Another Transmission Issue - Page 3 - Jeep Renegade Forum
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post #21 of 33 (permalink) Old 07-25-2019, 11:23 AM
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Originally Posted by Snooks130 View Post
That's EXACTLY how mine is.
I've paid for a bunch of "repairs", none of which helped. They replaced the transmission last week under the power train warranty and honestly, it's worse than it was before.
I'm kinda stuck.
I just bought the car in Feb, with only 36,000 miles. The dealer has had it over 10 days total. So I have a new car, can't ever drive it, need to find backup transportation, AND it still doesn't work right. 😭
I really want to love this car. I need to love this car for at least the next 5 years till it's paid off I guess, no one is going to buy it with the way it hesitates like this.
Hi Snooks130,
We understand your concern. We'd be happy to connect you with a Case Specialist if you plan to continue working with your dealer to address this. If you'd like the additional assistance, please send us a private message!

Lydia
Jeep Social Care Specialist
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post #22 of 33 (permalink) Old 07-25-2019, 06:05 PM
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Originally Posted by RenegadeOfFunk View Post
It surprises me that you people say you're having transmission problems and then describe behavior that is completely normal for this transmission. It is not a traditional torque converter automatic. It is a torque converter automatic with two dog clutches. I may be wrong, but I understand the first clutch engages with first gear, and the second clutch between 4th and 5th (or 3rd and 4th?)

This means that when taking off from first gear it will act like a manual transmission and will have that lurch forward that you describe and a delay between 4th and 5th. It is a normal characteristic of this transmission and does not indicate an issue. A software update could help smoothen it out a bit, but so far it seems that a software problem has not been a universal fix. As I have read above, one of you had a new transmission and that also did not solve it. The only way to solve it is to remove the clutches and convert this to a normal torque converter automatic.

If you've ever driven a Dual Clutch Transmission (which works different to what I have described above), you would also notice the lurch when taking off from first gear. My mom's Mini with the DCT also has it. Automatized manual transmissions, such as the Duoselect in the 2005 Maserati Quattroporte, the F1 transmissions in mid 2000s Ferraris, and the SMG in the V10 M5 also has this characteristic, and in these cars I mention, it is even more pronounced than on the Jeep.

As long as you don't have grinding, groans, or whines from the transmission, and it isn't slipping, then your transmission is fine and operating as it should.
Why would it start at 40 k then?
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post #23 of 33 (permalink) Old 07-25-2019, 09:17 PM
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Why would it start at 40 k then?

Did it really? I ask because in post 18 of this thread you said, and I quote:

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Originally Posted by Snooks130
I've had this problem since I bought my renege at 36,000 miles (currently at 44k).
Which means you have no evidence of it happening before 36k miles because you were not the owner of your Jeep before then.

On mine I have noticed it since it left the dealer lot at 76 miles and now at 28,128 miles it still has that same behavior and it has never been a problem. When I started reading about the issues of the transmission on this forum two years ago I took it to a Jeep certified independent mechanic as well as a local indie BMW mechanic friend of mine and told them to drive it and pay attention to the transmission. Neither of them found anything wrong with its behavior. The BMW mechanic said "it almost feels like an SMG but with slower shifts". The Jeep mechanic said it's working normally and as it should.

The Renegade is not a refined vehicle. This is one way that shows.
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post #24 of 33 (permalink) Old 07-25-2019, 09:38 PM
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Originally Posted by Snooks130 View Post
Why would it start at 40 k then?

Did it really? I ask because in post 18 of this thread you said, and I quote:

Quote:
Originally Posted by Snooks130
I've had this problem since I bought my renege at 36,000 miles (currently at 44k).
Which means you have no evidence of it happening before 36k miles because you were not the owner of your Jeep before then.

On mine I have noticed it since it left the dealer lot at 76 miles and now at 28,128 miles it still has that same behavior and it has never been a problem. When I started reading about the issues of the transmission on this forum two years ago I took it to a Jeep certified independent mechanic as well as a local indie BMW mechanic friend of mine and told them to drive it and pay attention to the transmission. Neither of them found anything wrong with its behavior. The BMW mechanic said "it almost feels like an SMG but with slower shifts". The Jeep mechanic said it's working normally and as it should.

The Renegade is not a refined vehicle. This is one way that shows.
Honestly, although it FEELS like it's been happening since the day I bought it, it was about 3 weeks after. If it had done it during the test drive, I would have passed it up for a different car.
Not to mention, I was told that buttoning through 2 quarts of oil every 1000 miles is also normal. Found that out the hard way, by stalling, with no warning.
I REALLY REALLY want to love this car.
And I guess really I'm to blame for not researching better beforehand.
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post #25 of 33 (permalink) Old 07-25-2019, 11:32 PM
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Originally Posted by Snooks130 View Post
Honestly, although it FEELS like it's been happening since the day I bought it, it was about 3 weeks after. If it had done it during the test drive, I would have passed it up for a different car.
Not to mention, I was told that buttoning through 2 quarts of oil every 1000 miles is also normal. Found that out the hard way, by stalling, with no warning.
I REALLY REALLY want to love this car.
And I guess really I'm to blame for not researching better beforehand.

