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2006 Toyota 4RUNNER problems

The most common problem on the 2006 Toyota 4RUNNER is body and structure, typically around 127,456 miles. It has 4.4 times the complaints of a typical 4RUNNER model year.

Year to avoid4.4x the typical complaints
Year score
18/100
Owner complaints
381
Recalls
5
Service bulletins
199
Worst area
Body
Fuel economy
16-18mpg

The worst 2006 Toyota 4RUNNER problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

Specific symptoms reported on the 2006 Toyota 4RUNNER

Ball joint 17Check engine light 9Fire or smoke 9Harsh shifting 9Jerking 9Sudden acceleration 9ABS 7Airbag light 7No deployment 7Tire blowout 5

Recalls 5

Seats: front assembly: seat heater/coolerReported June 2, 2016 · 7,749 vehicles affected
What is wrong
Southeast Toyota Distributors, LLC (SET) is recalling certain 2005-2011 4Runner, Highlander, Sequoia, and Sienna, 2005-2010 Avalon and Tundra, 2006-2008 Camry Solara, 2006-2010 Highlander hybrid, 2006-2011 Rav4 and Tacoma, 2007-2010 FJ Cruiser, 2007-2011 Camry hybrid, 2009-2010 Venza, 2010-2012 Prius, 1988-1990 and 2005-2010 Camry, and 1989 and 2009-2010 Corolla vehicles equipped with aftermarket accessory seat heaters with a copper strand heating element. The electrical wiring in the seat heaters may be damaged when the seat cushion is compressed.
Risk
If damaged, the copper strand heating element may short circuit, increasing the risk of a fire.
Remedy
SET will notify owners, and dealers will disconnect the seat heaters, free of charge, and refund the purchase price of the seat heater accessory. The recall began on July 14, 2016. Owners may contact SET customer service at 1‑866‑405‑4226. SET number for this recall is SET16B.

Recall number 16V396000 · Recall details

Air bags: side/windowReported February 5, 2016 · 320,409 vehicles affected
What is wrong
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2003-2006 Toyota Land Cruiser and Lexus LX470, 2005-2006 Toyota Tundra and Sequoia, 2004-2006 Toyota 4Runner and Lexus GX470 vehicles equipped with side curtain-shield-air bags. The affected vehicles have an air bag control module that may be improperly programmed, causing the side curtain-shield-air bags to deploy inadvertently.
Risk
If the side curtain-shield-air bags deploy unexpectedly, it can increase the risk of occupant injury.
Remedy
Toyota will notify owners, and dealers will replace the air bag control module with one that has improved programming, free of charge. The recall began on December 1, 2016. Owners may contact Toyota customer service at 1‑888‑271‑9371. Toyota's number for this recall is G0C and GLB.

Recall number 16V065000 · Recall details

Vehicle speed control: accelerator pedalReported February 24, 2011 · 1,363,244 vehicles affected
What is wrong
Toyota is recalling certain model year 2008 through 2011 lexus lx570, 2003 through 2009 toyota 4runner, and 2006 through 2010 rav4 vehicles. The accelerator pedal can get stuck in the wide open position due to its being trapped by an unsecured or incompatible driver's floor mat.
Risk
A stuck open accelerator pedal may result in very high vehicle speeds and make it difficult to stop the vehicle, which could cause a crash, serious injury or death.
Remedy
The remedy is now available. The safety recall began early april 2011. The remedy will involve modification or replacement of the accelerator pedal and replacement of any toyota all-weather floor mat. Owners may contact toyota at 1‑800‑331‑4331 or lexus at 1‑800‑255‑3987.

Recall number 11V113000 · Recall details

Equipment: other: labelsReported February 3, 2010 · 271,417 vehicles affected
What is wrong
Gulf states toyota is recalling certain model year 2005-2010 vehicles for failing to comply with the requirements of federal motor vehicle safety standard no. 110, "tire selection and rims." these vehicles were sold between september 1, 2005 and june 2, 2008 without the requisite load carrying capacity modification labels.
Risk
This does not meet the standard requirements.
Remedy
Dealers will mail to consumers the corrected label or the customer will have the option for dealers to install the label free of charge. Dealers will also correct the owner's manual. The safety recall began on may 27, 2010. Owners may contact gulf states toyota at 713‑580‑3300.

