Quadra Trac 2 operation info needed - Jeep Garage - Jeep Forum

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Old 04-05-2014, 09:31 AM
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Quadra Trac 2 operation info needed

Hi to all, I may have originally placed this in the wrong forum, sorry about that
My 2014 Grand Cherokee has QT2. I opted for the Limited because I wanted an all wheel drive system with a transfer case. The Jeep still has open differentials, I believe, and I was wondering if using low range did anything to limit wheel spin, in addition to more pulling power.The manual says something about it locks the front and rear shafts together, if that helps. I understand that the QT2 has a brake based system also designed to control wheel slippage, but I was never a big fan of how they operate. The manual states that this function works even with ESC off, which is usually what I do in moderate to deep snow. Is that advisable? Can anyone explain exactly how the QT2 systems work together. I also would like to know what the feasibility of adding a limited slip rear differential is. I remember when you just swapped it out, but now with all the sophisticated electronics(they actually call it Electronic Limited Slip Diff),is it possible to do once the vehicle was built without it. Thanks for any info.

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Old 04-05-2014, 02:44 PM
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Re: Quadra Trac 2 operation info needed

No you cannot add the limited slip unless you have very deep pockets.
Low range does nothing to limit wheel spin, that is always handled by the brake traction control. It will help in deep snow, sand, rocks etc. Because it eliminates the clutch in the transfer case and does physically lock the front and rear axles together. It is a good idea to do that when you are in hard slow terrain to prevent the transfer case from burning up.
For the record you are not shutting off your esp, that cannot be disabled unless you are in 4 low. You are shutting off the traction control, which essentially means when it detects wheel spin it won't cut throttle.
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Old 04-05-2014, 03:40 PM
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Re: Quadra Trac 2 operation info needed

Found this educational:
Jeep - 4x4 Basics - How Jeep 4x4 Systems Work - Quadra-Trac II - 4WD SUVs
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