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12-24-2009, 02:57 PM
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#4 |
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Learn to Relax
Drives: 2007, Meteorite, LB Join Date: Dec 2008
Location: Anaheim, CA
Posts: 2,070
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The Yaris engine and transmission is controlled by a computer, ECU. The ECU controls the warm-up from a cold start. The up-shift is delayed and will not up-shift to 4th until the engine is warmed, 2 to 5 miles. The ECU is adaptive and will adapt to your driving style. If you drive slow then switch to spirited driving the car will seem very sluggish until the ECU starts to adapt to the new driving behavior. There are a lot of threads on this type of complaint with new Yaris owners.
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