Recall number 10V035000 · Recall details

Equipment: other: labelsReported February 3, 2010 · 153,418 vehicles affected
What is wrong
Southeast toyota is recalling certain model year 2005-2011 passenger vehicles for failing to comply with the requirements of federal motor vehicle safety standard no. 110, "tire selection and rims." these vehicles were sold without the requisite load carrying capacity modification labels.
Risk
A driver may overload a vehicle which may increase the risk of a crash.
Remedy
Dealers will mail to consumers the corrected label or the customer will have the option for dealers to install the label free of charge. The safety recall began on may 27, 2010. Owners may contact southeast toyota at 1‑800‑301‑6859.

Recall number 10V036000 · Recall details

See all 5 recalls for the 2006 Toyota 4RUNNER

Defect investigations

Frame corrosionOpened August 17, 2018, closed March 18, 2022

On August 7, 2018, the Office of Defects Investigation (ODI) received a defect petition from Mr. Gary Weinreich alleging premature frame corrosion failure in model year (MY) 2002 - 2006 Toyota 4Runner vehicles. The petitioner based his request upon a corrosion-related front suspension failure he experienced in his MY 2005 Toyota 4Runner, a class action lawsuit settlement involving other Toyota products, and other complaints of underbody corrosion in Toyota 4Runner vehicles that he found in the federal safety agency?s online complaint database. The petitioner submitted a complaint to the federal safety agency documenting his experience (the federal safety agency ID 11098055). On August 17, 2018, ODI opened DP18-002 to evaluate the petitioner?s request. ODI?s evaluation included information provided by the petitioner regarding his vehicle, facts related to the class action lawsuit cited by the petitioner, and consumer complaint data received by the federal safety agency regarding underbody corrosion in third and fourth-generation Toyota 4Runner vehicles.The undercarriage of the petitioner?s vehicle exhibited severe corrosion damage indicative of seawater immersion. The vehicle?s service history shows that concerns with underbody corrosion were first noted by a Toyota dealer in a multi-point vehicle inspection performed on April 28, 2011. The invoice for that inspection noted ?severe and excessive amount of rust on the undercarriage and on the drive shaft transmission.? Two years later, on October 21, 2013, another multi-point inspection by a Toyota dealer observed further progression of underbody corrosion damage, noting: ?rust on shocks/struts and other components,? ?rust on exhaust system,? ?both splash shields severely rusted,? and ?undercarriage very rusty.? On July 17, 2017, approximately 10 months prior to experiencing the suspension failure incident, an independent repair facility performing routine oil change and brake maintenance informed the Petitioner of a concern with ?excessive frame corrosion? on his vehicle. The service history, severe general corrosion damage, failure age, and environment do not support the petitioner?s allegation of premature corrosion failure.ODI?s analysis of the federal safety agency complaint data identified fifteen incidents of front lower control arm failure in fourth-generation Toyota 4Runner sport utility vehicles. Two of the failures, including the petitioner?s vehicle, involve vehicles operated in ocean front communities with continuous exposure to aerosolized marine salts and potential exposure to seawater immersion. The remaining thirteen failures all involved vehicles owned or previously registered in states with the greatest use of deicing salts to treat road surfaces in winter months (?Salt states?). On average, the front lower control arm failures occurred after 13.1 years in service in highly corrosive environments. The failure ages and environments do not support the petitioner?s allegation of premature corrosion failure. the federal safety agency is authorized to issue an order requiring notification and remedy of a defect if the Agency?s investigation shows a defect in design, construction, or performance of a motor vehicle that presents an unreasonable risk to safety. 49 U.S.C. ?? 30102(a)(9), 30118. Since the information before the Agency is not indicative of a vehicle-based defect, it is unlikely that any investigation opened because of granting this petition would result in an order concerning the notification and remedy of a safety-related defect. Therefore, upon full consideration of the information presented in the petition and the potential risks to safety, the petition is denied. The denial of this petition does not foreclose the Agency from taking further action if warranted or the p

DP18002

Unintended and Uncontrolled AccelerationOpened February 16, 2010, closed March 1, 2011

