D4 Cruise Control

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Originally Posted by Graeme

It is now very useful in quite hilly terrain - permagrin for CC at last!

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Graeme, good to see there is something available to sort this out! CC has been irritating me endlessly with the way it currently works - if I increase the CC speed by 6Kph as I start to go up a hill, I get to maintain the desired speed. Naturally I have to decrease it to the previous setting as we get to the crest. What a pain!

Does any one else find the 2 kph increments an inconvenience? It seems that you're travelling that little bit too fast or to slow when following another vehicle with cc set. Is there any setting or fix to allow 1 kph increments to CC setting?

I ageee, its a pain as it seems that other brands of vehicles can maintain speed quite well. Next time I'm on the freeway (not soon AFAIK) I'll be trying sport mode and comand shift to see if CC maintains speed better. I don't mind dropping a few kph if no vehicle is behind but don't particularly like playing leap-frog.

I haven't had any issues with my D4 cc but at my last service they did tell me there was no software upgrades, mine was up to date.

I'm gonna sound like my old man here but I did an Econ run on one of my trips back from Syd.. cc set about 4kph higher on speed limits (I've found I'm being constantly harassed at the speed limit, I assumed it read slow).. On the up hills I let it do it's thing, on the downs I knocked it into neutral & coasted (yes I know it's not best practice).. At times it would easily coast above 120, slow down on the next hill then press reset cc.

I noticed a huge difference on the inst fuel down hill (of course) with a marginal yet noticeable difference in fuel consumption.

All in all I'm happy with the cc, id like the option to auto change down on down hills but also to be able to turn it off. Or I'll just do it manually anyway.

On the coasting with cc on I did find it annoying as it coasted "too well", knowing there were speed traps on the down hills I had to dab the brakes..

Still the best car I've owned to date..

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Originally Posted by Graeme

Next time I'm on the freeway (not soon AFAIK) I'll be trying sport mode and comand shift to see if CC maintains speed better.

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I'll be heading to the South Coast this week so I might give your suggestions a try. I'm sure I'll still need the s/w update.

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Originally Posted by Robocop

I'm gonna sound like my old man here but I did an Econ run on one of my trips back from Syd..

..Still the best car I've owned to date..

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I wouldn't worry about the old man bit robocop - I think it's a universal tendency. Just last week I embarked on the same mission, heading down the mountain to nth Ryde I averaged 6.2, on the way back 7.6 - 200km round trip, my best numbers ever! Very judicious with the accelerator and brake and extensive use of cc.

....and yep, definitely agree - best car I ever had too.

This is the worst cruise control I've ever had.

I'm sure there could be worse out there, but 4 brands prior have all been better at maintaining speed on up hills and all had 1 kph increments.

The downhill thing is probably a lot to do with the 2.5 ton, but as others have noted, the transmission could be utilised somewhat.

Health check service coming, so will also ask for this to be checked.

I'm not understanding why it needs to be in increments of 1kph? All our speed limits are even numbers.... But I am that OCD type that can't have the speedo on an odd number.. I would have preferred a trip computer function like the time of arrival like I had on my SS..

My Golf has a 1kph increments and holds speed up and down hill - it even changes gears (DSG) down to keep the speed at the set level.

My D4 will ALWAYS go 4kph over the set speed on resume, and if I tap the speed up, it will go 2kph over the speed then settle back down. up/down hills it mostly OK with it not dropping more than 2kph either way. Should be faster to react to speed fluctuations IMO.

And I'd like 1kph increments on it as it's a pain to get the speed correct. On the GPS and display signs when on the Hume in Victoria, my car reads 105 at a 'true' 100. I like to be at the speed limit not 1kph up/down. Being a little anal about it, I find it can take 3 or 4 goes to get the cruise on the odd number.

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Originally Posted by outasight

The downhill thing is probably a lot to do with the 2.5 ton, but as others have noted, the transmission could be utilised somewhat.

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The gbox will drop to 5th if in auto and the brakes are used on overrun, at freeway speeds anyway. I often set a new CC speed rather than resume to avoid having to be travelling at exactly the old CC speed and to have been doing so for at least a few seconds in order to prevent either significant acceleration or loss of speed.

My CCF has been adjusted so that the speedo is a maximum of 1 kph fast at 110 kph. I'm much happier to know that I'm travelling at the speed limit than continually having to verify with the GPS that I'm not really doing another 5 kph, especially when speed increases downhill where I will apply the brakes if speed is going to exceed 7 kph over the limit.

My ETA is shown on the el-cheapo Chinese GPS system. Its also one of the figures I can read without having to change to reading glasses.

Are you certain Graeme? I've only 2 weeks ago on the HWY around Suttons Forrest had the cc set on 112, on one of the downhills I let it do it's thing, it coasted away not changing down or applying the brakes to 128kph. I'd rather it didn't apply the brakes anyway but I now know to keep an eye out.

When the driver applies the brakes, not CC.