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Adaptive Cruise Control 2016 Discovery 4
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RATA1
 


Member Since: 27 Feb 2020
Location: Somerset
Posts: 353

United Kingdom 2014 Discovery 4 3.0 SDV6 XXV LE Auto Causeway GreyDiscovery 4

Hello,
I discussed with Pat and he said that the calibrate routine is simply the tool instructing the ACC radar to calibrate. From the debug logs I took - this works so it is a problem between the ACC ECU and the engine ECU (most likely).

I cannot upgrade my engine ECU further looking at the IID report.

I have one more "idea" which is being looked at with another member but after that all I can see if someone is "really keen" to have it, is 2015-2016 ECU pack (engine ECU/BCM/dash + key thing plus others like ABS/TCCM possibly) from eBay then the added hassle that comes with swapping it out. Not an option for me in my current car Evil or Very Mad
 In today's world, if you contribute something, you don't contribute enough. If you contribute nothing, you receive everything.



2014 Discovery XXV
1961 Series 2 
 
Post #222550719th Apr 2021 11:41 am
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hickersb
 


Member Since: 30 Nov 2017
Location: Denver CO
Posts: 4

United States 2012 LR4 5.0 V8 HSE Auto Buckingham BlueLR4

This seems a bit weird -- it looks like LR038618 is the part # for the ECU for both 2014 and 2015 ECUs.... (In which case you'd think the code is either there is isn't there... or that you could flash the appropriate file to the hardware, since the hardware should be the same)...
  
Post #222616322nd Apr 2021 2:37 pm
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mjom89
 


Member Since: 13 Sep 2011
Location: Essex
Posts: 593

England 2016 Discovery 4 3.0 SDV6 Commercial Auto Loire BlueDiscovery 4

Dondiddy wrote:
Yes I would do as suggested. Change the CCF back to remove the ACC (and remove the fuse) and see if everything works ok. You should leave the new switchpack in place to see how it goes. If still getting issues then change back to the original switchpack and see what you get.


It took me some time to get around to this but I did as suggested and removed the fuses, reverted the CCF and was able to use cruise as normal. No visible errors but the fault with the left hand switch packs kept coming back each time I cleared it.

Today I fitted a replacement ACC switch pack (bought from LR again as it was too much bother to get them to diagnose the problem) replaced the fuses and reset the CCF and it all seems to work. Faults are gone for now and ACC works Very Happy

However… the horn doesn’t work on the new switch! FFS…… Could this be something I could fix myself?
  
Post #22284755th May 2021 9:23 pm
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Famousfive
 


Member Since: 12 Aug 2014
Location: Southampton
Posts: 1831

Ukraine 2013 Discovery 4 3.0 TDV6 GS Auto Loire BlueDiscovery 4

Good news ... but the horn not working is a tell tail sign of the switch packs being mismatched Evil or Very Mad
 Stolen - D4 Loire Blue
D4 Bali Blue 
 
Post #22284765th May 2021 9:43 pm
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mjom89
 


Member Since: 13 Sep 2011
Location: Essex
Posts: 593

England 2016 Discovery 4 3.0 SDV6 Commercial Auto Loire BlueDiscovery 4

Ahh great! That will be the problem then as I also put a different right hand switch pack in at the same time. I will swap that one back.
  
Post #22285016th May 2021 6:52 am
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mjom89
 


Member Since: 13 Sep 2011
Location: Essex
Posts: 593

England 2016 Discovery 4 3.0 SDV6 Commercial Auto Loire BlueDiscovery 4

Switched the right-hand switch pack back to my existing one and all is good now. Must have been a mismatch as suggested by Famousfive. Thanks again!
  
Post #22287567th May 2021 11:06 am
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hgrimmett
 


Member Since: 11 Oct 2009
Location: Bledlow
Posts: 901

2015 Discovery 4 3.0 SDV6 SE Tech Auto Indus SilverDiscovery 4

Right, it's finally my turn to have a crack at this. FPLA sensor arrived today, hopefully switchgear tomorrow. Just weighing up whether to go for the original bracket or to bodge it?
 -------------------------------------------------------------------
D4 '15 (64) Se Tech Indus Silver
Tesla Model Y LR (22)
Audi TT Roadster 225 (52)
Tesla Model 3 LR (70) (gone)
Porsche Boxster '96 2.5 5spd project (P)
Mini R52 S (54)
BMW 330e eDrive MSport '16 (gone)
D3 '07 (56) XS TDV6 Buckingham Blue (gone) 
 
Post #222959411th May 2021 8:36 pm
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Famousfive
 


Member Since: 12 Aug 2014
Location: Southampton
Posts: 1831

Ukraine 2013 Discovery 4 3.0 TDV6 GS Auto Loire BlueDiscovery 4

I think the bracket is useful - I moved position of it to be front of radiator for a test rig (it worked) - pics below

