Member Since: 15 Feb 2017
Location: new york
Posts: 8
Lr4 electrical issues, hvac, infotainment speedometer, radio
Hows everybody doing? I'm a long time lurker and first time poster from united states
I have a 2010 Lr4 hd hse v8 with 105000 miles which i owed for 6 years, I do my own maintenance (oil change, brake rotor, brake pad, alternator)
My car starts and drives with no issues but the instrument cluster, hvac, radio system, parking assist, etc doesn't work at all.
I refused to bring the car to the dealer but this time i might have to if i cant fix the issue. Any help will be helpful. Thank you
The car was neglected for a few years and had a sunroof leak which i believe caused a lot of issues.
So what i did to the car is far
sunroof leak is repaired,
replaced the battery with h8 interstate agm, changed ccf battery type with iidtool
replaced alternator with a new denso dan1103
checked the ground points and bcm connectors.
Here are the fault list given from the IIDTOOL BT
VIN SALAM2D40AA538073
Model L319 - LR4 2010
Vehicle scanned on Jun 28, 2022 9:36:10 AM
IIDControl 3.0.0 Build 84 Android - IIDTool BT V3.0 B2742
ACM-Audio System
U0140-00 (2B) Lost communication with body control module
( on 08-01-2024 00:53:17 at 0 mi )
U0159-00 (2B) Lost communication with parking assist control module
( on 08-01-2024 00:53:17 at 0 mi )
BCM-Body Control
U0155-00 (2F) LCD Gauge Communication Lost
( on 28-06-2022 09:35:28 )
U0164-00 (2F) Lost communication with heating ventilation and air conditioning control module
( on 28-06-2022 09:35:28 )
U0184-00 (2F) Lost communication with audio unit
( on 28-06-2022 09:35:28 )
U025D-00 (2F) Lost communication with front controls interface module B
( on 28-06-2022 09:35:28 )
FCIM-HVAC Buttons
U0140-00 (2F) Lost communication with body control module
U2100-00 (2F) Initial configuration is not complete
FCIMB-Audio Buttons
U0140-00 (2F) Lost communication with body control module
HVAC-Ventilation
B1081-00 (6C) Left temperature damper motor
B1082-00 (6C) Right temperature damper motor
B1085-00 (6C) Defrost damper motor
B1086-00 (6C) Air distribution damper motor
B1B7B-00 (6C) Air blend actuator - Rear left
B1B7D-00 (6C) Air distribution actuator - Rear
U0140-87 (6C) Lost communication with body control module - Bus signal/message failure - missing a message
U3000-87 (6C) Control module - Bus signal/message failure - missing a message
U0402-68 (2F) Invalid data received from transmission control module - Algorithm based failure - event information
U3000-87 (2F) Control module - Bus signal/message failure - missing a message
28th Jun 2022 3:03 pm
ltrains
Member Since: 15 Feb 2017
Location: new york
Posts: 8
Any help guys? 🙏
6th Jul 2022 11:00 pm
Green Land Rover
Member Since: 21 Oct 2017
Location: Stourbridge
Posts: 408
The lost comms ones are meaningless. I get them frequently.
Change of battery may have caused the others???
Is it worth clearing them and seeing if they re-appear?Discovery 4 HSE - Aintree Green
Freelander 2 TD4 SE Automatic - Tonga Green
Defender XS - Tonga Green - Gone Now
Freelander 1 Td4 ES Manual - Epsom Green - Gone Now
Freelander 1 Td4 Kalahari SE - Epsom Green - Gone Now
Freelander 1 XEi - Epsom Green - Gone Now
Member Since: 20 Jul 2015
Location: Here
Posts: 575
Check under the carpet / foam on whichever side you had the water leak for corroded splices in the wiring harness, pull off the plastic sill trims, pull back the carpet and you'll see the black harness protector / containment. Check under there for water ingress or evidence of harness corrosion. The DTC's don't point to one specific area unfortunately. As already suggested, clear and re-read after a drive cycle
'U' codes are not meaningless if there are CAN faults, look at the affected modules interconnects, there are splices in the various CAN networks where spurs are taken to modules, it should be relatively simple to work out which module is losing comms from the 'missing messages' in the other modules. All you have to do then is find the splice....
