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CFB
Member Since: 02 Dec 2005
Location: Bradford, West Yorkshire
Posts: 6100
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| Surging on cruise control |
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I've noticed if I use the cruise control at lower speeds, say 30- 40mph the D4 feels like it is surging and slowing constantly rather than holding a nice steady pace.
Doesn't seem to be an issue at higher speeds.
Any ideas folks? I've done a search on this and found a couple of older threads but nothing that seems to point to a possible solution.
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 27th Nov 2015 9:26 am |
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Sloss
Member Since: 18 Aug 2013
Location: Aberdeenish
Posts: 1691
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I have noticed that on my 2010 D4. Mentioned to my local Indy guy who says some do that but he doesn't know of fix.
Can't really use Cruise in Scotlandshire as we only have single track roads mostly.....  Stew,
2010 D4 gone but I really loved it
Went back to Merc - C350 AMG
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| 27th Nov 2015 10:40 am |
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Robert SausageTrousers
Member Since: 09 Aug 2015
Location: Cornwall
Posts: 467
 
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I've noticed this in my 2010 too, at around 70mph so not just at slow speed, doesn't happen all the time.
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| 27th Nov 2015 10:55 am |
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adam
Member Since: 20 Sep 2005
Location: Home and Happy
Posts: 6917
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Mine will occassionally do that - very hit and miss though ususally at 70+
When I posted it before somebody mentioned Throttle body
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| 27th Nov 2015 10:56 am |
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A1GSS
Member Since: 12 Sep 2010
Location: Saffron Walden, Essex
Posts: 4691
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Might well be completely unrelated to this but I had the same symptom on my A8 after a wheel change (20" summers to 18" winters).
Resetting the automated tyre pressure monitor system was the fix. Might be worth a try (costs nothing)... ____
Gone: 10MY L320 RR Sport HSE, Ipanema Sand
Gone: 20MY Jaguar iPace HSE, Silicon Silver
Gone: 17MY RR Evoque SE Tech, Loire Blue
Gone: 08MY Discovery 3 XS, Stornoway Grey
Gone: 07MY FFRR TDV8 Vogue, Stornoway Grey
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| 27th Nov 2015 11:56 am |
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CFB
Member Since: 02 Dec 2005
Location: Bradford, West Yorkshire
Posts: 6100
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Don't have TPMS on mine so cant try that
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| 27th Nov 2015 12:13 pm |
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A1GSS
Member Since: 12 Sep 2010
Location: Saffron Walden, Essex
Posts: 4691
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Try the Nav Recalibration after tyre change if it's there, got it on the D3 for sure. ____
Gone: 10MY L320 RR Sport HSE, Ipanema Sand
Gone: 20MY Jaguar iPace HSE, Silicon Silver
Gone: 17MY RR Evoque SE Tech, Loire Blue
Gone: 08MY Discovery 3 XS, Stornoway Grey
Gone: 07MY FFRR TDV8 Vogue, Stornoway Grey
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| 27th Nov 2015 12:15 pm |
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Robert SausageTrousers
Member Since: 09 Aug 2015
Location: Cornwall
Posts: 467
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Thinking about it, I've not noticed it happening since I had my crank sensor changed, the symptoms of the crank sensor failure were dipping revs/hunting and (very) occasional cutting out, so maybe it was part of that? I'm off on a long journey next week where I'll be able to give the cruise a good testing so I'll see how it goes.
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| 27th Nov 2015 12:29 pm |
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swansty
Member Since: 21 Sep 2008
Location: Northern Ireland
Posts: 939
 
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Mine used to do this at 70+. I think it fixed itself
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| 27th Nov 2015 2:09 pm |
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