How to separate the 4WD LOW from the differential blocking - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 29 (permalink) Old 04-05-2010, 09:07 AM Thread Starter
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How to separate the 4WD LOW from the differential blocking

Hello, I'd like to hear about someone who knows how to separate the 4WD LOW from the differential blocking. Actually when you use the 4WD LOW is limited to slippery surfaces. In my country (Venezuela) we have very steep mountains with hard surface roads with a lot of curves where we cannot use the 4WD LOW because it blocks the front/rear differentials and it can damage the transmission system. I've seen many other cars like Toyota, Nissan, etc., where you can choose to block or not the differential when using 4WD LOW. So, Is this possible with the 2007 Commander with an extra accesory or programming?.

Thank you in advance for your help.
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post #2 of 29 (permalink) Old 04-05-2010, 09:13 AM
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I'm confused as to what you are trying to do. Are you trying to put the vehicle in 4 low but only have the power go to the rear wheels so you dont mess up the 4wd on the dry pavement? Or are you trying to lock the transfer case into low but still have split power going to the front and rear wheels like when its in full time 4wd.




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Last edited by 07JeepXK; 04-05-2010 at 09:23 AM.
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post #3 of 29 (permalink) Old 04-05-2010, 09:54 AM Thread Starter
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I want to use my commander with 4WD LOW with non slippery surface (pavement), without the risk of damaging the transmission.
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post #4 of 29 (permalink) Old 04-05-2010, 10:20 AM
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You can use 4-Lo on pavement, but you need to keep your speed under 25mph.



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post #5 of 29 (permalink) Old 04-05-2010, 12:34 PM
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Quote:
Originally Posted by josemoradiaz View Post
Hello, I'd like to hear about someone who knows how to separate the 4WD LOW from the differential blocking. Actually when you use the 4WD LOW is limited to slippery surfaces. In my country (Venezuela) we have very steep mountains with hard surface roads with a lot of curves where we cannot use the 4WD LOW because it blocks the front/rear differentials and it can damage the transmission system. I've seen many other cars like Toyota, Nissan, etc., where you can choose to block or not the differential when using 4WD LOW. So, Is this possible with the 2007 Commander with an extra accesory or programming?.

Thank you in advance for your help.
4WD low is not limited for use only on slippery surfaces. Which 4WD system do you have on your Commander ?

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post #6 of 29 (permalink) Old 04-05-2010, 05:28 PM
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Quote:
Originally Posted by a49erFan View Post
You can use 4-Lo on pavement, but you need to keep your speed under 25mph.
I wouldnt recommend using 4 low on dry pavement for any prolonged period of time.

Regardless of what terrain you are on you need to keep your speed under 25 while in 4 low.




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post #7 of 29 (permalink) Old 04-05-2010, 09:39 PM
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I think he wants the low range without the use of the front diff being engaged.

We used to do it all the time on my old Dodge Power Wagon. I could roast my 38's on dry pavement with just my little 318.
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post #8 of 29 (permalink) Old 04-06-2010, 02:52 AM
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I think what he is trying to say that he wants to use the 4 LOW without the transfer case gets locked to be able to turn sharply on hard surface.

I think this is possible,, but someone need to dig into it and trace the signal the triggers the transfer case lock and put a manual switch in it.
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post #9 of 29 (permalink) Old 04-06-2010, 01:36 PM Thread Starter
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Yeah Ahmed, THAT'S EXACTLY what I want, and for those who say that you can use the 4LOW on hard surface CHECK your OWNER'S MANUAL!!,

Ahmed do you know any accesory which can help me to achive this? My commander has QUADRA-DRIVE II, and is not a problem of speed ( I know the limit is 25, the problem is about turning! it has to be without the diff blocking). I want to climb or descend step mountains with pavement and sharp curves.

Thank you all for your help

Last edited by josemoradiaz; 04-06-2010 at 01:43 PM. Reason: Something Missing
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post #10 of 29 (permalink) Old 04-06-2010, 01:43 PM
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Quote:
Originally Posted by josemoradiaz View Post
Yeah Ahmed, THAT'S EXACTLY what I want, and for those who say that you can use the 4LOW on hard surface CHECK your OWNER'S MANUAL!!,

Ahmed do you know any accesory which can help me to achive this? My commander has QUADRA-DRIVE II, and is not a problem of speed ( I know the limit is 25, the problem is about turning! it has to have the front/rear diff disangage)

Thank you all for your help
4low is typically used for rock crawling. I don't know what kind of rocks you are used to but the ones I am familiar with are damn hard. By the way, if you have QDII you shouldn't have any problem doing anything.

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Interior: Dark Slate/Light Graystone with Saddle Brown Leather Seats
Quadra-Drive II, NAV, DVD, Trailer Tow Group IV, Off-Road Group II, Remote Start, UConnect, Rear Backup Camera, Chrome Wheels,
Magnaflow cat-back exhaust, Daytime Running Lights enabled, 2" Rough Country Lift with 265/70R17 Goodyear Wrangler AT/S

Last edited by jeep5253; 04-06-2010 at 07:16 PM.
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