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Cruise control only accelerates and iPhone won't work!
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L80
 


Member Since: 15 Jul 2015
Location: Scotland
Posts: 1

Scotland 2009 Discovery 4 3.0 TDV6 HSE Auto Baltic BlueDiscovery 4
Cruise control only accelerates and iPhone won't work!

Hi there! I recently bought a discovery 4 through a private sale as an upgrade to my disco 3. I had many many sensors etc go on the disco 3 but that's common so we fixed them and got on with it! Everything seems to be going well with our disco 4 so far except 2 things.... When we activate cruise control it accelerates and just keeps going, regardless of what button you press and what speed you are doing it just pulls and pulls until you give in pressing buttons at excessive speeds and cancel it. Any ideas what could be causing it? Don't want to take it near a dealer just yet Shocked Shocked

Also, the connector for iPhones etc in the centre console doesn't work. When I connect my iPhone 6 via the use port and select use on the touchscreen it says device error... Again, any ideas?

Many thanks in advance for any help or advice!
  
Post #150218215th Jul 2015 5:09 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20830

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

D4 suffers from the same CC issues as D3, faulty switch pack or wiring loom would be the place to start Thumbs Up
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Post #150219015th Jul 2015 5:41 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8217

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

I've got a PCB and silicone membrane for the D4 CC switch pack you could try, the switch will have to be opened up of course to fit it. Thumbs Up
Thinking about it although it could be the loom, if the membrane is not located correct or is breaking up it will hold the cruise + switch on.


 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #150222815th Jul 2015 6:46 pm
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Hairy Dan
 


Member Since: 19 Jan 2011
Location: Co. Durham
Posts: 12319

United Kingdom 2016 Discovery 4 3.0 TDV6 Landmark LE Auto Santorini BlackDiscovery 4
Re: Cruise control only accelerates and iPhone won't work!

L80 wrote:


Also, the connector for iPhones etc in the centre console doesn't work. When I connect my iPhone 6 via the use port and select use on the touchscreen it says device error... Again, any ideas?



As far as I remember on the early D4's you couldn't connect an i device via the usb port in the cubby box you had to use the special cable like this one Thumbs Up

Click image to enlarge
 Cheers Ian
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Post #150229715th Jul 2015 8:51 pm
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bobgolden
 


Member Since: 15 Oct 2010
Location: South Yorkshire
Posts: 907

United Kingdom 2011 Discovery 4 3.0 SDV6 HSE Auto Nara BronzeDiscovery 4

HD is correct. You needed a £25 iPhone connector on my MY11 but I don't think they did a lightning connector for the latest iPhones. You could try using a 30pin to lightning connector but be aware that they don't fit if you have any kind of case fitted that encloses the port as the width of the adaptor will stop it being pushed in far enough.

IMO the USB on the MY11 was a waste of space - even using a pen drive with music on wasn't successful as the volume was way too low and if you switched sources you'd sh*t yourself when the radio came on.
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Post #150241116th Jul 2015 9:52 am
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Tim-L
 


Member Since: 30 Sep 2022
Location: Swansea
Posts: 1

United Kingdom 2011 Discovery 4 3.0 SDV6 Landmark LE Auto Fuji WhiteDiscovery 4

Hello All,
I've recently bought a 2011 D4 and found the same thing with the CC.
It's OK going uphill, it remains at set speed, but on the flat or worse on the downhill it will keep accelerating. I need to click cancel, wait for the car to drop back to the speed limit, then click resume.

Does this CC system use a vacuum system to hold the speed? or is that only for older cars?
I read somewhere that vacuum hoses and/or reservoirs can fail and need to be replaced?
Cheer Tim.
  
Post #230918430th Sep 2022 1:54 am
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