On February 16, 2010, the federal safety agency's Office of Defects Investigation (ODI) opened RQ10-003 to determine whether the scope of prior Toyota recalls relating to potential unintended acceleration were sufficiently broad, including, among others, Toyota recalls 07E-082, 09V‑388, 10V‑017, and 10V‑023.the federal safety agency also requested information regarding potential electronic causes of unintended acceleration in Toyota and Lexus vehicles.I. Pedal Interference from Floor mats, Carpet Covers and Plastic Pads in Carpets.During the RQ10-003 investigation, ODI reviewed a large volume of documents to assess whether additional vehicles should be recalled.Following the agency's analysis, the federal safety agency requested that Toyota recall additional vehicles.Toyota complied with the agency's request.The details of these recalls are set forth more fully in Toyota's reports to the federal safety agency pursuant to 49 CFR Part 573.These recalls are as follows:Recall 11V‑112: (1) model year (MY) 2004-2006 Toyota Highlander and Highlander Hybrid; and, (2) MY 2004-2007 Lexus RX330,RX350, and RX400h (hybrid model). The total estimated population under this recall is 769,379 vehicles.This recall remedies potential accelerator pedal entrapment caused by a loose floor carpet cover (trim panel). Recall 11V‑113: (1) MY 2003-2009 through 2009 Toyota 4Runner; (2) MY 2006-2010 Toyota RAV4; and, (3) MY 2008-2011 Lexus LX570.The total estimated population under this recall is 1,381,000 vehicles.This recall supplements recall 09V‑388 and remedies potential accelerator pedal entrapment by an unsecured floor mat.Recall 11V‑115: (1) MY 2006-2007 Lexus GS300 (all wheel drive vehicles); and, (2) MY 2006-2007 Lexus GS350 (all wheel drive vehicles). The total estimated population under this recall is 19,647 vehicles.This recall remedies potential accelerator pedal entrapment caused by inadequate clearance between the pedal linkage and a plastic pad embedded in the vehicle's carpet.II. Potential Electronic Causes of Unintended Acceleration.After the federal safety agency opened RQ10-003, the federal safety agency launched a ten-month study of potential electronic causes of unintended acceleration in Toyota vehicles.the federal safety agency launched the study in the spring of 2010 in light of concerns aired in Congressional hearings.the federal safety agency enlisted engineers at the National Aeronautics and Space Administration (NASA) with expertise in areas such as computer controlled electronic systems, electromagnetic interference and software integrity to assess whether electronic systems or electromagnetic interference played a role in incidents of unintended acceleration in Toyota vehicles.That study has concluded.Two reports are associated with the study and are available on the federal safety agency's website.NASA's report is entitled Technical Support to the federal safety agency on the Reported Toyota Motor Corporation (TMC) Unintended Acceleration (UA) Investigation, NESC Assessment No. TI-10-00618 (Jan. 18, 2011).the federal safety agency's report is entitled Technical Assessment of Toyota Electronic Throttle Control (ETC) Systems (Feb. 2011).Both reports should be read in conjunction with each other. As stated in its report, NASA did not find an electronic cause of large throttle openings that can result in unintended acceleration incidents. the federal safety agency did not find a vehicle-based cause of unintended acceleration incidents other than the physical pedal interference causes that are being addressed by Toyota's recalls. This RQ is closed.

RQ10003

Technical service bulletins for the 2006 Toyota 4RUNNER 199

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 199 bulletins for the 2006 Toyota 4RUNNER

2006 Toyota 4RUNNER fuel economy

Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.

EngineDriveCityHighwayCombined
4.0L 6‑cylRWD162018
4.0L 6‑cyl4WD151917
4.7L 8‑cylRWD151816
4.7L 8‑cyl4WD141816

What 2006 Toyota 4RUNNER owners say

Most recent owner complaints, unedited.

Filed Sep 4, 2026 · NY

During routine maintenance, we noticed frame rot.

Filed Jun 14, 2026 · OH

unknown, vehicle started to leak a fluid, took vehicle to mechanic shop they said frame rotted to the point they would not let me drive it home had to have it towed and now without transportation. the almost identical frames on other toyota vehicles were recalled for exactly the same problem. i dont understand why toyota will stand behind some of their vehicles and take care of some of the toyota owners but not all.

Filed Apr 22, 2026 · Body · MA

Frame is rotting away. The tacomas, tundras, sequoia were recalled for this issue. The tacomas frame is very close in design to the 4runner. The main difference is the 4runner uses coil springs whereas the tacoma used leaf springs. Toyota stated that because the 4runner was made in Japan unlike the others that were made in the USA, that the 4runners were not part of the recall.most of the 4runners that are no longer drivable, are because of rotted frames. The repair kits that fix the rotted frames on the tacomas are the same kits that fix the 4runners. Now toyota won't even touch my vehicle for other repairs because of the rot holes.

