AUSTRALIAN X-TRAIL FORUM :: 4WD System & Transmission :: T31 Auto Transmission

AUSTRALIAN X-TRAIL FORUM :: 4WD System & Transmission :: T31 Auto Transmission - Failsafe mode ~ Runboard



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Australian X-Trail Forum 4WD System & Transmission
T31 Auto Transmission - Failsafe mode

Revhead Kev
X-TRAIL HOLIC

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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 2953
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T31 Auto Transmission - Failsafe mode

Hi all,

While researching something else, I found this little piece in the service manual about the failsafe mode of the T31 automatic transmission.

(of special note is the section marked in red)

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Kev X450(c)
2003 Titanium Ti Luxury Series 1

9/Aug/2009, 11:32 pm

cooch t31
X-TRAIL HOLIC

Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 1438
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Re: T31 Auto Transmission - Failsafe mode

I don't understand Kev.
Why would it have to go into failsafe when the car slows down, wierd.

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Tony X-891c
2008 T31 St
HERE is my X Trail

10/Aug/2009, 6:32 am

AkaZulu
X-TRAIL ENTHUSIAST

Date Registered: 07-2009
Location: Palmerston, NT
TOTAL POSTS: 161
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Re: T31 Auto Transmission - Failsafe mode

I think its designed to stop people riding the brake and accelerator at the same time in order to save the transmission loads. I've seen plenty of people drive autos with one foot on the brake pedal and the other on the accelerator pedal. Interesting however.

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X-1318 (c)
AkaZulu
2003 Ti-L T30, Polar White
Bling: Chrome factory Nudgebar, Spotties, Sunroof, Bonnet Protector, Towbar, X-Trail Brake Decal, HiTech Full Exhaust System, K&N Air filter, DVD/MP3/GPS/Bluetooth/TV/USB/iPod/Touchscreen TFT

10/Aug/2009, 2:12 pm

basshead
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Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2708
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Re: T31 Auto Transmission - Failsafe mode

Well that would explain T31 driver's experiences where they can't replicate the "fault", even on the same incline on a different day. I recommend all T31 to try this "reset" next time it happens to see if it does in fact reset.

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Rich. X-013(c)
'04 S2 ST Auto. Nudge_roofracks_tow_tints_Lightforce_GME_BFG_TBS_home-made-bashplate_50mm-spacer-lift
Click here to see >300MB of photos and videos All For His Glory.

10/Aug/2009, 8:48 pm

Revhead Kev
X-TRAIL HOLIC

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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 2953
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Re: T31 Auto Transmission - Failsafe mode

Hi Tony,

How many times have you either done yourself or seen someone have the wheels start spinning due to loss of traction and then have the brakes applied quickly to stop the vehicle from rolling backwards or sliding sideways ?

This could be a scenario which fits the example they give for the operation of failsafe mode.

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Kev X450(c)
2003 Titanium Ti Luxury Series 1

10/Aug/2009, 10:55 pm

cooch t31
X-TRAIL HOLIC

Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 1438
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Re: T31 Auto Transmission - Failsafe mode

Kev
You could be right there.
I can't see it being usefull for the car simply rolling backwards.
But I can see it being good for loss of traction around a corner maybe (ie. drifting) but there are already safety systems in place for that.

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Tony X-891c
2008 T31 St
HERE is my X Trail

11/Aug/2009, 6:32 am

Revhead Kev
X-TRAIL HOLIC

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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 2953
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Re: T31 Auto Transmission - Failsafe mode

Sorry Tony, I should have clarified my example by saying "when out 4WDing up a steepish loose incline".

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Kev X450(c)
2003 Titanium Ti Luxury Series 1

11/Aug/2009, 11:11 am

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