2017 Sienna poor performance (vs 2013) - Toyota Sienna Forum - siennachat.com
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post #1 of 77 (permalink) Old 12-08-2016, 07:57 PM Thread Starter
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2017 Sienna poor performance (vs 2013)

Hi,

After our 2013 Sienna was totaled (after only a very minor rear-end collision) we purchased a new 2017.
Knowing how it drives, we didn't bother to make a test-drive - I know, not very smart.

AS soon as we had it (since last Saturday) we instantly noticed the complete lack of power. This van will NOT move at all! When leaving after a full stop, this van will not accellerate well. When on the highway trying to pass someone, it is near impossible to pick up speed.
Suspecting a problem with it, I went to a dealer and test-drove another one. It's the same thing!

Anybody else gone from a 2013 to a 2017 and noticed the significant drop in power?
Berrie
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post #2 of 77 (permalink) Old 12-09-2016, 01:51 PM
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Re: 2017 Sienna poor performance (vs 2013)

I think Toyota soften the throttle and lazy transmission shifting to save gas. Try the POWER setting (thru steering wheel control and that little screen on dash) which should improve transmission shifting. I am OK with the laziness.

2017 Sienna Limited Premium Silver/Chestnut
2015 Acura MDX SH-AWD with TECH
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post #3 of 77 (permalink) Old 12-09-2016, 02:20 PM
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Re: 2017 Sienna poor performance (vs 2013)

2017 uses different engine and transmission than the 2013 model.


2013 uses 2GR-FE and 6 speed auto
2017 uses 2GR-FKS and 8 speed auto


It's a power increase but different drivetrains will not feel the same. Try mashing the throttle a little more to tell the computer you're serious about wanting a downshift if changing the shift points doesn't help.
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post #4 of 77 (permalink) Old 12-09-2016, 07:59 PM
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Re: 2017 Sienna poor performance (vs 2013)

Beside the gas saving, I believe they are designed like this for the average minivan driver who isn't looking for direct access to that much power. The power is on tap, but it takes some mashing of the pedal. I find in the city driving I do that the throttle range is perfect for safe driving.

I'm coming from an incredibly reliable 1992 Previa to this '17. The Previa's cable-driven throttle felt more direct. In this car it would be harder to drive.

Car and Driver says that the throttle response is that way to prevent small, bump-related inputs, and referred to it as "irritating." I like it, but a faster driver may not. ECT Power is there, but at a cost of MPG.

The tranny's really different too, but the engine is so quiet that I don't notice gear changes. Hunting through those gears takes time though.
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post #5 of 77 (permalink) Old 12-10-2016, 11:37 AM Thread Starter
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Re: 2017 Sienna poor performance (vs 2013)

Hi,

Thank you for the responses.
I did try the ECT mode. All it appears to do is move the gear switching points to a higher rpm, it does not give more power.

I personally like a sporty drive, but it is my wife's van and she doesn't.
She is frequently referred to as my "Sunday afternoon grandma" by most who have had the questionable pleasure of driving with her.
And even she complains that this van will not move.
We live kinda out-there where we have to enter some busy 65mph county roads without acceleration strip. Without having the power we used to, that is now really a challenge.
I do appreciate that the throttle is less sensitive the first little activation, but after that is really should have a lot more up-'n-go, especially having 30 more hp.
We'll see if we can get used to it. If not, we'll get something else.
Berrie
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post #6 of 77 (permalink) Old 12-10-2016, 12:44 PM
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Re: 2017 Sienna poor performance (vs 2013)

Mechanical throttles are very linear. Move the gas pedal a half inch, and the throttle plate moves 15 degrees. Push it another half inch, you get another 15 degrees.

An electronic throttle can be anything the software guy wants it to be.

Some can be manipulated thru an interface like Techstream. A guy over on the Subaru board reported that he remapped his throttle to get rid of some of the jumpiness off the line, and improve midrange response.

Other throttles are self learning. Repeatedly push hard and over time the system might be capable of learning that you want to do an 'aircraft carrier catapult' launch from stop signs. Tickle it all the time, and the system will learn to advance thru the gears earlier to aid fuel economy. All I can say is try different modes of driving and report back if you see any improvement.

Current: '15 Sienna Limited Premium (FWD), '14 Subaru Outback, '13 Honda CRV AWD.

