Hello,
I am slightly confused over the oh-so-many responses about leaving the vehicle in AUTO on dry roads. As I understand, the ATTESA system distributes power ONLY when slippage occurs. Understanding this (and correlating it with the manual), why can we not leave it in AUTO forever?...Some people say it's bad.
Also, some say that it's 100:0 on acceleration, some say 97:3, etc etc. What is the actual ratio in perfectly dry conditions?
Thanks
4WD Confusion
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nissandoms47
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Re: 4WD Confusion (vliou)
i dont see why you would want to leave it in auto all the time, there is no benifit.
Re: 4WD Confusion (nissandoms47)
I reside in Ontario, and here where I am, it's constantly around -15'c, and there's always some snow on the ground.
There is A TON of benefit with AUTO. Driving along dry roads, occassional patch of ice, snow, and AUTO saves your life. The QX4 4WD version has a horrible front to rear weight ratio. With 4 snow tires, in 2wd, I fishtail. I sometimes can't even get out of heavily snowed in flat and level roads. Ontario Snow is terrible...freezing rain doesn't help.
AUTO is the difference between life and death here all the time. I constantly laugh at 2wd sedans who can't make it up small includes etc etc.
I would HATE to lose control of my QX in 2wd. It's fun to drift, but not on highways...
There is A TON of benefit with AUTO. Driving along dry roads, occassional patch of ice, snow, and AUTO saves your life. The QX4 4WD version has a horrible front to rear weight ratio. With 4 snow tires, in 2wd, I fishtail. I sometimes can't even get out of heavily snowed in flat and level roads. Ontario Snow is terrible...freezing rain doesn't help.
AUTO is the difference between life and death here all the time. I constantly laugh at 2wd sedans who can't make it up small includes etc etc.
I would HATE to lose control of my QX in 2wd. It's fun to drift, but not on highways...
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nissandoms47
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Re: 4WD Confusion (vliou)
actually the r50s weight is almost 50/50 front/rear. but i dont think there would be any harm in leaving it in auto unless you squeel tires on dry pavement and then front wheels kick in and cause binding or something. i would just make sure the auto is actually engaging on a slick surface.
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KoukiS14
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Re: 4WD Confusion (nissandoms47)
I agree with vliou -- when I bought my QX4, I read the manual front to back, then back to front. . 'cause. . I do that. .
Anyways, it did mention, and I've been able to corroborate this with other sources, that it's 100/0 under normal driving, and only engages during slippage. It's incredibly nice to be able to leave it in auto, as even though we've just received 17" of snow, there is a mix of snow / ice / dry pavement. If it was engaged at all, when I'm turning on dry pavement, you'd think it'd bind and complain as is the case when 4wd is locked.
Anyways, it did mention, and I've been able to corroborate this with other sources, that it's 100/0 under normal driving, and only engages during slippage. It's incredibly nice to be able to leave it in auto, as even though we've just received 17" of snow, there is a mix of snow / ice / dry pavement. If it was engaged at all, when I'm turning on dry pavement, you'd think it'd bind and complain as is the case when 4wd is locked.
Re: 4WD Confusion (KoukiS14)
=) Thx for your reply...love that manual!
Weight distribution for 2wd is better than 4wd models.54/46, 2wd is 2 over and 2 under...meaning 52/48.
I'm pretty sure anyways... I know for sure 4wd is worse than 2wd to breathe
Weight distribution for 2wd is better than 4wd models.54/46, 2wd is 2 over and 2 under...meaning 52/48.
I'm pretty sure anyways... I know for sure 4wd is worse than 2wd to breathe
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KoukiS14
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Re: 4WD Confusion (vliou)
The weight dist is something I never considered, but thanks for posting itvliou wrote:=) Thx for your reply...love that manual!
Weight distribution for 2wd is better than 4wd models.54/46, 2wd is 2 over and 2 under...meaning 52/48.
I'm pretty sure anyways... I know for sure 4wd is worse than 2wd to breathe
Check this -- it's the information label from my driver's side visor.
Mentions auto can be used for driving paved or slippery roads. I can argue that it doesn't mention they can be dry, but it alludes to it, considering the "OR slippery" part of it.
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KoukiS14
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Re: 4WD Confusion (KoukiS14)
In regards to the All-Mode™ on 2004 models:
http://www1.shopping.com/xPF-N...e.com
The truck-based Pathfinder is Nissans oldest SUV. It offers SE and uplevel LE models, both with a 240-hp V6, automatic transmission, and a choice of rear-wheel drive or 4-wheel drive. SEs 4WD must be disengaged on dry pavement. The LE has Nissans All-Mode 4WD, which can be left engaged on dry pavement.
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In regards to the 98 QX4:
http://www.nissannews.com/site...shtml
The system should be left in the AUTO mode for normal daily operation, requiring no driver intervention. The AUTO mode is recommended for most driving conditions except for severe or extended off-road driving. In All-Mode 4WD the system automatically directs engine power to the axle that has the most traction. The torque split may infinitely vary from zero percent front/100 percent rear to 50 percent front/50 percent rear. When accelerating from a standstill, torque is distributed to the front wheels based on throttle opening, wheel slippage, and road speed. Once the QX4 is moving approximately six to 12 mph, all power is sent to the vehicle's rear wheels (unless slippage is detected).
http://www1.shopping.com/xPF-N...e.com
The truck-based Pathfinder is Nissans oldest SUV. It offers SE and uplevel LE models, both with a 240-hp V6, automatic transmission, and a choice of rear-wheel drive or 4-wheel drive. SEs 4WD must be disengaged on dry pavement. The LE has Nissans All-Mode 4WD, which can be left engaged on dry pavement.
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In regards to the 98 QX4:
http://www.nissannews.com/site...shtml
The system should be left in the AUTO mode for normal daily operation, requiring no driver intervention. The AUTO mode is recommended for most driving conditions except for severe or extended off-road driving. In All-Mode 4WD the system automatically directs engine power to the axle that has the most traction. The torque split may infinitely vary from zero percent front/100 percent rear to 50 percent front/50 percent rear. When accelerating from a standstill, torque is distributed to the front wheels based on throttle opening, wheel slippage, and road speed. Once the QX4 is moving approximately six to 12 mph, all power is sent to the vehicle's rear wheels (unless slippage is detected).