Why Does AWD Shut Off After 19+ MPH? - Nissan Murano Forum
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post #1 of 10 Old 04-25-2004, 11:01 AM Thread Starter
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Why Does AWD Shut Off After 19+ MPH?

That is my understanding... is that correct?

If so, that makes no sence to me what so ever.
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post #2 of 10 Old 04-25-2004, 11:32 AM
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Sicne all wheels are traveling at the same rate of speed, when you take a turn, the front wheel(s will want to turn faster. This isn't good for the AWD system. Sure the wheels will slip a bit but it's still not good.

Even worst in a true 4X system such as my 88 Ford Ranger. Okay going straight or in lose sand/gravel roads.

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post #3 of 10 Old 04-25-2004, 11:41 AM Thread Starter
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Thanks for the reply.

Im just thinking of times in the snow, where traffic was still moving at a good 25MPH, and it was hairy.

Now I will have an AWD truck, that will shut down to 2wd? Just doesnt make sence to me.
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post #4 of 10 Old 04-25-2004, 12:15 PM
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The AWD drive engages whenever there is wheel slippage regardless of speed. The AWD button locks in the AWD below 19 mph to be used when necessary to get moving in a difficult situation.
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post #5 of 10 Old 04-25-2004, 12:20 PM
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It's always 2-WD in my opinion. i.e. only 2 wheels can have traction on a AWD system without lockers. Read if say the passengers side wheels are on ice, they will spin. The drivers wheels are on dry pavement you will go nowhere. Even my Jeep GC (pre 96) AWD would get stuck this way.

Power will still go between the front and the back with the lock turned off but the system will adjust the amount.

With the lock on it will be 50/50.

There has been a lot of discussion about this on this forum as well as others that really get into the system.

This is just a brief re-cap from my understandings.

2003 Murano SL AWD, Sheer Silver/Cafe latte. Leather Pkg/Premium Pkg/Sunroof/Dynamic Ctrl/Nav/X-Pel Rebuilt alternator
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post #6 of 10 Old 04-25-2004, 12:24 PM Thread Starter
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Quote:
Originally posted by HuskyFan
The AWD drive engages whenever there is wheel slippage regardless of speed.
So driving and hitting snow or ice at 25+MPH, will still kick the AWD system in?

Thats what i needed to hear...
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post #7 of 10 Old 04-25-2004, 12:41 PM
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No it will not kick in..... it's already in.

The AWD is always working. power may be 99% front 1% rear.
Ice (at any speed) AWD may choose 50/50 or 60/40, etc but it's always changing and controlled by the AWD computer.

Locked its 50/50 period up to 19MPH. Heck if the car knew you would not turn, you can stay locked 50/50 up to 119MPH.

2003 Murano SL AWD, Sheer Silver/Cafe latte. Leather Pkg/Premium Pkg/Sunroof/Dynamic Ctrl/Nav/X-Pel Rebuilt alternator
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post #8 of 10 Old 04-25-2004, 12:59 PM
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Chris,
These threads should shed some more light on it if you are still interested:
AWD #1

AWD #2

AWD #3

<B>2004 Mazda RX-8</B> Grand Touring Package and Navigation
Previous Car: <b>2003 Sunlight Copper Nissan Murano SL</b> NAV, 10000K HIDs, OEM Pushbar, LED interior lights
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post #9 of 10 Old 04-25-2004, 01:09 PM Thread Starter
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Thanks fellas... i knew i was missing something!
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post #10 of 10 Old 04-25-2004, 01:16 PM
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forgetaboutit!

This is a great place where you can ask anything! I think you'll find that everyone here is extremely helpful. It's one of the better forums out there I think!

<B>2004 Mazda RX-8</B> Grand Touring Package and Navigation
Previous Car: <b>2003 Sunlight Copper Nissan Murano SL</b> NAV, 10000K HIDs, OEM Pushbar, LED interior lights
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