wwest Posted January 6, 2005 Posted January 6, 2005 From the "horse's mouth".....!! "Consumers don't always do (what's) best with the throttle..." With e-throttle " we gain better overall control..." "It also simplifies "shift-shock" control by letting the computer ease off the throttle for smooth automatic upshifts..." Statements by Paul Williamsen, curriculum development manager for Toyota Motor Sales USA. http://www.sae.org/automag/techbriefs/02-2002/index.htm (page down) Translation: You fools don't have any idea how to manage the throttle so we're (Toyota firmware design) taking over and doing it for you. Or: When we (firmware design engineers) need to shift the transmission to hell with what the driver needs or wants, safety concerns be dammed, we'll dethrottle the engine until we can get the transmission into the proper gear and the clutches fully seated.
ColinBarber Posted January 7, 2005 Posted January 7, 2005 When we (firmware design engineers) need to shift the transmission to hell with what the driver needs or wants, safety concerns be dammed, we'll dethrottle the engine until we can get the transmission into the proper gear and the clutches fully seated. What has safety got to do with it? Being an 'automatic' transmission I believe it has always been the case that the tranmission, rather than the driver, decides to change gear. If you don't like that concept get a vehicle with a manual transmission. e-throttle reduces the throttle a very small amount for a fraction of a second to reduce the feel of the change. Been done for the last 6 years on most Lexus models and the same thing has basically been achieved by retrading ignition for many many years.
wwest Posted January 8, 2005 Author Posted January 8, 2005 Colin.... Heads UP!! There are complaints posted all over the internet forums regarding engine hesitation, apparently in the entire Toyota/Lexus FWD e-throttle product line. Some owners complain that it takes the engine as much as a second or 2 to respond to removing the brakes and quickly going to half-throttle, such as one might do in an acceleration lane once a merge opening is spotted.
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