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June 02, 2016, 05:09:50 PM

PioneerSSM

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D or DS mode
« on: June 02, 2016, 05:09:50 PM »
Hi all
Simple querie regarding the gear mode D & DS & M on my E70 (2010) 3.0 xdrive. There's an abundance of information on the web regarding this, little or nothing in the manual, resulting in more confusion than the brexit! should I stay in D or use only DS😁
Am I right in saying that the only actual difference in selecting DS is the gears seem to hold a little longer, and the revs immediately increase upon selection.
I've read elsewhere that the other changes in performance are increased throttle sensitivity, suspension stiffens & steering weight increases.
I've also read that the mpg actually increases.
My own opinion is that in any of the DS modes either auto or manual shift, handling becomes much improved, and it's a much more satisfying drive.
Now I don't know if it's physiological or indeed physical. Either way I know what I enjoy😎
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June 02, 2016, 07:03:47 PM
Reply #1

X5Sport

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Re: D or DS mode
« Reply #1 on: June 02, 2016, 07:03:47 PM »
The differences are pretty much as you have suggested, although the suspension change only occurs on cars fitted with active suspension.

Throttle response changes and the gears are held until well up towards the red line.  Manual of course sets it to what you choose though it will change down for you if you forget when approaching a junction for example.

I have never noticed any improvement in mpg on any of mine when running in Sport so it's probably marginal, though perfectly possible.

The only thing I find 'M' useful for is to try to force a regen, and it's normally successful.  DS certainly makes them more lively  :D
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June 02, 2016, 07:58:40 PM
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PioneerSSM

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Re: D or DS mode
« Reply #2 on: June 02, 2016, 07:58:40 PM »
Thanks for the confirmation. 👍
Regarding the regen, I've never needed to get the engine to achieve sufficient heat to carry out a regen. Now this strange, my past 3 deisels (not BMW) have all required this mind. Must be that my driving style might have changed? Whatever it is I'll keep it up👍

Anyone else have any experience of never having to force a regen, I'd be interested to hear about.

Many thanks

Steve
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June 02, 2016, 09:20:38 PM
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X5Sport

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Re: D or DS mode
« Reply #3 on: June 02, 2016, 09:20:38 PM »
The only reason that I need to 'force' it is that tother half does a 3.5-mile nursery run in the colder weather, which doesn't give the engine or DPF a chance to get hot enough.  I just keep the car at around 2,000 rpm by using the right gear when travelling up to my RAF Reserves unit twice a week and then it works every time.

I now swap cars for a week once a month as my daily commute is 30-miles and there is usually a regen at some point during the week with no special 'manipulation' of the gears/engine revs.
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June 03, 2016, 09:12:30 AM
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PioneerSSM

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Re: D or DS mode
« Reply #4 on: June 03, 2016, 09:12:30 AM »
Regarding the regen, i've never really noticed it happening.
I would guess that the characteristics would be the same as most oil burners fitted with DPF technology I.E.
cooling fans running,
Increased idle speed
A slight increase in fuel consumption
A hot, acrid smell from the exhaust.
Engine note change.

I've never experienced any of these though, and as such, on my other oil burners I only ever got a warning light, and it was quickly rectified with a couple of miles at a higher rev.

I often only travel a 6 mile EW commute sometimes 4 days in a row, with no known occurrences of regen.

Cheers
Steve
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June 03, 2016, 09:47:16 AM
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X5Sport

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Re: D or DS mode
« Reply #5 on: June 03, 2016, 09:47:16 AM »
Those are the right characteristics, the fans running at takeoff power are the usual giveaway.  It might be that yours hasn't run for a while?  Mine does its thing approx every 300 miles or so, but only if it gets hot enough.

A number of members gave found theirs aren't running either for some reason.  Short journeys is the usual root cause and after a while it has to be dealer 'forced', or if you have the Carly App and OBD2 module, you can trigger your own.
:type: Never anthropomorphise computers. They hate that.