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Old 01-14-2021, 05:17 PM   #295
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We’re headed to the local Jeep dealer tomorrow for some warranty work. I’ll check to see if they can provide some information and report back. Based on the comments, I do not have high expectations.

But, this is good news even though this has only happened to us once in 15K miles—the first ray of light in quite a while.
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Old 01-15-2021, 10:20 AM   #296
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Just got this email from Jeep Customer Service ...

According to available information, the flat tow electric power steering enable kit is in development. When released, the part number should be 82216418AA. We recommend remaining in contact with the parts department at your authorized dealership for part availability updates and to verify part information.

NOTE: Part number is subject to change.

Sincerely,
Joe
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Old 01-15-2021, 11:30 AM   #297
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Now the question is will work and all years with the wobble problems or just 2021 model year?
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Old 01-15-2021, 05:03 PM   #298
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Quote:
Originally Posted by DebbieMH View Post
Just got this email from Jeep Customer Service ...

According to available information, the flat tow electric power steering enable kit is in development. When released, the part number should be 82216418AA. We recommend remaining in contact with the parts department at your authorized dealership for part availability updates and to verify part information.

NOTE: Part number is subject to change.

Sincerely,
Joe
The part number listed already exists. It's for a 7 way trailer towing harness that i assume is used if your GC didn't come with a trailer tow package.
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Old 01-23-2021, 07:44 AM   #299
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Now the question is will work and all years with the wobble problems or just 2021 model year?
We had a warranty item repaired on our 2018 Jeep Grand Cherokee this week and asked them to check on the part. They did—and told us the part will only work on 2021 models and later.

Like all first responses, I don’t know that this is really the case. We’ll continue to ask as this may not be accurate.
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Old 02-08-2021, 07:11 PM   #300
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I have a 2021 Grand Cherokee 80th anniversary model, which is based on the limited GC.

No death wobble, but a different issue with EPS steering system.

Anytime I put the transfer case in neutral, the EPS is disabled so very hard to turn the steering wheel. After taking tansfer case OUT of neutral, the EPS is STILL disabled.

I "think" it resets after around 5 minutes. I have done multiple restarts after transfer engaged again - but that does not help. Changing EPS assist level in the screen also does not help.

Today was our first time towing, and after disconnecting and transfer case back in gear very difficult to steer.

Since this first episode I have tested it 8 times in the campground with jeep not hooked to motorhome. Same result every time after transfer cas has been in neutral.

I will be contacting Jeep, but has anyone here exeperienced this? Or is it a new issue no one else has seen?
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Old 02-09-2021, 04:33 AM   #301
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Quote:
Originally Posted by drw907 View Post
I have a 2021 Grand Cherokee 80th anniversary model, which is based on the limited GC.

No death wobble, but a different issue with EPS steering system.

Anytime I put the transfer case in neutral, the EPS is disabled so very hard to turn the steering wheel. After taking tansfer case OUT of neutral, the EPS is STILL disabled.

I "think" it resets after around 5 minutes. I have done multiple restarts after transfer engaged again - but that does not help. Changing EPS assist level in the screen also does not help.

Today was our first time towing, and after disconnecting and transfer case back in gear very difficult to steer.

Since this first episode I have tested it 8 times in the campground with jeep not hooked to motorhome. Same result every time after transfer cas has been in neutral.

I will be contacting Jeep, but has anyone here exeperienced this? Or is it a new issue no one else has seen?

I have the 2020 GC Limited 4x4. I haven't noticed the delayed EPS response you are describing. Since typically I am unhooking by myself, it could be that enough time passed before moving the GC. I typically put everything away before moving it. I'll have to pay attention to this.
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Old 02-09-2021, 07:26 AM   #302
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Quote:
Originally Posted by drw907 View Post
I have a 2021 Grand Cherokee 80th anniversary model, which is based on the limited GC.

No death wobble, but a different issue with EPS steering system.

Anytime I put the transfer case in neutral, the EPS is disabled so very hard to turn the steering wheel. After taking tansfer case OUT of neutral, the EPS is STILL disabled.

I "think" it resets after around 5 minutes. I have done multiple restarts after transfer engaged again - but that does not help. Changing EPS assist level in the screen also does not help.

