- #1 of 9
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Transmission question
by anry555
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Mar 23, 2009 (1:53 pm)
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Hi guys,
Just took Venza V6 and V4 for test drive. I found the same weird behavior in both of them.
You drive the car in a manual transmission mode (let's say using 3rd shift) and fully stop (not changing the shift). The panel will still show 3 for the shift and it won't change it to 1 as it used to be in other cars. So, you start driving again and keeps showing 3.
Do you have the same in your Venza? is it by design?
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- #2 of 9
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Re: Transmission question [anry555]
by toledo73
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Mar 25, 2009 (2:45 pm)
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Replying to: anry555 (Mar 23, 2009 1:53 pm)
HUH? If you have the shifter in 3rd it will not move to 1st. You're still in 3rd at a stop. Just like if you're in D, it does NOT change to 1 at a stop.
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- #3 of 9
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Re: Transmission question [toledo73]
by anry555
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Mar 25, 2009 (3:32 pm)
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Replying to: toledo73 (Mar 25, 2009 2:45 pm)
What? How come the transmission doesn't adjust it? It makes no sense to start driving with 3rd (or 4th..etc) gear. Or driving 40km/h after highway in 6th gear.
I drove audi and hyundai with tiptronic before and they used to adjust it. Yes, It still gives you a feeling of controlling it but it has some protection as well. For example, driving over 6000rpm (in a manual mode) the transmission will give you 1-2 seconds for adjusting and will automatically shift itself up.
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- #4 of 9
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Re: Transmission question [toledo73]
by anry555
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Mar 25, 2009 (3:43 pm)
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Replying to: toledo73 (Mar 25, 2009 2:45 pm)
For example, as used by some cars, their five-speed Tiptronic will automatically make the upshifts from 1 to 2 when moving off from a stop, even when in manual mode; the transmission then waits for the user's upshift command before proceeding from 2 to 3, 3 to 4 and 4 to 5, although the transmission will still upshift if the redline is approached. On deceleration, the transmission will make all downshifts automatically when close to the tick-over or idle speed, to avoid running the engine at too-low an RPM, although the user can accelerate any downshift (that would not violate the redline), thus allowing improved engine braking, or preparation for intended acceleration.
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- #5 of 9
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Re: Transmission question [toledo73]
by md_outback
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Mar 25, 2009 (3:47 pm)
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Replying to: toledo73 (Mar 25, 2009 2:45 pm)
I'll have to agree with anry555 on this one. I've owned several cars with shiftable automatic transmissions (i.e. Tiptronic) and they all "automatically" downshifted to 1st gear after coming to a stop and the indicator on the dash reflected this. With my wife's Lexus IS, the indicator does not change when you come to a stop with the shifter in manual mode so it may appear like the car is still in 3rd gear. BUT the transmission has actually downshifted after the stop so you are really starting up in 1st gear even though the dash indicator continues to show 3rd until you are going fast enough to upshift to 4th or you switch to full automatic mode. Seems like a Toyota/Lexus thing.
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- #6 of 9
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Re: Transmission question [md_outback]
by wwest
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Mar 25, 2009 (5:51 pm)
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Replying to: md_outback (Mar 25, 2009 3:47 pm)
A "true" stick shift wouldn't automatically upshift so now that DBW can be used to prevent an over-rev why not? Same with downshifting...if the engine doesn't knock due to lugging what's the harm...??
And if it does knock due to lugging DBW can be used.....
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- #7 of 9
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Re: Transmission question [anry555]
by chadx
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Apr 08, 2009 (10:46 am)
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Replying to: anry555 (Mar 23, 2009 1:53 pm)
"...Just took Venza V6 and V4 for test drive...."
That would be i4 and V6. The four cylinder engine is an inline four, not a v-configurated four.
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- #8 of 9
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whine upon acceleration
by tollas
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Oct 27, 2009 (8:32 pm)
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I have a new 4 cylinder venza front wheel drive. Lately I hear a faint irritating whining noise when the car accelerates. I can't tell if it is the transmission or some other drivetrain assembly. It seems to be loudest on the passenger side. Any input or ideas?
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- #9 of 9
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Re: whine upon acceleration [tollas]
by halwick
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Oct 28, 2009 (12:33 pm)
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Replying to: tollas (Oct 27, 2009 8:32 pm)
Interesting that you mention that whine. I have a Venza 4-cyl and I haven't heard it....yet, but I did hear noticeably loud whine upon acceleration on a 2009 Toyota Corolla that I rented. The noise varied with engine speed. Hard to determine whether it was the engine or transmission.
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