Member Since: 21 Oct 2016
Location: kent
Posts: 14138
Many thks
Plus of i hope i haven’t taken the thread off course from the original question
Trouble is my brain starts to run away with itself and always like to learn , Must sit on hands and say “ gary, step away from the iPad” ,
26th Jun 2021 11:38 pm
Karl Mitchell
Member Since: 11 Mar 2021
Location: Somerset
Posts: 29
Constant acceleration in cruise control
When using set function, speed just keeps on creeping up. Not as aggressively as resume but like a moderate throttle press. Not as strong as just keeping set pressed.
I've tried using the cruise control buttons to navigate the iid tool menus and it seems to work as expected. So don't think the switchpack is at fault.
The instrument shows the selected speed but the vehicle accelerates past that and keeps going until you cancel, brake or crash presumably lol
The cruise speed remains at the set amount in the display, and the cruise control buttons work fine to navigate the iid tool menu. Occasionally, speed minus control will change down the speed value in the display but the vehicle continues to accelerates. Mostly the speed down button just causes random values to appear in the display.
Have spoken to the team at gap, but they are stumped and suggested posting here, so.....
Last edited by Karl Mitchell on 30th Jun 2021 7:49 pm. Edited 1 time in total
30th Jun 2021 7:02 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
We get lots of dash/steering wheel button issues at work due to drivers smothering the dash in alcohol spray, this gets in the switches and effects the rubber membranes inside, so the switches can work okay but also do odd things at the same time.
30th Jun 2021 7:07 pm
Karl Mitchell
Member Since: 11 Mar 2021
Location: Somerset
Posts: 29
Fair enough, although no liquid or cleaning products have been used on this D4 since I've had it.(some months now)
If it was a switchpack issue, surely the value in the ipc would rise as if the + button was pressed? Mine says 40mph say, but keeps accelerating. The display stays at 40 though!
30th Jun 2021 7:14 pm
Karl Mitchell
Member Since: 11 Mar 2021
Location: Somerset
Posts: 29
Anyone else had this issue? Or found a solution?The expert is the last person called - usually to share the blame!
I remember an issue years ago in a Ford Mondeo where you could keep pressing the + button and it would try to get to 255KMH.
Has the engine been mapped?1972 Range Rover Classic 2 door V8
2013 Land Rover Discovery 4 HSE - SCRAPPED
2016 Land Rover Discovery 4 Landmark
2022 Volvo XC40 T5 PHEV 282HP FWD 3 cylinder!
30th Jun 2021 8:26 pm
Karl Mitchell
Member Since: 11 Mar 2021
Location: Somerset
Posts: 29
Not to my knowledge. Certainly nothing like that prior to this occurrence.
How would I know anyway?The expert is the last person called - usually to share the blame!
30th Jun 2021 9:28 pm
simo938
Member Since: 28 Mar 2016
Location: Sheffield
Posts: 7
This sounds very similar to mine, not managed to find a cause yet. It does seem to maintain the correct speed going up inclines though, however on a slight down gradient it will just keep rising slightly until I ‘chicken out’
25th Jul 2021 12:28 pm
Karl Mitchell
Member Since: 11 Mar 2021
Location: Somerset
Posts: 29
Yes.it is tedious. Bah humbug.
Might risk a visit to the stealer.The expert is the last person called - usually to share the blame!
25th Jul 2021 1:45 pm
the_diesel
Member Since: 03 Sep 2013
Location: Gold Coast
Posts: 10
I have this issue, worked fine then suddenly this acceleration started on cruise control selection.
It started at the same time I started getting occasional faults from the ABS ECU, invalid data received from some other ECU, I will have to look back, was related to headlights (weird)...
I have read a few threads on the internet about others with the same issue, no one has posted a solution.
15th May 2022 11:06 pm
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20844
Had this on a customers car once. Set cruise at any speed, and it would accelerate by its self upto 80-something mph. Had us stumped for a while!
The EPB module had broken off the bubber mounts that secure it to the chassis, and was leaning forward
We replaced the mounts, problem solved. Be worth checkingMy D3 Build Thread
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