The 2 quarts of oil every 1000 miles is not normal, despite what FCA says. Mine uses maybe half a quart every time 6,000 miles.
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post #26 of 33 (permalink) Old 07-26-2019, 06:10 AM
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At transmissions has lag close to shifting points... If you're skilled enough you even can do your clutch clapping like Spanish castanets... Nonetheless I Knew those old renegades has transmission problems. Clutches exploded etc. That's why I preferred to buy an end series (2018 models)
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post #27 of 33 (permalink) Old 07-26-2019, 10:16 PM
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The renegade transmission isn't radically different from normal ones, at least not shifting through the first 5 gears (or 4 for trailhawks since first gear on those is low range only).

And there should be no slamming when the dog clutch engages/disengages to take it from 5th gear to 6th gear and 7th gear to 8th gear. The engine is not supposed to put any power through the transmission until that dog clutch is fully engaged or disengaged because there is no slip in that type of gear (if there was, it would be destroyed).

That special dog clutch is the reason for the lag when you floor it on the highway and it has to downshift through gears 8-7 and 6-5 and the engine cannot apply any power during those shifts.

When you accelerate from a dead stop it should operate and shift like any normal automatic transmission from first through 5th gear.

If it is slamming, that means it is malfunctioning. It shouldn't slam on shifting into drive, or through 5th gear, there should be NO POWER at all applied by the computer when shifting into 6th and 8th (and hence no slamming whatsoever).

The only thing special in these transmissions (dog clutches) engage on the highway only, and there should be no slamming whatsoever when it engages/disengages.

What it boils down to is there's something wrong with your transmission.

Before the fuel economy requirements got unreasonable, transmissions were simple and we didn't have these kinds of problems. 9 gears is RIDICULOUS. Loose rings that consume a quart of oil in 2000 miles to gain a little bit more fuel economy are RIDICULOUS.

The auto companies had to do such stupid things to make cars that would meet the new fuel mileage requirements.

The way this transmission works (and how dog clutches work) is explained in detail here.

https://www.thetruthaboutcars.com/20...-on-the-leash/
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post #28 of 33 (permalink) Old 07-27-2019, 01:48 PM
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The renegade transmission isn't radically different from normal ones, at least not shifting through the first 5 gears (or 4 for trailhawks since first gear on those is low range only).

And there should be no slamming when the dog clutch engages/disengages to take it from 5th gear to 6th gear and 7th gear to 8th gear. The engine is not supposed to put any power through the transmission until that dog clutch is fully engaged or disengaged because there is no slip in that type of gear (if there was, it would be destroyed).

That special dog clutch is the reason for the lag when you floor it on the highway and it has to downshift through gears 8-7 and 6-5 and the engine cannot apply any power during those shifts.

When you accelerate from a dead stop it should operate and shift like any normal automatic transmission from first through 5th gear.

If it is slamming, that means it is malfunctioning. It shouldn't slam on shifting into drive, or through 5th gear, there should be NO POWER at all applied by the computer when shifting into 6th and 8th (and hence no slamming whatsoever).

The only thing special in these transmissions (dog clutches) engage on the highway only, and there should be no slamming whatsoever when it engages/disengages.

What it boils down to is there's something wrong with your transmission.

Before the fuel economy requirements got unreasonable, transmissions were simple and we didn't have these kinds of problems. 9 gears is RIDICULOUS. Loose rings that consume a quart of oil in 2000 miles to gain a little bit more fuel economy are RIDICULOUS.

The auto companies had to do such stupid things to make cars that would meet the new fuel mileage requirements.

The way this transmission works (and how dog clutches work) is explained in detail here.

https://www.thetruthaboutcars.com/20...-on-the-leash/


That's very interesting. I wasn't really sure in between which gears the dog clutches were located. Mine has no slamming, but it does have a delay in between some gears and from a stand still from first gear it lurches a bit, not from second gear though. Although, it really feels like that's more something to do with the gearing.

From what the other guy described, he was talking about lurching, not slamming.
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post #29 of 33 (permalink) Old 08-01-2019, 08:12 PM
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kman: Thanks for the good link. I had to read it twice to understand it and it was worth the work. It explains everything. In my opinion, a transmission should work the same way all the time. That is a matter of customer satisfaction, especially in that sometimes, but not always, it downshifts multiple gears and pauses after goosing the throttle, as in starting to pass on the highway. I would say ZF made a poor design choice and Chrysler made a poor transmission selection. I wish I had done more research before buying my Rene. However, it is good enough that I will live with it instead of selling it just because of this.
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post #30 of 33 (permalink) Old Yesterday, 02:39 PM
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2016 Trailhawk also jerking in shift changes

Came on here as a new Jeep Renegade Trailhawk owner (2016, 35,000 miles) because of what sounds like the same issue others are experiencing. Mine tugs back on accelerating specifically shifting I think from 1st to 2nd gear (around 14-18mpg). That is the most noticeable and consistent tug, but I have also felt it when it seems to shift to other gears. I had a CRV before this, but also drove an old 1990 landcruiser for fieldwork and have driven a wide enough range of manual and automatic cars to know this doesn't feel right. I noticed something similar on a Rav4 and thought it was a transmission issue and didn't buy it. Somehow I missed this on the test drive. It reminds me of not when I fail to shift smoothly with a manual. I've also noticed a lag making a turn at a stop and in shifting from reverse, but it's the 1st to 2nd gear shift that really jolts me. Not sure if I should take it in (have a 60 day warranty but at a dealer over 100 miles away) in case it is something else causing this? Also since I am here, my jeep seems awfully bouncy at low speeds (25mpg and under). Is that just because of the suspension for off roading coupled with being a light vehicle? I currently have a love hate relationship with my Trailhawk and missing my 04 CRV.
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