2017 Toyota 4Runner Complaints

UNKNOWN OR OTHER — Filed 07/11/2026

The car was running while in park. Our son got and and shifted the car into reverse from the passenger seat. The gear shift will engage without applying the brake or even without running and in park. The car crashed into one of our other vehicles parked behind the 4 runner. There is a malfunction with the automatic shift locking mechanism otherwise known as the safety interlock.

ELECTRICAL SYSTEM — Filed 02/26/2026

For the 2nd time in 5 weeks, the main wiring harness and knock sensor have been eaten and destroyed by rodents. This has caused thousands of dollars worth of damage, and it's due to the soy based wiring used in the wiring harness. I cannot keep this vehicle outside for any period of time without the threat of the harnesses getting chewed.

UNKNOWN OR OTHER — Filed 08/29/2025

I was driving on the highway with no one around me. Temperature was around 60 degrees at 7:15am. My sunroof glass shattered as if it was a gunshot and the glass was pointed outward. It terrified my special needs child and myself and took a while for her to calm down. I drove it home later and opened up the sunroof to shattered glass everywhere. I have looked online and it is a known defect. I have a dash cam as well.

FUEL/PROPULSION SYSTEM — Filed 05/25/2025

2017 Toyota 4 runner SR5 While driving on the highway the vehicle stopped apparently the fuel pump stopped working and could not get going anymore. I had a mechanic come to the house with a PC and test it. He told me that’s a change that will need to take place in a garage. Luckily I was able to stop on the side and paid someone to bring car home

ENGINE,FUEL/PROPULSION SYSTEM — Filed 03/19/2025

Throttle has a lag when depressing gas pedal (occasionally a dead petal symptom) research indicates a TSB T-SB-0166-10 exist that relates to this issue. Lack of Toyota dealer assistance with this issue when contacted (Toyota of Round Rock Texas 78664) This issues is a safety concern when operating vehicle due to lack of throttle response when accelerating into traffic. When issue occurs, vehicle "stalls" and creates a dangerous situation that eventually will result is an accident.

STEERING,SUSPENSION,POWER TRAIN — Filed 12/02/2024

Front struts are leaking which are causing the vehicle to drive inconsistently. The struts should not have to be replaced this soon when the vehicle is being used on normal condition roads. After researching, it appears this is a manufacturer, Toyota, issue, that is known, and Toyota should be issuing a recall for replacement due to the number of incidences that are known on the 4-Runner.

LATCHES/LOCKS/LINKAGES,UNKNOWN OR OTHER — Filed 07/01/2018

I have owned my vehicle since 2017 and since then I have had to change the locks over 10 times. this has been ongoing since purchasing my car. Some were originally covered with the warranty but since it expired, i have paid dealerships out of pocket. I have a lock give out almost yearly. Right now my car has 3 of the 4 door locks not working and the 4th just started acting up as well. I have checked for recalls because it doesn't make sense that they would go out yearly and the dealerships have even told me there should be recalls because my year 4runner always has lock issues. my safety concern is my locks either have to stay unlocked or i risk locking my car completely and it not opening because the key will not unlock it. I have tried contacting Toyota and they have stated they cannot help so I am wanting to reach out to see if there is anything that can be done or if you can point me in the right direction on who i can reach out to . thank you

UNKNOWN OR OTHER — Filed 12/12/2022

Car Theft Brentwood

VEHICLE SPEED CONTROL — Filed 04/19/2022

Text sent to Toyota. Copy to NHTSA. Hello, my name is [XXX]. I am writing to both Toyota and NHTSA with what I perceive as a safety problem. I have owned three Toyotas including a 2017 4runner. I have been pleased with them except for one characteristic they all shared. The turn signal sound volume is just too low. My son's F-150 and my wife's Audi A4 both have very clear and distinct turn signal sounds that I can clearly hear over normal conversation or the radio playing. The Toyota does not. Why? In a nation with aging baby-boomers, whose hearing is diminishing, it would seem obvious that an adjustable turn signal volume control (with a minimum level) would be a much valued enhancement to any vehicle. When you consider that many of the electronic features of modern cars are never used, it strikes me as odd that no vehicle manufacturer has addressed this obvious problem. I have sent a copy of this text to the National Highway Safety Commission and several Toyota competitors in the hopes that someone will realize the potential for a very useful vehicle enhancement. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

SERVICE BRAKES — Filed 02/17/2022

Failed brake master cylinder, this is still a rather new vehicle and the mechanics said this is unlikely in a new low mileage vehicle. I did research and this has only happened a few times, seems like a safety recall should be put in place.