Member Since: 12 Jan 2013
Location: Manchester
Posts: 138
Cruise control when going down hill.
Hi,
Having problems with my 2013 Disco4 XS, the issue is with the cruise control whilst going down a steepish hill, if the cruise is set to 70, it's tends to hit 77mph+. The car is not what could be called heavily loaded.
I have spoken to two dealers, one informs me it's to do with new legislation not allowing the ABS to work in conjunction with the cruise! I'm not convinced if a little porkie is being told.
Never had any of this in my 2004 TD5 cruise control.
Any thoughts
20th Oct 2013 3:06 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
The cruise control does not operate the brakes. If the car is going down a steep enough hill and the cc is already demanding zero throttle there is nothing else it can do.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73079
Same brands or automobiles (thinking of those made near a big German city beginning with M) do use the braking system to maintain the set speed, however LR isn't that brand.
20th Oct 2013 3:15 pm
JonM
Member Since: 24 May 2012
Location: North Yorkshire
Posts: 1247
You can manually ask the car to downshift using the flappy paddle so that you get more engine braking. The cruise control will stay active and keep your set speed. Assuming you're in D not S, then it will revert back to full auto when the engine braking is no longer needed.
I believe that the "Adaptive" cruise control systems do make use of the brakes to slow the car when needed.MY2022 D5 HSE D300 - with extra nice bits added
MY2019 D5 HSE 3.0 SDV6 - sold to a dealer for a crazy price! - So good I bought another!
MY2012 D4 HSE 3.0 SDV6 - retired to a new home
& that Cruise doesn't brake & correct momentum..
however my XK changes down & engine brakes on steepish hills..if you done brake....
the car doesn't runaway with itself....without use of flappy paddlesBREXIT - done properly.
Right now ...We need Government - not Politics
Save the Dipstick Flagbearer-keep it simple, less likely to fail campaign-agenda items:Starting Handles, Acetylene Lamps.
Founder: Dipsticks-R-Us Inc
D3 HSE-perfectly formed, passenger friendly...has real DIPSTICK
Jag XK-but sadly no DIPSTICK...HUGE design fault
FL2 has DIPSTICK..."real comfort in rear seats"
VW Golf wondermobile (?)..has real DIPSTICK
Morris Minor..original DIPSTICK technology..and a real KEY.
20th Oct 2013 4:26 pm
mse
Member Since: 27 Jun 2005
Location: Shropshire
Posts: 2704
If you have adaptive cruise, that operates the brakes (hate it) and will detect you approaching cars and brake you but its not on the disco's
The sport's cruise would keep it +/-2mph on hills i found - it never ran away that far on normal cruise, it would only use the engine/gearbox to do it though
20th Oct 2013 5:36 pm
steveraspberry
Member Since: 18 Sep 2011
Location: Nr Sevenoaks,Kent
Posts: 2081
Jon,
I'm not sure that's the case fella. When cruise is set, it will aim to maintain the target speed regardless of whatever gear the car is in at the time. Changing down via the paddle will just increase the revs! It is true that cruise on the D4 does not use the brakes and you will need to apply driver input on a steep descent.
Best,
Steve My17 Volvo XC90 Inscription
MY15 Mitsubishi L200 Barbarian
RGK Tiga Fx Wheelchair,
Large Alsation called Abbs
Medium blue Staffie called Piglet
Medium Alsation called Bailey
the art of driving an auto....
is to use foot off accelerator to slow (requires anticipation)
rather than accelerator - brake - accelerator - brake which goes for an un-smooth ride & just wears the brakes out....
descents you take you foot off completely & the car will gather some speed but also will shift down
& you can also change down 1 cog...
.......as an example my VW golf with DSG is still on its 1st set of brake pads & discs 67k & 3 years 9 months in my disco ones last at least 25k to 28k miles (other people also drive this & not in the same (frugal) way....
