2006 Toyota Highlander Recalls

On February 16, 2010, NHTSA'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.NHTSA 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, NHTSA 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 NHTSA 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 NHTSA opened RQ10-003, NHTSA launched a ten-month study of potential electronic causes of unintended acceleration in Toyota vehicles.NHTSA launched the study in the spring of 2010 in light of concerns aired in Congressional hearings.NHTSA 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 NHTSA's website.NASA's report is entitled Technical Support to the National Highway Traffic Safety Administration (NHTSA) on the Reported Toyota Motor Corporation (TMC) Unintended Acceleration (UA) Investigation, NESC Assessment No. TI-10-00618 (Jan. 18, 2011).NHTSA'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. NHTSA 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.

THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED PE06-055 BASED ON TWO COMPLAINTS OF LOSS OF EPS ASSIST IN 43,931 MY 2006 TOYOTA HIGHLANDER HYBRID VEHICLES.ONE OF THE COMPLAINTS ALLEGED THAT A LOSS IN POWER STEERING ASSIST RESULTED IN A CRASH.IN RESPONSE TO AN INFORMATION REQUEST LETTER FROM ODI, TOYOTA SUBMITTED INFORMATION ABOUT 6 ADDITIONAL CONSUMER COMPLAINTS, INCLUDING 2 ALLEGING CRASHES, AND 109 WARRANTY CLAIMS RELATED TO THE EPS ASSEMBLY IN THE SUBJECT VEHICLES.ODI?S ANALYSIS OF THE CRASH INCIDENTS REVEALED THAT EACH INCIDENT OF ALLEGED LOSS IN POWER STEERING ASSIST OCCURRED AT VERY LOW SPEEDS AND PRESENTED MINOR SAFETY CONSEQUENCES.TOYOTA'S RESPONSE ALSO IDENTIFIED THREE POTENTIAL ISSUES THAT COULD RESULT IN A LOSS OF EPS ASSIST IN THE SUBJECT VEHICLES.TWO OF THE CONDITIONS ARE RELATED TO ELECTRICAL CURRENT SURGES WITHIN THE EPS ECU.THE OTHER IS RELATED TO EPS MOTOR MAGNETS BECOMING DISLODGED BECAUSE OF POOR ADHESION.THE TWO ISSUES RELATED TO CURRENT SURGES CAN ONLY OCCUR WHEN THE VEHICLE IS BEING PARKED OR BEING OPERATED AT VERY LOW SPEEDS.THE THIRD ISSUE COULD THEORETICALLY OCCUR AT ANY SPEED, BUT OCCURS AS A RESULT OF A SPECIFIC TYPE OF IMPACT TO ONE OF THE FRONT WHEELS.TOYOTA STATES THAT IN ALL THREE CASES, AND DURING ANY LOSS OF POWER STEERING ASSIST TO THE VEHICLE, THE FRONT WHEELS CAN STILL BE DIRECTED WITHOUT ASSIST, MANUALLY, VIA THE STEERING WHEEL. ODI'S ANALYSIS OF THE COMPLAINT DATA AND OTHER INFORMATION SUBMITTED BY TOYOTA INDICATES THAT THERE IS A LOW OVERALL FAILURE RATE FOR ALL OF THE CONDITIONS COMBINED THAT CAN RESULT IN LOSS OF EPS IN THE SUBJECT VEHICLES (18 COMPLAINTS PER 100,000 VEHICLES AND A 0.2% WARRANTY CLAIM RATE) AND THERE IS NO EVIDENCE OF ANY FAILURE THAT COULD CAUSE A LOSS OF STEERING CONTROL.THE CHANGE IN STEERING EFFORT IS GREATEST AT VERY LOW SPEEDS WHEN THE STEERING IS AT OR NEAR END OF TRAVEL.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL CONTINUE TO MONITOR COMPLAINTS AND OTHER INFORMATION RELATING TO THE ALLEGED DEFECT IN THE SUBJECT VEHICLES AND TAKE FURTHER ACTION IN THE FUTURE IF WARRANTED.