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  #25  
Old 10-06-2014, 09:29 AM
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Re: 9 speed transmission?

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Originally Posted by jim383 View Post
Coming from 2 srt8 this cherokee tranny is way diff in its own way. I am finding out a lot of things just in testing. Yesterday i was in DRIVE and put it in manual mode and it was in 5th gear and slowed up to see if it would down shift into a lower gear my its self with out me moving the lever and it did. From what i have seen the tranny will not let you lug the motor no mater if its in drive or manual mode. Now another time i was on freeway and was coming to a incline so i put it in manual mode to see if it would down shift and it didnt so i down shifted my self BUT i may of not let it lug down the motor enough as i was on the freeway. Now even on my 2012 srt8 there was a big diff in shifting in auto and sports mode and the wife liked the sports mode for shifting but auto mode for the ride. I no 1 thing ill be using sports mode at the track lol.
The 9 speed in the Cherokee is a unique creature on its own.
It is not a manual shift in any way, nor does it have that option. Moving the shifter over(to the left) merely shows what gear you are presently in. Moving it up or down from that position again merely sets the max. gear the transmission is allowed to use. The TCM of the transmission will always determine the best gear to be in or shift to.
As an example I usually set the maximum gear to 7 when towing, thus avoiding extra pressure on the engine. That will over ride the TCM in shifting to 8th.
But I do wish there was a manual option for shifting on this Cherokee. That may be in the wind if they come out with a SRT version of the Cherokee, as rumor has it.

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  #26  
Old 10-17-2014, 01:56 PM
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Re: 9 speed transmission?

I have been reading about the manual mode on the nine speed transmission regarding manual mode just lets you set the highest gear. I have a 2015 Trail hawk and my manual mode lets me downshift or upshift like the old transmissions used too. Maybe new flash setting.
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  #27  
Old 10-17-2014, 02:32 PM
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Re: 9 speed transmission?

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Originally Posted by doogle View Post
I have been reading about the manual mode on the nine speed transmission regarding manual mode just lets you set the highest gear. I have a 2015 Trail hawk and my manual mode lets me downshift or upshift like the old transmissions used too. Maybe new flash setting.
Not really. Nothing has changed in that transmission for MY2015. What you are calling downshifting and upshifting is just between a preselected range when you move the selector to the left. You are just redefining the top and bottom shifts when you do that. The only thing different is the semantics between the posters and how they are describing this. There is no manuel mode with that particular transmission.
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Old 10-17-2014, 02:38 PM
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Re: 9 speed transmission?

No my friend the rpms increase as I lower the gear I can bring it down to first gear rpms go up to over 5000. I have been driving for over 50 years and have had numerous cars. I know what downshifting is.
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Old 10-17-2014, 03:00 PM
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Re: 9 speed transmission?

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Originally Posted by doogle View Post
No my friend the rpms increase as I lower the gear I can bring it down to first gear rpms go up to over 5000. I have been driving for over 50 years and have had numerous cars. I know what downshifting is.
We are going to have to agree to disagree. I stand by my statement that there is no manual mode in that transmission. I have one of the first Cherokee's built that I custom ordered. I have the exact same transmission that you have. Both transmissions were built in Indiana and there have been no major changes made to them except for some TSB flashes that mostly make things worse and not better. The whole trick to that transmission is in how you break it in. The first 500 miles are extremely important. If you want to throw credentials around. I am 64 years old with 3 earned college degrees. My parents both worked for Chrysler. My dad at the Trenton engine plant and the Trenton chemical (Cycleweld) plant, my mother was a top executive at the Detroit Desoto/Dodge assembly plant. I hope I am wrong on my guess. But if you are acting on information from the Jeep Cherokee Club website be very careful. Nobody screens things over there and lots of bad misinformation has been known to get out from there.
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  #30  
Old 10-17-2014, 03:10 PM
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Smile Re: 9 speed transmission?

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Originally Posted by doogle View Post
No my friend the rpms increase as I lower the gear I can bring it down to first gear rpms go up to over 5000. I have been driving for over 50 years and have had numerous cars. I know what downshifting is.
Maybe when you are bringing it down you are setting the max high gear lower. That would downshift to that gear on the spot.
That would give you your 5,000 rmp's trying to maintain that same speed.
In a way you could consider that a manual mode, but a rather sloppy manual mode. You could up shift the same way. I could see it working once mastered. Not much fun. Grinding the 4 speed on my old 1964 327 chev. many years ago was much more fun. I much more prefer to let the 9 speed do its job.
But I do limit it to 7th when towing.
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  #31  
Old 10-17-2014, 09:31 PM
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Re: 9 speed transmission?

