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Discussion Starter · #1 ·
Well I was driving on the toll road in lovely Irvine, SoCal, today and had the cruise set to about 70mph to the top of the hill. The downgrade can become quite steep and when set in 6th gear (GT tranny) the car naturally starts to accelerate. Im used to the computer "lifting" off the throttle to attempt to slow itself down (it would be like me lifting my foot completely off the accelerator) but today it felt like the brakes were being applied automatically to slow the speed to the set 70mph. My question I guess is was it the brakes I was feeling?
 

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Discussion Starter · #3 ·
Yeah I thought it might be downshifting too but it seemed so abrupt. Have you noticed sometimes that it clunks into gear on a downshift when traveling downhill? Like you're coasting for a little bit then decide to step on the accelerator and it "clunks" into a gear? Dont know how else to describe it really <IMG NAME="icon" SRC="http://www.vwvortex.com/zeroforum_graphics/screwy.gif" BORDER="0">
 

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Re: (Tekk)

Yep. If you get the dealer to "re-train" or better known as the "adaptation process" for the transmission, it will greatly improve the clunking and some hesitiation between shifts that you are feeling. Rick
 

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Re: (Tekk)

I have wondered the same thing. The car seems to do a really good job of staying at whatever speed you set it even going down hill. I have a MT so I know its ot downshifiting, but I cant say that I feel it applying the brakes either.
 

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Re: (minorthr)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>minorthr</b> »</i></TD></TR><TR><TD CLASS="quote">I have wondered the same thing. The car seems to do a really good job of staying at whatever speed you set it even going down hill. I have a MT so I know its ot downshifiting, but I cant say that I feel it applying the brakes either.</TD></TR></TABLE><br>Correct me if I'm wrong, but if it isn't downshifting, isn't the only option left to slow a car down using the brakes?
 

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Re: (NRM8573)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>NRM8573</b> »</i></TD></TR><TR><TD CLASS="quote">Correct me if I'm wrong, but if it isn't downshifting, isn't the only option left to slow a car down using the brakes?</TD></TR></TABLE><p>You would assume so and it very well could be. Like I said it just doesnt feel like its applying the brakes to me.
 

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the only way to find out is go to a really steep hill and see if it still holds that speed. if i remember (which i probably wont), i will try it on my way home from work.
 

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Re: (phuz)

The car does not use the brakes to slow during cruise. <p>I too have noticed the downshifting. I have also noticed that when you are downshifting through the GT off of the throttle, it really clunks hard, especially if you are coasting to a stop and downshifting to first. I usually let it downshift itslef, but I'm always worried about being caught in too high a gear.
 

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Discussion Starter · #10 ·
Re: (needsdecaf)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>needsdecaf</b> »</i></TD></TR><TR><TD CLASS="quote">The car does not use the brakes to slow during cruise. <p>I too have noticed the downshifting. I have also noticed that when you are downshifting through the GT off of the throttle, it really clunks hard, especially if you are coasting to a stop and downshifting to first. I usually let it downshift itslef, but I'm always worried about being caught in too high a gear. </TD></TR></TABLE><p>When I tried it again this afternoon I set the cruise to 70mph again and let it go down the hill in full auto mode, I believe I felt it downshift but when I switched to GT mode it said it was in 6th gear. The mph were not going more than 3mph OVER what I think was the original setting of 70. Who knows maybe the hill wasn't steep enough.<p>I haven't noticed a clunk of any sort when coasting in GT mode and downshifting. I could definitely see it happen from 2 - 1 though because that shift no matter the direction is a weird one. When Im running in advanced mode using GT, the upshift from 1 to 2 has a very noticeable flare...like it takes about 400-600 RPMs just to shift to second and it does it at about 5500-6000 RPMs. The shifts from 2-->3-->4 are amazingly crisp and quick. Almost as fast as I believe I could do it in a full manual. Plus it holds the gears till almost 6500 RPMs before it shifts. Its definitely a much quicker/higher shiftpoint once out of 1st gear. <p>I really like the performance of the GT tranny but it would be simply amazing if they could get that awesome shift I experience in the higher gears to work in the shift from 1 --> 2. Oh well such is life <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"><p>Oh and I'll have to bring that "adaptation" suggestion up to the dealer at my 15000 service. Hopefully they'll know what the hell Im talkin about. Anyone wanna recommend a dealership in Socal Pasadena area that is super nice and knowledgeable Im all ears.
 

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Re: (Tekk)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Tekk</b> »</i></TD></TR><TR><TD CLASS="quote"><p>I haven't noticed a clunk of any sort when coasting in GT mode and downshifting. I could definitely see it happen from 2 - 1 though because that shift no matter the direction is a weird one. When Im running in advanced mode using GT, the upshift from 1 to 2 has a very noticeable flare...like it takes about 400-600 RPMs just to shift to second and it does it at about 5500-6000 RPMs. The shifts from 2-->3-->4 are amazingly crisp and quick. Almost as fast as I believe I could do it in a full manual. Plus it holds the gears till almost 6500 RPMs before it shifts. Its definitely a much quicker/higher shiftpoint once out of 1st gear. <p>I really like the performance of the GT tranny but it would be simply amazing if they could get that awesome shift I experience in the higher gears to work in the shift from 1 --> 2. Oh well such is life <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"><p></TD></TR></TABLE><p>i noticed the few times that ive punched it a little in advanced that it revs pretty high in 1st, like ive got the throttle to the floor but i really dont. i need to try advanced more to see what the shifts are like and see if they are as smooth in mine as they are yours in advanced from 2-4. im trying to take it easy till at least 1500 miles is on the car so its hard to drive in advanced much cause it wants to rev past 4k so much.<p>i drive in sport mostly because of roads and break-in right now but i notice an extremely smooth shift point from 1-2 when the car is fully warmed up everytime i accelerate. its smooth as silk and im still amazed as how smooth it is, but the ones after that such as 2-3 rev higher and arent as smooth but its gotten better since i bought the car. <p>in fact its so smooth the car doesnt even puase for that split second when changing gears, i watch it all the time to say this. the speedometer needle doesnt pause not one bit, just keeps going up. but when it comes to 2-3+ theres a pause(more like 2 seconds it feels like) and just a hint of flare depending on how fast i accelerate.
 

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Re: Cruise control use brakes? (Tekk)

My experience when traveling, (there are no test hills in Texas!) with an 2005 V70R MT, is that the cruise control will just drop out, if the set speed is overrun via a steep downhill. <p>The same is true of uphill if the engine labors excessively.<p>Seems like proper behavior to me, no braking, it just closes the throttle in the case of downhill. <p>I suspect some cars with adaptive cruise, (Lexus MB, etc), may actually control braking. Volvo has no current product offering with adaptive cruise.
 
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