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AusSki Profile
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Date Registered: 03-2012
TOTAL POSTS: 11
Reply | QUOTE
Diesel Auto change points


Hi
I am not happy with the diesel auto change points.
Seems to hold in higher gears.
Slowing for a roundabout the revs drop to about 1200 and when I put my foot down nothing happens. I know there is turbo lag but if the auto changed down quicker it may get up and go better. A bit like sports mode on some autos.

Does anyone know if it is possible to change the auto gear change patterns?



2/Oct/2013, 1:00 pm Link to this post Send Email PM   Send Private Message Blog
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re:


Have you tried driving in manual mode?

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2/Oct/2013, 1:43 pm Link to this post Send Private Message MSN Blog
 
Exywarrior Profile
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Date Registered: 10-2011
Location: Darwin, NT
TOTAL POSTS: 325
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Re:


The gear change points are set by the OEM (Renault) and can't be changed.
I incidentally had the same problem when I first got this car until I got used to how to fix it.
You can't change the gear change points, but what can be changed is how you need to drive the diesel. It ain't no 'tractor engine' - you need to use a little bit of boot. And this is what highly experienced Nissan mechanics told me. Getting it to change down and use a few revs is also good (apparently) for keeping the turbo revving which in turn is better for the engine.
To get the car to depart the roundabout (or turn) in the right gear, on reaching the apex I gradually add accelerator to a point beyond that which you think you'd normally do and I find she will change down and nicely depart the roundabout in 2nd gear.
You have to remember that this engine and gearbox were designed to drive on European roads...so you need to drive more or less like a European. It isn't designed to potter around at 1500RPM. It's designed for 2000 plus. Use the boot a little and you'll get used to it! And the gearbox will adapt to you too. It works.

...and incidentally, driving it with a little bit of boot on the turns has actually marginally improved the fuel economy too - probably linked to the turbo working better.

Last edited by Exywarrior, 3/Oct/2013, 9:14 am


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Mark T
2011 Series 4 T31 TL Auto - Twilight, factory towbar, factory mats, tinting, Cooper CS5s, cathodic protection, paint protection, yada yada...and no Provent
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3/Oct/2013, 9:03 am Link to this post Send Email PM   Send Private Message Blog
 
Brotherontherun Profile
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Date Registered: 07-2013
TOTAL POSTS: 34
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Re:




I can back Mark's claim up with the fuel economy going down the harder you push it.

Mark, I wasn't aware of the adaptive driving as I've given up driving it like miss daisy, how long did it take for the gearbox to start learning?

Mine once warmed up will see anywhere between 2500 to 4500 daily.

Cheers
B

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Brotherontherun (X-3226)

2013 TL Snowstorm White, Auto
Now with 6.5 inch splits, 6.5 Co-axils, Amp & 10 Inch Sub
9/Oct/2013, 6:16 pm Link to this post Send Email PM   Send Private Message Blog
 
Exywarrior Profile
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Date Registered: 10-2011
Location: Darwin, NT
TOTAL POSTS: 325
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Re:


I don't actually know about any timeline mate - all I know is that it's there and it exists in most modern electronic automatics. The one in my last car (Toyota Avensis GLX) was quite remarkable although that gearbox was nowhere near as smooth as the one in the Diesel X-Trail.

I've certainly found though that she seems to pick better gears for the circumstances when driven just a little harder than you might another petrol car.

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Mark T
2011 Series 4 T31 TL Auto - Twilight, factory towbar, factory mats, tinting, Cooper CS5s, cathodic protection, paint protection, yada yada...and no Provent
X-2099
9/Oct/2013, 10:56 pm Link to this post Send Email PM   Send Private Message Blog
 


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