apr 4, 2016

2015 TOYOTA AVALON. CONSUMER WRITES IN REGARDS TO VEHICLE PRE-COLLISION SYSTEM RECALL NOTICE ISSUES. *SMD THE CONSUMER STATED NOTHING HAS BEEN DONE TO RECTIFY THE PROBLEM WITH THE PRE-COLLISION SYSTEM; EXCEPT FOR TURNING IT OFF. RECALL # 15V728000. *JB

NHTSA ID
10852646
Incident
Nov 3, 2015
Driver assistance
Filed Mar 13, 2016

WHILE IN MOTION AND DRIVING NORTH ON RT. 295 AT THE RTE. 50 EXIT TO THE DISTRICT OF COLUMBIA, TWICE, ONCE CAR BEGAN BREAKING WHILE CRUISE CONTROL ON AND ENGAGED, AND ONCE WHILE IN MOTION WITH IT CRUISE CONTROL JUST ON. MARYLAND GOVERNMENT NOTIFIED AND CASE NUMBER IS SR-0267654

NHTSA ID
10846295
Incident
Dec 8, 2015
Driver assistance
Filed Mar 7, 2016

TL* THE CONTACT OWNS A 2015 TOYOTA AVALON. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 15V728000 (FORWARD COLLISION AVOIDANCE); HOWEVER, THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA ID
10840340
Incident
Nov 3, 2015
Driver assistance
Filed Feb 23, 2016

TL* THE CONTACT OWNS A 2015 TOYOTA AVALON. THE CONTACT RECEIVED A RECALL NOTIFICATION FOR NHTSA CAMPAIGN NUMBER: 15V728000 (FORWARD COLLISION AVOIDANCE). THE PART NEEDED WAS UNAVAILABLE TO PERFORM THE RECALL REPAIR. THE MANUFACTURER WAS NOTIFIED OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT.

NHTSA ID
10837804
Incident
Sep 14, 2015
Driver assistance
Filed Oct 22, 2015

THE PROBLEM IS WITH THE DYNAMIC RADAR CRUISE CONTROL (DRCC). IT APPLIES THE BRAKES FOR NO APPARENT REASON. BELOW ARE DESCRIPTIONS OF 5 OF ABOUT 20 SUCH INCIDENTS: -ON I-40. I WAS BEHIND A TRUCK MOVING 62 IN A 70 ZONE. THERE WAS A TRUCK IN THE LEFT LANE ABOUT 200 YARDS AHEAD. I MOVED TO THE LEFT LANE. THERE WAS NO ONE BEHIND ME IN EITHER LANE. DRCC QUICKLY SLOWED ME TO 40 MPH. -AGAIN ON I-40, IN RIGHT LANE BEHIND A TRUCK GOING ABOUT 62 IN A 70 ZONE. THE TRUCK 20 YARDS BEHIND ME MOVED LEFT AND ACCELERATED. BRAKES AUTOMATICALLY APPLIED BY DRCC. -ON I-8, RIGHT LANE FOLLOWING A VEHICLE 10 MPH BELOW THE SPEED LIMIT. A CAR WAS CLOSELY FOLLOWING ME. UPON REACHING AN EXIT RAMP, HE EXITED AND QUICKLY ACCELERATED. THE BRAKES WERE STRONGLY APPLIED. -ENTERING FREEWAY; LIGHT TRAFFIC, DRCC SET AT 75. THE ENTRANCE RAMP CAME IN FROM ABOVE THE FREEWAY AND APPROACHED THE FREEWAY AT A FAIRLY SHARP ANGLE. THERE WAS A METAL GUARD RAIL TO THE LEFT OF THE LEFT LANE. ENTERING TRAVEL LANE, STILL AIMED AT THE GUARD RAIL, BRAKES SHARPLY APPLIED. -CONSTRUCTION ZONE ON I-80, . SPEED LIMIT 55 IN THE CONSTRUCTION ZONE AND 70 BEYOND IT. FAIRLY HEAVY TRAFFIC WAS NARROWED TO ONE LANE IN THE ZONE WITH ORANGE BARRELS ON THE RIGHT AND JERSEY BARRIERS ON THE LEFT. THE NEAREST VEHICLE AHEAD OF ME WAS 100-200 YARDS AHEAD, BUT BEHIND WAS A SEMI ABOUT 20 FEET AWAY. CHANGED SET SPEED FROM 60 TO 70 APPROACHING END OF CONSTRUCTION.. I WAS PROBABLY 20-30 YARDS FROM THE END OF THE CONSTRUCTION WHEN I ADJUSTED THE SPEED.. JUST AS I REACHED THE END OF THE ZONE AND WAS BEGINNING TO ACCELERATE, THE BRAKES WERE STRONGLY APPLIED. THE SEMI VEERED TO MISS ME. MY GUESS IS THAT IF THE DRCC IS CONFUSED BY THE SITUATION IT IS PROGRAMMED TO APPLY THE BRAKES. A FAR MORE APPROPRIATE, AND SAFER, RESPONSE WOULD BE TO EMIT A WARNING BEEP(S) AND DISABLE THE CRUISE CONTROL.

NHTSA ID
10785402
Incident
Oct 16, 2015
Mileage
16,000 mi
BrakesDriver assistance
Filed Oct 7, 2015

I HAVE A SAFETY CONCERN. I BOUGHT A NEW CAR A COUPLE OF WEEKS BEFORE THIS INCIDENT; THIS IS WHAT I EXPERIENCED WITH THE PCS SYSTEM. IT WENT OFF WITH WARNING BUZZER, RETRACTING THE SEAT BELTS. TO MY SURPRISE, THE FRONTAL CAR WAS MORE THAN 120 TO 150 FEET AWAY!; I BELIEVE I WAS DRIVING AT ABOUT 50-55 MPH. SINCE THIS IS MY FIRST EXPERIENCE WITH THE PCS SYSTEM, I AM NOT SURE IF THIS WAS NORMAL OR WHETHER I SHOULD BRING THE CAR IN FOR INSPECTION. I TOOK THE CAR TO THE DEALER; THEY GAVE ME A TOYOTA CASE NO. 152660366 ; MECHANIC SAID HE PERFORMED HEALTH CHECK ON THE VEHICLE AND PASSED. I HAVE NOT HEARD FROM EITHER THE DEALER NOR THE MANUFACTURER SINCE THEN. PLEASE ADVICE. ADDITIONAL INFO: VEHICLE IN MOTION ABOUT 50 MPH, CITY STREET DRIVING, STRAIGHT BROAD

NHTSA ID
10780434
Incident
Sep 12, 2015
Mileage
500 mi

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