Click image to enlarge

Click image to enlarge
 Stolen - D4 Loire Blue
D4 Bali Blue 
 
Post #222971512th May 2021 11:31 am
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hgrimmett
 


Member Since: 11 Oct 2009
Location: Bledlow
Posts: 901

2015 Discovery 4 3.0 SDV6 SE Tech Auto Indus SilverDiscovery 4

OK, thanks, interesting. My sensor came with the bracket off the donor car but not the genuine bracket for the D4 which was what I was talking about. I have actually bought the bracket LR062475 as i have a fetish for originality and I'm expecting the cable to be fitted ready and waiting for me when I remove the bumper!! That's the plan anyway, we'll see how it turns out! Whistle
 -------------------------------------------------------------------
D4 '15 (64) Se Tech Indus Silver
Tesla Model Y LR (22)
Audi TT Roadster 225 (52)
Tesla Model 3 LR (70) (gone)
Porsche Boxster '96 2.5 5spd project (P)
Mini R52 S (54)
BMW 330e eDrive MSport '16 (gone)
D3 '07 (56) XS TDV6 Buckingham Blue (gone) 
 
Post #222972212th May 2021 11:55 am
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Dondiddy
 


Member Since: 26 Dec 2019
Location: Hamilton
Posts: 309

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Yulong WhiteDiscovery 4

I cut down the original bracket and used that as I decided that for 20 mins work it would save me a £100 or so! Its not seen when the bumper is on and since fitting it last year it has been problem free! It not bodged and still gives you all the adjustments that the proper one would! Thumbs Up
  
Post #222973012th May 2021 1:13 pm
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hgrimmett
 


Member Since: 11 Oct 2009
Location: Bledlow
Posts: 901

2015 Discovery 4 3.0 SDV6 SE Tech Auto Indus SilverDiscovery 4

Sorry, I was being a bit mischievious when I wrote 'bodge' as I knew you and others had used that bracket. I just don't get much time so I'd rather just know I've got parts I can just bolt on and go, but you're right, for the sake of the £120 I just spent, i could have very reasonably cut down the bracket i have. As long as my wife doesn't find out it'll be fine. Rolling with laughter
 -------------------------------------------------------------------
D4 '15 (64) Se Tech Indus Silver
Tesla Model Y LR (22)
Audi TT Roadster 225 (52)
Tesla Model 3 LR (70) (gone)
Porsche Boxster '96 2.5 5spd project (P)
Mini R52 S (54)
BMW 330e eDrive MSport '16 (gone)
D3 '07 (56) XS TDV6 Buckingham Blue (gone) 
 
Post #222974212th May 2021 2:26 pm
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Dondiddy
 


Member Since: 26 Dec 2019
Location: Hamilton
Posts: 309

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Yulong WhiteDiscovery 4

I did swither for ages when deciding whether to get the proper bracket or not! In the end I decided that I would have a go with the original one and if it didn`t work out then I would get the proper one! As it turned out the original one has been fine and the £100 saved went on other stuff! Whistle
  
Post #222974312th May 2021 2:33 pm
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ger.isi
 


Member Since: 25 Dec 2009
Location: Lower Austria
Posts: 2

Austria 2014 Discovery 4 3.0 SDV6 HSE Auto Nara BronzeDiscovery 4


RATA1 wrote:
I fitted my switch pack the other night with no issue. Airbag popped back on no problem.
Not driven it so no idea if the cruise still works though.

To complete it I am just waiting on a radar unit and the correctly coloured cables, connectors and convoluted tubing needed to make up the new loom. Thumbs Up

Has anyone else taken their bumper off and found no cable?

Did so today and found no cable on my 2014 model.
Is there a solution working in my case??
  
Post #223322430th May 2021 8:27 am
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Famousfive
 


Member Since: 12 Aug 2014
Location: Southampton
Posts: 1831

Ukraine 2013 Discovery 4 3.0 TDV6 GS Auto Loire BlueDiscovery 4

Not yet no. I wonder if the pre MY15s need an updated dash that contains the green ACC icon?

It looks like a firmware update somewhere along the line
 Stolen - D4 Loire Blue
D4 Bali Blue 
 
Post #223325130th May 2021 1:24 pm
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grzesiul
 


Member Since: 11 May 2008
Location: UK
Posts: 6400

Poland 2016 Discovery 4 3.0 SDV6 SE Auto Loire BlueDiscovery 4

Did any of you gents who completed the upgrade used any different harness when swapping switchpacks?

Original site for this mod mentiones this harness to be used: "For further cabling the wiring harness (LR051624, 13N866B) is used."

Kind regards
Greg
  
Post #223337531st May 2021 6:30 pm
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