Today was our first time towing, and after disconnecting and transfer case back in gear very difficult to steer.

Since this first episode I have tested it 8 times in the campground with jeep not hooked to motorhome. Same result every time after transfer cas has been in neutral.

I will be contacting Jeep, but has anyone here exeperienced this? Or is it a new issue no one else has seen?
Wow! That seems like the opposite of what "should" happen.

On the similar issue with the KL Cherokee, the FCA-Jeep solution was to provide circuitry which turned EPS on, manually while towing, after the TC was put into neutral. Someone had conjectured that an "automatic way" to activate EPS would be to be triggered by the PTU being set to neutral and the vehicle starts moving. Even with the 'manual way" the KL stays in EPS for some time after the manual de-activation.
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Old 02-09-2021, 07:50 AM   #303
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On the delay of EPS power steering assist that I am seeing on our 2021 GC after engaging neutral on transfer case, and then later re-engaging the transfer case.

If anyone is willing to do a driveway test by putting transfer case into neutral, then re-engage, and check if power steering assist works immediately it would be helpful.

Be great if we can get both 2021 and also previous year tested.

I am also "wondering" if Jeep has done somethng different on the 2021 models from previous.

I base this on above posts: "According to available information, the flat tow electric power steering enable kit is in development." (for Grand Cherokee)

"We had a warranty item repaired on our 2018 Jeep Grand Cherokee this week and asked them to check on the part. They did—and told us the part will only work on 2021 models and later."

Page 160 of the 2021 owners manual states: "A flat tow electric power steering kit is available for increased flat tow perormance, contact a authorized dealer for further details".
*** We know that previously ONLY Cherokee not Grand Cherokee had this kit available. This makes me wonder if Jeep has changed software setting or something else on the 2021.

I am a full time RV traveler. Bought the GC a couple months ago, first time towing yesterday. Followed the procedures in the manual line by line for towing/transfer case.

Up coming Jeep dealers on our route: We are in Grants Pass OR for one week, Brookings OR for 6 days, Newport OR for 20 days, then later on another 20 days in Newport once again.

Hopefully one of these dealers can fit us in and figure it out. Besides the factory warranty I also have the Mopar Maximum Care warranty.
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Old 02-09-2021, 10:58 AM   #304
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I resolved the no power to the steering issue (EPS) after transfer case neutral.

Once the transfer case is re-engaged and in gear, and the vehicle is turned off, power is still showing on the transmission lights by the shifter for a time. This tells the EPS to not enage steering assist (EPS thinks transfer case is still in neutral).

If on the "radio" head unit, under key off options, key off power delay and headlights off delay are enabled, add that time to key off (unless you open door to kill the delay time). In addition another 15 to 30 seconds of key off still required before lights on transmission display are off.

By setting the head unit key off options, key off power delay and headlight off power delay, to zero seconds, then 15 to 30 seconds of key off is enough time for the lights on the trans display to go out. At that point restarting the vehicle, EPS power steering works correctly.

So it is a timing issue of how long the Jeep must have no power before EPS steering assist works again.

Multiple restarts do not work to reset the EPS unless the total time off is met first.
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Old 02-09-2021, 11:03 PM   #305
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I ordered a 2021 Jeep Grand Cherokee Trailhawk today and as part of the process, I asked about the "page 160 of the 2021 owners manual states: 'A flat tow electric power steering kit is available for increased flat tow performance, contact a authorized dealer for further details.' The sales manager had never heard of the part and called the parts manager and the service manager who had also never heard of the part (after trying to tell me that it was the tow wiring harness found in the glove box). I explained that the part was not related to connecting the jeep to other vehicles, but rather for power steering as noted in the manual. He agreed to research with Jeep to get an answer and to pay an agreed amount towards the part. I am not holding my breath.
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Old 02-10-2021, 09:10 AM   #306
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Quote:
Originally Posted by drw907 View Post
I resolved the no power to the steering issue (EPS) after transfer case neutral.

Once the transfer case is re-engaged and in gear, and the vehicle is turned off, power is still showing on the transmission lights by the shifter for a time. This tells the EPS to not enage steering assist (EPS thinks transfer case is still in neutral).

