pudding

Okay, so, if I got the spelling right on that system, are there any differences with the Atessa - e AWD system and the others, or is that just the name. Is it one where the power is to the rear wheels until traction is lost, or a 40 - 60 split sorta thing? Thanks.

oOmikeyboy

iTrader: (3)

there are several variants of the system, ATTESA, ATTESA-ETS, ATTESA-ETS Pro, and ATTESA-ETS GT-r version.

there are slight differences, but instead of copy and pasting the whole page, heres the wiki on it:
http://en.wikipedia.org/wiki/ATTESA

JLai

Its ATTESA

pudding

Read that before, but didnt fully understand it. Which one is in the x?

nogoodname

iTrader: (3)

* New ATTESA E-TS all-wheel-drive (AWD) system
* New 7-speed automatic transmission
* Standard Scratch Shield paint
* Available in September 2008

pudding

I know that, but are there any differences in the Attesa system than will others, like the Audi Quattro is a 40-60 split with power, how does the Atessa work?

nogoodname

iTrader: (3)

"The ATTESA-ETS layout is more advanced than the ATTESA system, and uses a 16bit microprocessor that monitors the cars movements at 100 times per second to sense traction loss by measuring the speed of each wheel via the ABS sensors. A three axis G-Sensor mounted underneath the center console feed lateral and longitudinal inputs into an ECU, which controls both the ATTESA-ETS 4WD system and the ABS system. The ECU can then direct up to and including 50% of the power to the front wheels. When slip is detected on one of the rear wheels (rear wheels turn 5% or more than the front wheels), the system directs torque to the front wheels which run a viscous LSD. Rather than locking the AWD in all the time or having a system that is "all or nothing", the ATTESA-ETS system can apportion different ratios of torque to the front wheels as it sees fit. This provides the driver with an AWD vehicle that performs like a rear wheel drive vehicle in perfect conditions and can recover control when conditions aren't as perfect. The advantage to a more traditional ATTESA (Viscous LSD) system is response in hundredths of a second."

pudding

Thanks. So it is essentially a rear wheel drive vehicle that engages the front wheels when traction is lost?

nogoodname

iTrader: (3)

yea, I'm assuming that. it makes sense because all the G's are rear wheel driven cars.

pudding

Thanks.

wireboltman

It's been my understanding for some time that the system starts out with a 50/50 split, front to back.

At about 6-8 mph, if it senses no slippage, it reverts to 100% RWD and remains there until slippage is sensed.

nogoodname

iTrader: (3)

^^ you could be right, i got that info from WiKi

wireboltman

In the last 4 yrs, we've had this discussion on my FX forum more times than I can count-

nogoodname

iTrader: (3)

^^ Lol

wireboltman

The AWD button on the 2003 models of the G35X and FX will keep a 50/50 split till 19mph. (Differentials locked)
After 19 mph, it'll revert to a RWD drive mode until slippage is sensed, even with the switch still turned on.


The AWD switch was renamed the "Snow Mode" button on the 2004 and through present.
It does the same, but has increased throttle sensitivity, meaning it will actually take control of the throttle.
Doesn't matter how far you push it down---it only allows so much throttle to be used.

I don't care for it at all.
I've driven on ice and snow all my life and don't appreciate the "help," which can be counterproductive in a heavy snow situation.
The vehicle will just bog right down.