11/28 Q/A Session - 2008 Jeep Liberty

JeepEngineers · 11-28-2007, 02:59 PM

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Go ahead and post your questions!!

**XJK** · 11-28-2007, 03:06 PM

Thank you guys for coming once again

My question is. did you guys put any thought into making the 08 Libby a SA design? or was that decided against from the start?

-Kyle

**grogie** · 11-28-2007, 03:06 PM

Hello! First, my wife and I have an '04 KJ Limited that we really enjoy, and it's a nice compliment to our '06 TJ. The KJ has been problem free and you guys did a great job engineering it. When we bought it, it was just what we wanted and have had no regrets, as for paying under 30k, it has an awesome four wheel drive, the V6 fits it fine, nice ride, has plenty of room inside, and it has a sharp interior. The only reason I can see that we'll sell it when it's paid off is to upgrade to a WK with either a CRD or HEMI for more towing power.

Question: SelecTrac: We always use the full-time four wheel drive whenever the roads get wet. I know that it should not be engaged at over 55 mph, however is it fine to use the full-time at over 55 mph, such as on the interstate during a rain storm at 65 mph (not on snow or ice at that speed of course

). Plus is there more wear to the KJ by using the full-time a lot?

Thanks!

**grogie** · 11-28-2007, 03:10 PM

Next: I recently upgraded tires from the stock size 235/70/16 to 245/70/16. I had heard that this slightly larger tire size would not rub (on a forum), however I do get a rub from the front driver's side tire, when backing and turning the wheel all the way to the right (sounds like it is rubbing on the inside of the wheel well). As the rub really doesn't bother me, is there anything that I can do to correct that (besides going back to previous size

)?

**TellyDSP** · 11-28-2007, 03:11 PM

On my 07 Ram, there are instructions in the manual to "program" the truck to unlock ALL doors when the driver opens their door. There are also instructions to turn of the seatbelt reminder tone.

These instructions are not found in my father's 06 Lib manual, and I was wondering if there is a process that can "program" both of these functions since they are DC? Mainly the All Unlock feature. It's a PITA to get to the rear door and find out it's still locked. If this is not something the owner can do at home, can it be flashed by a dealer?

Thanks...

JeepEngineers · 11-28-2007, 03:12 PM

Quote:

Originally Posted by Kyle Deidrick

Thank you guys for coming once again

My question is. did you guys put any thought into making the 08 Libby a SA design? or was that decided against from the start?

-Kyle

Kyle,

Since the existing KJ was already IFS and arguably a sales success, SFA honestly wasn't considered. The Liberty IFS is a fairly robust design and offers and excellent balance between on-road and off-road performance.

Thanks!

Limitedguy · 11-28-2007, 03:12 PM

Hello! picking up a new 08 Limited tonight. How come the automatic wipers were not out in time on the new liberty?

jeepjeepster · 11-28-2007, 03:12 PM

Was the Dana30a redesigned for the KK? It seems as if the Dana30a was not Engineered to handle offroading as many guys are finding out the hard-way.

If the dana30a is any stronger on the KK, would it be possble to swap it over to the Kj?

**grogie** · 11-28-2007, 03:14 PM

On the subject of ABS (which back in '04 I had to look hard to find a KJ with ABS): Is the rumor true that the ABS disengages when in 4-LOW, and if so, is that also true in any other Jeeps with ABS (like a TJ with ABS)?

JeepEngineers · 11-28-2007, 03:16 PM

Quote:

Originally Posted by Limitedguy

Hello! picking up a new 08 Limited tonight. How come the automatic wipers were not out in time on the new liberty?

First, thanks for purchasing a new Liberty! The automatic wipers have always been planned as a late avilabilty feature.

JeepEngineers · 11-28-2007, 03:19 PM

Quote:

Originally Posted by grogie

Hello! First, my wife and I have an '04 KJ Limited that we really enjoy, and it's a nice compliment to our '06 TJ. The KJ has been problem free and you guys did a great job engineering it. When we bought it, it was just what we wanted and have had no regrets, as for paying under 30k, it has an awesome four wheel drive, the V6 fits it fine, nice ride, has plenty of room inside, and it has a sharp interior. The only reason I can see that we'll sell it when it's paid off is to upgrade to a WK with either a CRD or HEMI for more towing power.

Question: SelecTrac: We always use the full-time four wheel drive whenever the roads get wet. I know that it should not be engaged at over 55 mph, however is it fine to use the full-time at over 55 mph, such as on the interstate during a rain storm at 65 mph (not on snow or ice at that speed of course

). Plus is there more wear to the KJ by using the full-time a lot?

Thanks!

Thank you for your question! Regarding operating speeds for SelecTrac AWD, it is ok to drive above 55 mph in the full time AWD mode, provided road conditions are appropriate for high speed driving. The driveline is designed to operate continuously in all wheel drive, so you should not expect abnormal wear from frequent use of all wheel drive.

Have Fun Out There!

Jeep Engineering

**XJK** · 11-28-2007, 03:21 PM

Quote:

Originally Posted by JeepEngineers

Kyle,

Since the existing KJ was already IFS and arguably a sales success, SFA honestly wasn't considered. The Liberty IFS is a fairly robust design and offers and excellent balance between on-road and off-road performance.

Thanks!

Im curious as to what test were done to determine how off-road worthy the KK is. Did you guys compare it to other vehicles? Use a course?

To be honest i do like the design quite a bit on the KK, the IFS is the only thing turning me away but i am very confident that you guys are heading back in the right direction

-Kyle

JeepEngineers · 11-28-2007, 03:23 PM

Quote:

Originally Posted by grogie

On the subject of ABS (which back in '04 I had to look hard to find a KJ with ABS): Is the rumor true that the ABS disengages when in 4-LOW, and if so, is that also true in any other Jeeps with ABS (like a TJ with ABS)?

For KK there is a unique ABS/ESP/BTC calibration that is enabled in 4L0. It allows for greater wheel slip speeds than 2WD/4HI operation but is not disengaged. The BTC (Brake Traction Control) allows for torque to shift to a wheel with traction by appying brake pressure to the wheel that is slipping. This is very advantageous for off-roading and requires the ABS system to be working. Thanks for the question - but I can't speak for your TJ question.

JeepEngineers · 11-28-2007, 03:24 PM

Quote:

Originally Posted by TellyDSP

On my 07 Ram, there are instructions in the manual to "program" the truck to unlock ALL doors when the driver opens their door. There are also instructions to turn of the seatbelt reminder tone.

These instructions are not found in my father's 06 Lib manual, and I was wondering if there is a process that can "program" both of these functions since they are DC? Mainly the All Unlock feature. It's a PITA to get to the rear door and find out it's still locked. If this is not something the owner can do at home, can it be flashed by a dealer?

Thanks...

If Vehicle is a limited , you can do that in EVIC. You are comparing two different architectures. If no procedure is available for 06KJ , that must be the corporate strategy for that architecture.

**grogie** · 11-28-2007, 03:25 PM

Quote:

Originally Posted by JeepEngineers

For KK there is a unique ABS/ESP/BTC calibration that is enabled in 4L0. It allows for greater wheel slip speeds than 2WD/4HI operation but is not disengaged. The BTC (Brake Traction Control) allows for torque to shift to a wheel with traction by appying brake pressure to the wheel that is slipping. This is very advantageous for off-roading and requires the ABS system to be working. Thanks for the question - but I can't speak for your TJ question.

Is the calibration also true for the KJ?