I wouldn't expect the CC to control say a steep or fast downhill descent...i Came down some really steep fast roads this autumn going to & coming back from Italy (XK) the system on here is superb...back off the throttle & the car goes slower by changing down itself...BREXIT - done properly.
Right now ...We need Government - not Politics
Save the Dipstick Flagbearer-keep it simple, less likely to fail campaign-agenda items:Starting Handles, Acetylene Lamps.
Founder: Dipsticks-R-Us Inc
D3 HSE-perfectly formed, passenger friendly...has real DIPSTICK
Jag XK-but sadly no DIPSTICK...HUGE design fault
FL2 has DIPSTICK..."real comfort in rear seats"
VW Golf wondermobile (?)..has real DIPSTICK
Morris Minor..original DIPSTICK technology..and a real KEY.
The old technique was to knock it into neutral and coast down as fast as you could so that you got as far as possible up the other side without having to use fuel. Then getting it into gear while still moving with a Gardiner 180 and a crash box certainly seperated men from the others. With this auto-thingie it sounds like you dont even need to be there!A vaccine does not stop you catching a virus, or passing it on, or getting ill from it, really ill. It does reduce the likelyhood of you dying when really, really ill. Stay Alive - KEEP AWAY FROM PEOPLE.
GARDINER...
reputedly the very best in Diesel engines bar none....
I only ever worked on one - an alternator power unit on a BP ship....just brilliantBREXIT - done properly.
Right now ...We need Government - not Politics
Save the Dipstick Flagbearer-keep it simple, less likely to fail campaign-agenda items:Starting Handles, Acetylene Lamps.
Founder: Dipsticks-R-Us Inc
D3 HSE-perfectly formed, passenger friendly...has real DIPSTICK
Jag XK-but sadly no DIPSTICK...HUGE design fault
FL2 has DIPSTICK..."real comfort in rear seats"
VW Golf wondermobile (?)..has real DIPSTICK
Morris Minor..original DIPSTICK technology..and a real KEY.
20th Oct 2013 7:40 pm
sj9011
Member Since: 04 Jun 2011
Location: Southampton
Posts: 356
D3
Heavy towing, first changed front pads and discs at 70K and rear pads at 95K always use manual shift on hills and anticipation driving many many thousand up and down mountain's in France Spain, on top of that 70K on AT Grabbers, trick is let the disco do her thing and don't push her, maybe it's something to be a Class 1 driver as well???? sure i'll get stink for that
Sean
20th Oct 2013 9:45 pm
Sloss
Member Since: 18 Aug 2013
Location: Aberdeenish
Posts: 1691
Re: Now you're talking
Correct spelin' folks:
L. Gardner and Sons
L. Gardner and Sons Ltd was a well-known British builder of diesel engines for stationary, marine, road and rail applications. The company was founded in Hulme Manchester England in 1868. They started building engines around 1895. The firm of L. Gardner & Sons ceased engine production in the mid-1990s.
The '180' produced 180 HP at 1850 RPM from 10,450cc not a lot of horses but plenty torque to lug a fair few tons of freight
StewStew,
2010 D4 gone but I really loved it
Went back to Merc - C350 AMG
My petrol D3 changed down on steep hills of its own accord to control/reduce speed, my diesel D4 does not, (similar to the OP) - not sure what the sw change is that allows this?Craig
2015 D? SDV6 HSE Loire Blue
2009 D4 TDV6 HSE Santorini Black
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Driven by Rudi Thoelen, 2003 Winner
L. Gardner and Sons Ltd was a well-known British builder of diesel engines for stationary, marine, road and rail applications. The company was founded in Hulme Manchester England in 1868. They started building engines around 1895. The firm of L. Gardner & Sons ceased engine production in the mid-1990s.
The '180' produced 180 HP at 1850 RPM from 10,450cc not a lot of horses but plenty torque to lug a fair few tons of freight
Stew
Preferred the 8LXB 240, straight eight, would go for ever.
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