Investigations
UNWANTED ACCELERATION, FLOOR MAT
NHTSA Engineering Analysis EA07010 - closed, opened 2007-08-08 and involving the TOYOTA TOYOTA.
NHTSA investigation EA07010 is a Engineering Analysis opened on 2007-08-08 and currently closed. The subject of record is TOYOTA TOYOTA, which places this file inside the Office of Defects Investigation queue for TOYOTA. Latest activity on this investigation was logged on 2007-10-11 - NHTSA updates that field whenever an Information Request goes out, a supplement is filed, or a status change is recorded in the public docket.
An Engineering Analysis like EA07010 is the deeper technical phase that follows a PE. NHTSA requests design, warranty, and field-failure data from the manufacturer, conducts its own testing when needed, and determines whether the evidence supports a safety defect finding that would compel a recall.
Investigators summarized the matter as follows: "THE DRIVER SIDE FLOOR MAT WILL NOT INTERFERE WITH THE THROTTLE PEDAL IF PROPERLY SECURED USING THE RETAINING HOOKS PROVIDED BY TOYOTA. HOWEVER, IF THE ALL WEATHER MAT IS UNSECURED AND MOVES FORWARD FROM ITS INTENDED POSI..." Investigations are the early-warning layer of the federal auto-safety system, sitting upstream of formal recalls and defect orders. Whether this one closes without action or escalates into an Engineering Analysis, the full history stays in the ODI archive so researchers, litigators, and buyers can pull the paper trail at any time. Related TOYOTA files, listed below, give context on whether this is an isolated concern or part of a broader pattern across the brand.
Investigation Summary
THE DRIVER SIDE FLOOR MAT WILL NOT INTERFERE WITH THE THROTTLE PEDAL IF PROPERLY SECURED USING THE RETAINING HOOKS PROVIDED BY TOYOTA. HOWEVER, IF THE ALL WEATHER MAT IS UNSECURED AND MOVES FORWARD FROM ITS INTENDED POSITION IT CAN ENTRAP THE THROTTLE PEDAL AT THE FULLY OPEN POSITION AFTER IT HAS BEEN DEPRESSED. THIS CAN HAPPEN REGARDLESS OF WHETHER OR NOT ANOTHER MAT (CARPET) IS UNDERNEATH. WHEN THIS OCCURS, SOME OPERATORS REACT BY APPLYING THE BRAKE PEDAL MULTIPLE TIMES, DEPLETING THE BRAKING SYSTEM'S (VACUUM BASED) POWER ASSIST. STOPPING THE VEHICLE WITH UNASSISTED BRAKING WHILE THE THROTTLE IS FULLY OPEN REQUIRES SIGNIFICANT PEDAL FORCE, WHICH SOME OPERATORS DID NOT, OR WERE UNABLE TO, APPLY FOR THE REQUIRED DURATION. CONTINUED DRIVING IN THIS CONDITION RESULTS IN OVERHEATED BRAKES, WHICH FURTHER DIMINISHES THE BRAKING EFFECTIVENESS. SOME OPERATORS ATTEMPTED TO TURN THE VEHICLE OFF BY DEPRESSING THE ENGINE CONTROL BUTTON, HOWEVER THEY WERE UNAWARE THE BUTTON HAD TO BE DEPRESSED FOR THREE SECONDS TO STOP THE ENGINE WHEN THE VEHICLE IS IN MOTION; THIS FUNCTIONALITY WAS NOT EXPLAINED ADEQUATELY IN THE OWNER'S MANUAL. IN ODI INTERVIEWS, OWNER'S REPORTED THEY WERE UNAWARE THE ALL WEATHER MAT HAD THE POTENTIAL TO INTERFERE WITH THE THROTTLE PEDAL, ADVISING THAT THIS WAS NEVER PROPERLY EXPLAINED GIVEN THE SIGNIFICANT HAZARD IT REPRESENTED. OWNERS REPORTED SEVERAL EXPLANATIONS FOR WHY THE MAT WAS UNSECURED, INCLUDING THAT THE VEHICLE WAS DELIVERED IN THIS CONDITION (MOST COMMON REASON), OR THAT THEY HAD (UNWITTINGLY) INSTALLED THE MAT THEMSELVES, OR THAT ANOTHER PARTY, SUCH AS A CAR WASH ATTENDANT, HAD DISTURBED THE MAT WITHOUT THE OWNER'S KNOWLEDGE. ONE CONSUMER REPORTED THAT THEIR VEHICLE WAS DELIVERED WITHOUT THE RETAINING DEVICES INSTALLED. IN A SEPTEMBER 26, 2007 LETTER TO NHTSA, TOYOTA INDICATED THAT THEY WOULD CONDUCT A SAFETY RECALL TO REPLACE THE ALL WEATHER MAT WITH A REDESIGNED MAT. ACCORDING TO TOYOTA, THE NEW MAT DESIGN WILL REDUCE THE POTENTIAL FOR MAT INT
About This Investigation Type
An Engineering Analysis (EA) is the in-depth phase following a Preliminary Evaluation. NHTSA engineers conduct testing, collect data from manufacturers, and perform detailed technical analysis to determine whether a safety defect exists. An EA may lead to a voluntary recall by the manufacturer or, in rare cases, a mandatory recall order.
Other TOYOTA Investigations
Brake Actuator Valve Wear
Electrical problems / No-start
Joyson Passenger Side Air Bag Cushion
Battery Hold Down Bracket Thermal Events
Brake Actuator Valve Wear
Data from NHTSA Office of Defects Investigation. Cross-references: NHTSA recall campaign API and NHTSA FARS where fatality records overlap. PlainCars does not rate or recommend vehicles. about how PlainCars sources NHTSA data.
Read our methodology - how this data is sourced, computed, and verified.