If on the "radio" head unit, under key off options, key off power delay and headlights off delay are enabled, add that time to key off (unless you open door to kill the delay time). In addition another 15 to 30 seconds of key off still required before lights on transmission display are off.

By setting the head unit key off options, key off power delay and headlight off power delay, to zero seconds, then 15 to 30 seconds of key off is enough time for the lights on the trans display to go out. At that point restarting the vehicle, EPS power steering works correctly.

So it is a timing issue of how long the Jeep must have no power before EPS steering assist works again.

Multiple restarts do not work to reset the EPS unless the total time off is met first.
Agree that this is a perplexing and frustrating problem, but it really not related at all to Death Wobble, correct? The death wobble problem in these newer EPS-steering equipped Jeeps is caused because there is not ENOUGH resistance when the car is off and the resistance is only coming from the mechanical components. In brief - the resistance from the turned-off electric steering assist motor is not the same as "traditional" hydraulic power steering's "off" resistance. The "fix" on the Cherokee models (not Grand Cherokee), is to POWER the EPS such that it could provide resistance that more simulates a "off" hydraulic system. Allegedly, this powering of the EPS has been effective - but at the expense of consuming limited battery power.
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Old 03-04-2021, 09:16 AM   #307
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Originally Posted by DebbieMH View Post
Just got this email from Jeep Customer Service ...

According to available information, the flat tow electric power steering enable kit is in development. When released, the part number should be 82216418AA. We recommend remaining in contact with the parts department at your authorized dealership for part availability updates and to verify part information.

NOTE: Part number is subject to change.

Sincerely,
Joe
Quote:
Originally Posted by ernieh View Post
The part number listed already exists. It's for a 7 way trailer towing harness that i assume is used if your GC didn't come with a trailer tow package.
Hey all.....new owner of a 2021 Grand Cherokee here....just picked up last night!
Thanks to this thread, I had some insight and asked the parts guy about this "harness".

On his own, he came up with the same part number, 82216418AA, for this vehicle with regards to the EPS issue. According to his information, this has been made available as of February 2021. He was only able to locate one unit in the United States (Kentucky, I think.....)

When I look it up today, I find the description to be inline;
"Wiring harness enables vehicle to be flat towed behind an RV. It powers the electric power steering, but only two-speed transfer cases are capable of being flat towed. This kit includes wiring harness, switch cover, tie straps, splice kits and I-sheet."

Fitment
Make Model Year
Dodge Durango 2018, 2019, 2020, 2021
Jeep Grand Cherokee 2018, 2019, 2020, 2021

Price $225

https://store.mopar.com/accessories/...2216418AA.html
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Old 03-04-2021, 10:06 AM   #308
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Quote:
Originally Posted by drw907 View Post
I resolved the no power to the steering issue (EPS) after transfer case neutral.

Once the transfer case is re-engaged and in gear, and the vehicle is turned off, power is still showing on the transmission lights by the shifter for a time. This tells the EPS to not enage steering assist (EPS thinks transfer case is still in neutral).

If on the "radio" head unit, under key off options, key off power delay and headlights off delay are enabled, add that time to key off (unless you open door to kill the delay time). In addition another 15 to 30 seconds of key off still required before lights on transmission display are off.

By setting the head unit key off options, key off power delay and headlight off power delay, to zero seconds, then 15 to 30 seconds of key off is enough time for the lights on the trans display to go out. At that point restarting the vehicle, EPS power steering works correctly.

So it is a timing issue of how long the Jeep must have no power before EPS steering assist works again.

Multiple restarts do not work to reset the EPS unless the total time off is met first.
I concur entirely with your findings!!
Thank you for posting....the dealer had NO IDEA about this issue. This saved the sales deal too, as I would not have purchased if I thought there was a "defect" in the vehicle!

We just bought a 2021 Grand Cherokee last night.
Prior to signing, we placed the transfer case in neutral. After completing that, we reengaged the transfer case. All of this was while the motor was running.
Salesman said...take it for a test drive....I could hardly turn the steering wheel as the EPS was not "activated". Turning the engine off then on again changed nothing.

Having read this post before, we turned the motor off then waited for the delayed headlights, etc. to turn off completely. Once that happened, fired up the motor and the EPS was normal.

Thanks again for your post!
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