What type of 4x4 is Auto mode? - Nissan Armada Forum: Armada & Infiniti QX56 Forums
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post #1 of 53 Old 01-12-2010, 07:20 AM Thread Starter
polz
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What type of 4x4 is Auto mode?

Very interesting reading on the different types of 4x4 modes:
4WD and AWD systems explained
What is the difference between Full time Four Wheel Drive (4WD) All Wheel Drive (AWD) and automatic All Wheel Drive (auto AWD)?

So after reading those, I'm wondering: is our Auto mode a full-time 4WD or an automatic AWD?

Paul

07 Silver Armada LE 4x4
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post #2 of 53 Old 01-12-2010, 07:51 AM
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The many unofficial tests I've done tells me it is full time...IDK for sure though.

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post #3 of 53 Old 01-12-2010, 09:20 AM
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Actually from what i know our system is not 4wd its 4x4 big difference

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post #4 of 53 Old 01-12-2010, 10:00 AM
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I would think Automatic AWD since only the rear is active until it slips, and when that happens, the front axle is activated also.


06 SE 4WD Red Brawn, Leather, Tow Package, 2* timing, Borla dual exhaust, Injen cai, 4300k hid, Hyper Grounding Wire, Bilstein 5100s, PRG Mini Lift, Fumoto Oil Drain Valve, Second row bench changed to captains chairs and Console,Hunter Bull Bar, Nitto Terra Grappler 325/60/18.

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post #5 of 53 Old 01-12-2010, 11:25 AM
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Its winter in Chicago so I have been keeping it on auto. The icon on the dash shows power to all four wheels. I was assuming that the vehicle is doing this cause the road conditions and the temp outside. I have yet to see it switch to 2wd automatically. I would expect it to in the summer. I do switch to 2wd on the cleared roadways like the expressway. I click it to auto on the city blocks and parking over snow.

My concern is switching it manually while driving. Does this cause harm to the trans?

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post #6 of 53 Old 01-12-2010, 11:34 AM
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Quote:
Originally Posted by Popsqually View Post
My concern is switching it manually while driving. Does this cause harm to the trans?
I don't think it does anything to tranmission, I have done it a few times from two rear to auto but not in 4low...I Think thats how its supposed to work switching on the fly...

Trevor
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post #7 of 53 Old 01-12-2010, 11:50 AM
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From owners manual:

With the switch set to the AUTO position,
distribution of torque to the front and rear
wheels changes automatically, depending
on road conditions encountered [ratio; 0 :
100 (2WD) ! 50 : 50 (4WD)]. This results
in improved driving stability



CAUTION
c Never shift the 4WD shift switch between
4LO and 4H while driving.
c The 4H position provides greater traction.
Avoid excessive speed, as it will
cause increased fuel consumption and
higher oil temperatures, and could
damage drivetrain components.
Speeds over 62.5 MPH (100 km/h) in 4H
is not recommended.
c The 4LO position provides maximum
power and traction. Avoid raising vehicle
speed excessively, as the maximum
speed is approximately 31 MPH
(50 km/h).
c When driving straight, shift the 4WD
shift switch to the 2WD, AUTO or 4H
position. Do not move the 4WD shift
switch when making a turn or reversing.
c Do not shift the 4WD shift switch (between
2WD, AUTO and 4H) while driving
on steep downhill grades. Use the engine
brake and low automatic transmission
gears (D1 or D2) for engine


06 SE 4WD Red Brawn, Leather, Tow Package, 2* timing, Borla dual exhaust, Injen cai, 4300k hid, Hyper Grounding Wire, Bilstein 5100s, PRG Mini Lift, Fumoto Oil Drain Valve, Second row bench changed to captains chairs and Console,Hunter Bull Bar, Nitto Terra Grappler 325/60/18.
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post #8 of 53 Old 01-12-2010, 12:04 PM
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Our Auto Mode is the "Automatic AWD", it's identical to the AWD Murano except the Murano is FWD when in 2WD mode and the Rear wheels lock in when needed.

Also, FWIW, our 4WD system is derived frome the original Skyline GTR.

- Bob
2005 Armada LE 4x4
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post #9 of 53 Old 01-12-2010, 10:06 PM
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Auto Mode

Pretty good idea actually, definitely uses less gas than riding around in conventional 4wd.

Thundertracks
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post #10 of 53 Old 01-13-2010, 01:18 AM
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Thanks guys.

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