Issue ID | 760174 |
Internal NHTSA # | 10304735 |
Manufacurer | TOYOTA MOTOR CORPORATION |
Brand | TOYOTA |
Model | CAMRY |
Model Year | 2009 |
File date | 02/02/10 |
Component | VEHICLE SPEED CONTROL |
Product type code | VEHICLE |
Description of the problem | This concerns the current toyota sudden acceleration problem and my interpretation of the mechanism that may be at work causing these intermittent events. These cars involved have toyota's new "fly-by-wire" ignition and throttle control system, not the old manual throttle controls. The acceleration events may be coming from stray rf or electro-static discharge (esd) causing an electrical state change in one of the throttle control chip registers which then causes the sudden acceleration. The problem could also be caused by the same rf or esd, but only affect electrical control units in cars that have developed bad ground paths (which allow static charge to build up until it arcs over and zaps a chip) testing for this type for electrical fault must be done under conditions that accelerate the failure mode, ie under conditions that enhance esd occurrence and/or stray rf while changing the resistance of the ground paths to the throttle control module. As a reference point, request toyota's history on all warranty replaced failed electrical modules involved in/with throttle control for these recalled cars. A hard esd event may cause complete module failure and hence a warranty record. A "soft" esd event may cause state changes on the module chips. A comparatively high module replacement rate would be cause to investigate them and do fema stripback analysis on failed warranty units. |
Vehicle Mileage at Failure | |
Number of Occurences | 1 |
Source of the issue | NHTSA WEB SITE |
City and State | RICHARDSON, TX |
VIN pattern | XXXXXX |
Was vehicle invloved in a crash? | Y |
Was vehicle involved in a fire? | N |
Was incedent reported to police? | Y |
Was medical attention required? | |
Was part original equipment? | |
No. of injured persons | |
No. of fatalities | |
Date of purchase | 29/06/24 |
Was original owner? | N |
Anti-lock brakes | N |
Cruise control | N |
Number of cylinders | |
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Vehicle speed | |
DoT tire identifier | |
Tire size | |
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Type of tire failure code | |
Was defective tire repaired? | |
Date of manufacture | |
Type of child seat code | |
Type of restraint | |
Dealer's name | |
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