Past: '08 Sienna LE (FWD), '02 Subaru Outback, '02 Honda Odyssey EX
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post #7 of 77 (permalink) Old 12-10-2016, 03:09 PM
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Re: 2017 Sienna poor performance (vs 2013)

Quote:
Originally Posted by Berrie View Post
Hi,

Thank you for the responses.
I did try the ECT mode. All it appears to do is move the gear switching points to a higher rpm, it does not give more power.

I personally like a sporty drive, but it is my wife's van and she doesn't.
She is frequently referred to as my "Sunday afternoon grandma" by most who have had the questionable pleasure of driving with her.
And even she complains that this van will not move.
We live kinda out-there where we have to enter some busy 65mph county roads without acceleration strip. Without having the power we used to, that is now really a challenge.
I do appreciate that the throttle is less sensitive the first little activation, but after that is really should have a lot more up-'n-go, especially having 30 more hp.
We'll see if we can get used to it. If not, we'll get something else.
Berrie
I'm surprised that there's not enough power to merge to a full speed road with a <7.0 sec. 0-60 time.

Last edited by bradly1101; 12-10-2016 at 03:11 PM.
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post #8 of 77 (permalink) Old 12-12-2016, 09:31 PM Thread Starter
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Re: 2017 Sienna poor performance (vs 2013)

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Originally Posted by bradly1101 View Post
I'm surprised that there's not enough power to merge to a full speed road with a <7.0 sec. 0-60 time.
There IS enough power.
However, the 2013 would do it with far less than half throttle and not get over 3,000rpm.
To get the same power with the new one I have to almost floor it and pull it to 5,000rpm.
Not something I like to do, especially not with a brand new car.
We usually drive our cars problem-free for 200,000 miles. Revving them that high - in the mornings with an only half-warm engine - is not conducive to a long and problem-free life.
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post #9 of 77 (permalink) Old 12-12-2016, 10:29 PM
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Re: 2017 Sienna poor performance (vs 2013)

It looks like that's how it's designed since you are not alone (unless this is you): http://www.toyotanation.com/forum/27...ts-normal.html

Current: 2017 Sienna L
Past: 1992 Previa, 1989 Camry, 1980 Corolla
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post #10 of 77 (permalink) Old 12-13-2016, 11:32 AM
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Re: 2017 Sienna poor performance (vs 2013)

I think that it is due to new transmission gearing (8 gears vs. 6)...and that software is revving engine higher by keeping it in lower gears instead of upshifting to higher gear to get powertrain warmer faster??

This powertrain has been in Lexus for many years...i doubt that it is anything to worry about.

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post #11 of 77 (permalink) Old 12-13-2016, 11:34 AM
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Re: 2017 Sienna poor performance (vs 2013)

Quote:
Originally Posted by Berrie View Post
We'll see if we can get used to it. If not, we'll get something else.
Berrie
Seriously?!! Come on! It is a freaking MINIVAN! The drama is overbearing! LOL

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post #12 of 77 (permalink) Old 12-13-2016, 12:02 PM
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Re: 2017 Sienna poor performance (vs 2013)

Berrie, I'll buy that piece of crap for $25k.
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post #13 of 77 (permalink) Old 12-13-2016, 01:16 PM
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Re: 2017 Sienna poor performance (vs 2013)

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Originally Posted by lipster View Post
Berrie, I'll buy that piece of crap for $25k.
Berrie, i will buy it for $24,599!!

2017 Sienna Limited Premium Silver/Chestnut
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post #14 of 77 (permalink) Old 12-13-2016, 09:22 PM Thread Starter
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Re: 2017 Sienna poor performance (vs 2013)

Quote:
Originally Posted by bradly1101 View Post
It looks like that's how it's designed since you are not alone (unless this is you): http://www.toyotanation.com/forum/27...ts-normal.html
No, that's not me.
At least I know now that I'm not the only one.

As far as the (lowball) offers to purchase it from me... KEEP DREAMING!
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post #15 of 77 (permalink) Old 12-13-2016, 10:15 PM
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Re: 2017 Sienna poor performance (vs 2013)

I too wonder if this may have something to do with the temp. of the engine/trans. I remember in my Previa (4sp.), when I used to live near a fwy. on-ramp, that if I got on the fwy. cold it would stay in 3rd at 55mph. It would shift up after a short while though and from then on act normal.

Current: 2017 Sienna L
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