I took delivery 2 weeks ago. It definitely downshifts in manual mode when - is pushed. It also upshifts when pushed + I don't know how high the gear will go but I have downshifted from 4 to first and had engine braking and RPM increases as the gears were selected all the way to 1. Maybe I should make a video of the gear selection and you see the rpms increasing but I will need a reward for the effort. LOL I have 455 miles and have not babied it and the transmission works beautifully.
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  #32  
Old 10-18-2014, 01:58 PM
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Re: 9 speed transmission?

Quote:
Originally Posted by doogle View Post
I took delivery 2 weeks ago. It definitely downshifts in manual mode when - is pushed. It also upshifts when pushed + I don't know how high the gear will go but I have downshifted from 4 to first and had engine braking and RPM increases as the gears were selected all the way to 1. Maybe I should make a video of the gear selection and you see the rpms increasing but I will need a reward for the effort. LOL I have 455 miles and have not babied it and the transmission works beautifully.
The owners manual describes what ERS is designed to do:

Electronic Range Select (ERS) Operation
The Electronic Range Select (ERS) shift control allows the
driver to limit the highest available gear. For example, if
you shift the transmission into 5 (fifth gear), the transmission
will not shift above fifth gear, but will shift
through the lower gears normally.

You can switch between DRIVE and ERS mode at any
vehicle speed. When the shift lever is in the DRIVE
position, the transmission will operate automatically,
shifting between all available gears.

Moving the shift lever to the ERS position (beside
DRIVE) will activate ERS mode, display the current gear
in the instrument cluster, and maintain that gear as the
top available gear. Once in ERS mode, moving the shift
lever forward (-) or rearward (+) will change the top
available gear.

To exit ERS mode, simply return the shift lever to the
DRIVE position.

NOTE: To select the proper gear position for maximum
deceleration (engine braking), move the shift lever into
the ERS position, then simply press and hold it forward
(-). The transmission will shift to the range from which
the vehicle can best be slowed down.


The 2015 Chrysler 200C with 9-speed transmission has paddle shifters. Maybe that one is a true manual-automatic. Don't know. From Chrysler.com:

Steering wheel-mounted paddle shifters are included on Chrysler 200C V6 engine-equipped models. The paddle shifters allow you to keep both hands on the steering wheel while shifting with a tap of your finger.
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  #33  
Old 10-18-2014, 02:28 PM
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Re: 9 speed transmission?

Thank you for stating more eloquently what I have been trying to say. The Cherokee transmission does not have a manual mode but you can define the top and bottom shifts.
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  #34  
Old 10-18-2014, 03:02 PM
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Re: 9 speed transmission?

Quote:
Originally Posted by Array View Post
The owners manual describes what ERS is designed to do:

Electronic Range Select (ERS) Operation
The Electronic Range Select (ERS) shift control allows the
driver to limit the highest available gear. For example, if
you shift the transmission into 5 (fifth gear), the transmission
will not shift above fifth gear, but will shift
through the lower gears normally.

You can switch between DRIVE and ERS mode at any
vehicle speed. When the shift lever is in the DRIVE
position, the transmission will operate automatically,
shifting between all available gears.

Moving the shift lever to the ERS position (beside
DRIVE) will activate ERS mode, display the current gear
in the instrument cluster, and maintain that gear as the
top available gear. Once in ERS mode, moving the shift
lever forward (-) or rearward (+) will change the top
available gear.

To exit ERS mode, simply return the shift lever to the
DRIVE position.

NOTE: To select the proper gear position for maximum
deceleration (engine braking), move the shift lever into
the ERS position, then simply press and hold it forward
(-). The transmission will shift to the range from which
the vehicle can best be slowed down.

The 2015 Chrysler 200C with 9-speed transmission has paddle shifters. Maybe that one is a true manual-automatic. Don't know. From Chrysler.com:

Steering wheel-mounted paddle shifters are included on Chrysler 200C V6 engine-equipped models. The paddle shifters allow you to keep both hands on the steering wheel while shifting with a tap of your finger.
Now that I have over 1000 miles on it I'll give the engine braking a try.
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  #35  
Old 10-18-2014, 05:18 PM
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Re: 9 speed transmission?

Guys, the manual also says we have an ECO mode. Why is it still difficult for people to understand that my transmission will downshift through the gears with the manual mode + or -... It will also upshift with the + Maybe I have the Chrysler 200 trans. LOL Maybe Jeep heard everyone crying about not be able to do it and made an update to the software. As stated, I took delivery 2 weeks ago had my trailhawk on order since 06-24 and ordered every option. MSRP window sticker 43,673.00 Maybe someone who took delivery in the last few weeks should go try it and report back. You guys are going to make me make a video and then have you all begging for an accepted apology. Have an open mind, things change, including auto features.
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  #36  
Old 10-18-2014, 06:08 PM
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Re: 9 speed transmission?

Gents,

The whole thread had made me wonder about this problem: how does one break in this tranny? The consensus seems to be that the first 500 miles are vital to its smooth operation, and potentially its longevity.

Suggestions?

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