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![]() | Home > In Car Electronics > 2014 cruise control and start stop not working |
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gasman Member Since: 02 May 2013 Location: Tyneside Posts: 372 ![]() ![]() ![]() |
I have a 2009 diesel and the cruise control has never operated below about 45 mph.
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IanMetro Member Since: 11 Sep 2017 Location: Somerset BS21 Posts: 1621 ![]() ![]() ![]() |
Check that you have not got HDC or Terrain Response selected.
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BossBob Member Since: 30 Sep 2010 Location: Bristol Posts: 706 ![]() ![]() ![]() |
I’d also comment that a new battery is not necessarily a fully charged battery and normal use of the car will also not fully charge the battery either. |
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dorsetfreelander Member Since: 20 Jul 2013 Location: Dorset Posts: 4056 ![]() ![]() ![]() |
Cruise control works on my 14 reg even when HDC is on. I tried it recently going down a steep hill and you can control the rate of decent with the cruise buttons. 3 x FL1 2 manual + 1 auto no real problems
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IanMetro Member Since: 11 Sep 2017 Location: Somerset BS21 Posts: 1621 ![]() ![]() ![]() |
Dorsetfreelander you are right that, in HDC, the buttons control the descent speed limit, but as far as I know they do not control the minimum speed as they do when used in Cruise Control.
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sanderson624 Member Since: 13 Jan 2021 Location: Cambridge Posts: 5 ![]() ![]() ![]() |
Thanks all, I maybe further forwards.....
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Worms Member Since: 31 Oct 2017 Location: Highlands Posts: 545 ![]() ![]() ![]() |
I don't know if it is relevant, but a slipping clutch or flywheel might also prevent the cruise control operating properly. 2010 model year FL2 TD4e GS - now at 142,000 miles, 62,000 of them mine.
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IanMetro Member Since: 11 Sep 2017 Location: Somerset BS21 Posts: 1621 ![]() ![]() ![]() |
There are 3 switches in the clutch area that interact with the Stop/Start and Cruise Control.
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sanderson624 Member Since: 13 Jan 2021 Location: Cambridge Posts: 5 ![]() ![]() ![]() |
Thanks ianmetro, after more exploring on the autologic I found the clutch position switch displayed as a percentage in the body control module. With the clutch fully up it shows 28% as a position and fully down it shows 108% so in my mind it’s leading to a master cylinder? As you said above the sensor is in the master cylinder. Out of interest where did you get your info from? I can’t find a workshop manual anywhere!! |
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sanderson624 Member Since: 13 Jan 2021 Location: Cambridge Posts: 5 ![]() ![]() ![]() |
I think I may have cracked it!! Just been to Cambridge, when the vehicles warm the clutch position shows 21% and everything works as it should, so my guess is the master cylinder is tight, when cold it isn’t returning properly. Thanks |
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SYFL2 Member Since: 16 Jun 2012 Location: Sheffield Posts: 1920 ![]() ![]() |
I wonder if a fluid change would help. |
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IanMetro Member Since: 11 Sep 2017 Location: Somerset BS21 Posts: 1621 ![]() ![]() ![]() |
Handbooks, etc - courtesy of alex_pescaru
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sanderson624 Member Since: 13 Jan 2021 Location: Cambridge Posts: 5 ![]() ![]() ![]() |
Exellent, thanks for those links, I shall have a good read up |
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