borrego 4x4 system question - Kia Forum

 
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post #1 of 8 (permalink) Old 02-05-2011, 08:30 PM Thread Starter
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borrego 4x4 system question

Just picked up a borrego v6 EX with 10k on the clock to replace my aging sportage... So far, great vehicle!

The one concern I've had so far is the 4x4 system. Not sure if its a concern or just learning how it operates. In the auto mode, it seems to behave as expected. Starting out on ice will cause it to spin a little bit, until it makes a slight crunching sound and the front wheels engage. The part that doesn't seem right is when the dial is set to 4 -hi. It behaves EXACTLY the same. It is most certainly 2wd for a little bit until wheel slip is detected... Is this how its supposed to operate?

I'm coming from my sportage with a transfer case shift on the floor. 4-hi meant 4 high, no sensors involved! I also don't get the typical wheel hop that you normally associate with a locked center diff on the borrego.


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post #2 of 8 (permalink) Old 02-07-2011, 12:47 PM
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This is most likely the ESC (Electronic Stability Control). Think of it as Traction Control on steroids. When the wheels begin to slip, the power is cut down. Unless the Borrego jumps and doesn't want to go, you should be fine. Try turning off the ESC and see the difference. If it still does it then, you may want to take it to a dealer. With the ESC disabled, it will allow the wheels to spin freely and will not prevent you from spinning out.

Hope that helps
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post #3 of 8 (permalink) Old 07-05-2011, 01:48 PM
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well i know exactly what you are feeling...in 4hi the center diff is locked but when you brake to a stop if you ABS kicks in then you get alot of diff binding in the center diff. so when you brake and get alot of ABS pulsing the center diff opens momentarly to allow the wheels to brake properly...the down side is when you get back on the trottle you get a jolt but that the diff working out the binding. no worries its normal...the reason you didnt feel it in you old sportage is either it didnt have ABS or its only functioned in 2wd.
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post #4 of 8 (permalink) Old 07-05-2011, 06:18 PM
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What you are describing sounds normal for the Borrego. The 4WD system works, but isn't the best system in world. The problem is, the Borregos in the US were only offered with Auto 4WD(TOD). In other countries they were available with selectable 4WD(EST) also, which had 2Hi, 4Hi, and 4Lo. The EST is a much better system IMHO.
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post #5 of 8 (permalink) Old 07-06-2011, 12:01 PM
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TOD = Torque on demand? What's EST?

The Borrego has only the Center differential that can be locked or transfer the torque from the back to the front. But both the front and back differentials are not limited slip. So if one wheel does not have traction, then that wheel can take all the torque and spin away, while the one with traction receives no torque, and do nothing. However in the Toyota system, if Electronic Stability Control is on, then ESC would apply the brake on the wheel that has no traction, thus cause the torque to go to the wheel that has traction.

But there are reports here that people have their one wheel spins and the vehicle goes no where. I wonder if in those cases, the ESC was on or off? I drove my Borrego hundreds of miles on ice and snow this past winter with ECS on all the time without much problem.
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post #6 of 8 (permalink) Old 07-07-2011, 08:56 PM Thread Starter
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Originally Posted by seren View Post
But there are reports here that people have their one wheel spins and the vehicle goes no where. I wonder if in those cases, the ESC was on or off? I drove my Borrego hundreds of miles on ice and snow this past winter with ECS on all the time without much problem.
I'm relatively sure I was in that situation. I was almost stuck in about 4-6 inches of snow with a little ice under it. I had to back up a couple feet in my own trail to move forward at all. It felt like only one back tire was spinning. The problem is that the center diff won't lock at all, even in the 4x4 mode. (a locked diff should cause the tires to skip/jump when turning sharp on pavement. At least in my borrego, there is zero difference between auto and 4x4.)

Can anyone else confirm that the center diff actually does lock up manually? Put it in 4x4 and make a gentle turn on pavement, you should be able to tell immediately if it is or not.

I think i'm going to dig into the specs for the torsen center diff and see if I can figure out the pinouts for it. I"m sure there is a single +12v line on it that tells it to lock up. Out of my '99 sportage, subaru wrx, and borrego, the borrego is the one that I won't drive on snow/ice. The other two vehicles are vastly more capable!

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post #7 of 8 (permalink) Old 08-10-2011, 02:27 AM
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Anyone find out anything more about this. This last weekend I was out at the lake and got stuck in the sand, thinking that it wasnt going to be a problem I "locked" it into 4L thinking that I would just pull myself right out. Needless to say I was a little puzzled when I just saw that two wheels spinning. Is there anything that can be done, or is my 4x4 suck driving on the sand less than 2 inches deep????????
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post #8 of 8 (permalink) Old 04-12-2014, 04:55 AM
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kia mohave 4*4 system explanation

in fact the kia mohave is not a real SUV like toyota land cruiser.
it has no LSD(Limited Slip Differential) on it's axels do if one wheel of any axel loose traction , all the power will go to the wheel that have no traction. it can cause stuck on off-road situation. kia Mohave has no Diff-lock for axels.
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