Filed Dec 9, 2025 · Visibility · OR

MYself and my fiancee were driving to our family's home, the rear defrost was on due to foggy windows as we were driving down the road there was a loud noise from the back half of the 4 runner. I had turned and looked back behind me and the rear hatch window was completely shattered. Its still intact in the window frame but about to fall out. This happened out of nowhere no warnings or anything.

Filed Sep 11, 2025 · Body · CT

The frame under the car rusted so much that the gas tank literally fell through the frame to the ground. This put my son at risk and fortunately he was able to pull over in a residential area and exit the vehicle. A mechanic and welding company both assessed the vehicle and acknowledged the u unusual and excessive rusting. In researching online and speaking to car experts, this seems and is confirmed to be poor manufacturing and materials used for the frame.

Filed Sep 7, 2025 · IL

Excessive frame corrosion

Filed Jul 17, 2025 · Body · PA

Dangerous and rusted through frame. The vehicles frame should have been recalled like the other Toyotas affected.

Filed Feb 9, 2025 · Body · PA

We took the vehicle in for inspection and it failed due to the exhaust leaks, and more importantly the frame rusting out. We never received the recall notice for this issue. We have owned this vehicle for many years, so there is no reason we would not have been notified for the recall of the frame. The vehicle was just serviced last year and we spent a great deal of money to keep it running properly so we would not have any issues and it would last us for quite a long time to come. With the frame being rusted through, there is simply no way to keep this vehicle safe. Toyota did not notify customers that had the vehicles with the frame issue. This is something that is simply not acceptable. We are a family of Toyota owners and have always depended on the reliability of them. Finding this out has really shocked us and honestly diminished our trust in the Toyota reliability. Is Toyota willing to fix this issue, are we just stuck with this. Please help.

Filed Dec 12, 2024 · Body, Suspension · WI

My 4runner have major frame rust issues and is a major safety hazard. This a known issue to Toyota and a recall needs to be made.

Filed Nov 8, 2024 · Airbags · FL · crash · 1 injury

The contact owned a 2006 Toyota 4Runner. The contact stated that her son was driving at an unknown speed when another vehicle pulled in front of them to change lanes without warning causing her son to t-bone the vehicle and sending the other driver's vehicle to spin crashing into other vehicles nearby. The air bags deployed however their son received 2nd-degree burns on their right and 1st-degree burns on their lower region, and a concussion. The contact was unable to confirm if any other persons received injuries but was able to confirm other vehicles were damaged from the crash. Medical attention was needed. A police report was filed. The vehicle was towed to their insurance company's facilities who had stated the vehicle was totaled. The dealer was not contacted. The manufacturer was not made aware of the failure. The failure mileage was unknown. The VIN was not available.

Used buying checklistWhat to check on a 2006 Toyota 4RUNNER before you buy

Compare the 2006 Toyota 4RUNNER

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Other model years

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Questions about the 2006 Toyota 4RUNNER

Is the 2006 Toyota 4RUNNER reliable?

Owners have filed 381 complaints about the 2006 Toyota 4RUNNER, 4.4 times a typical 4RUNNER model year. It is one of the years we flag to avoid.

What is the 2006 Toyota 4RUNNER year score?

The 2006 Toyota 4RUNNER scores 18 out of 100 (poor). The score compares it with the other model years of the Toyota 4RUNNER: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.

What is the most common problem with the 2006 Toyota 4RUNNER?

Body and structure, with 143 complaints, typically around 127,456 miles. Next is suspension (65).

How many recalls does the 2006 Toyota 4RUNNER have?

5 recalls, covering seats, air bags and vehicle speed control.

What year does the Toyota 4RUNNER have the most body problems?

The Toyota 4RUNNER model years with the most body complaints are 2004 (310 complaints), 2003 (284 complaints) and 2000 (256 complaints).

What gas mileage does the 2006 Toyota 4RUNNER get?

Official estimates for the 2006 Toyota 4RUNNER range from 16 to 18 mpg combined. The most efficient version (4.0L 6-cyl, RWD) gets 16 city and 20 highway.

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