ETA All the HVAC DTC's relate to LIN's, not CAN - single wire and unlikely to be moisture induced given their position on the vehicle. Clear, road test & re-read....
8th Jul 2022 9:54 pm
ltrains
Member Since: 15 Feb 2017
Location: new york
Posts: 8
Thank you for the suggestions guys, i pulled out my carpets partially and door sills.
Checked continuity all the twisted pairs that had a splice on it, found one splice with black tape by the rear passenger seat that was corroded but wasn't the culprit.
i pulled out most of the panels to see any corrosion on the electronic modules.
I cleaned out all the ground points that were rusted also.
I clear the ecu, hard reset with the battery terminals shorted, many times.
Any more suggestions?
12th Jul 2022 9:03 pm
s60r
Member Since: 14 Mar 2021
Location: West Sussex
Posts: 287
Try the bad earth strap test?
If the earth to body starts to fail/corrode it throws all sorts of problems. Get a jump lead and attach the negative to a new earth place or on the engine block and try resetting everything.
If you’ve had a confirmed leak it Could also have water in the bcm or the plugs to/from it…..(think it’s in one of the footwells but you’ll have to check on the exact whereabouts).A mod a week until I have nothing to improve or add.
13th Jul 2022 11:37 pm
jamesSE4x4R
Member Since: 09 Mar 2016
Location: kent seaside
Posts: 176
I now have exactly the same issue, what did it turn out to be in the end?www.southeast4x4response.org.uk Responder of 9 years service SE140
Ex defender 50th owner, GB165
2010 MY XS -sold
2014 MY HSE Lux curent
2017 MY Disco Sport (wife's)
" if it fly's, floats, is fast or fornicates you can't afford it my boy" RIP Gramps 2009
14th Jul 2022 6:52 pm
Disco_driver
Member Since: 22 Oct 2017
Location: Derbyshire
Posts: 98
Add me to this list...
Did anybody figure anything out? Mine hasn't had any leaks that I know of, certainly not in my ownership.
Mine cannot see the smart key either, it will start using the key under the column emergency option, but I get no dials, well basically no electrics full stop. Exterior lights work but don't feedback to the cabin. Can't lock the vehicle either which is a bloody pain. Battery is just over 12 months, but haven't checked voltage yet. I guess check battery, check earth strap and see where I am after that?
Joe
19th Jul 2022 1:32 pm
Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1520
I'm aware of a couple of smart key based issues on here. Not sure if this is the basis of some of the problems being reported.
One was put down to a faulty KVM module meaning smart key wasn't recognised. I'll post a link for that one when I find it.
Another problem was put down to a wireless phone charger interfering with key signal.
Not sure if this helps.
Good luckGary
-------------------------------------------
Discovery 4 HSE 2016MY
19th Jul 2022 6:07 pm
Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1520
Member Since: 09 Mar 2016
Location: kent seaside
Posts: 176
After lots of diagnostics it appears to me a medium speed can bud communication error with the instrument cluster, only problem is I’ve got to get it out to take to the auto electrician (who doesn’t have a workshop and can’t store an immobile car)www.southeast4x4response.org.uk Responder of 9 years service SE140
Ex defender 50th owner, GB165
2010 MY XS -sold
2014 MY HSE Lux curent
2017 MY Disco Sport (wife's)
" if it fly's, floats, is fast or fornicates you can't afford it my boy" RIP Gramps 2009
19th Jul 2022 7:48 pm
jamesSE4x4R
Member Since: 09 Mar 2016
Location: kent seaside
Posts: 176
703jrb wrote:
Add me to this list...
Did anybody figure anything out? Mine hasn't had any leaks that I know of, certainly not in my ownership.
Mine cannot see the smart key either, it will start using the key under the column emergency option, but I get no dials, well basically no electrics full stop. Exterior lights work but don't feedback to the cabin. Can't lock the vehicle either which is a bloody pain. Battery is just over 12 months, but haven't checked voltage yet. I guess check battery, check earth strap and see where I am after that?
Joe
Exactly the same as mine, nothing on the dash or infotainment, no climate and key not found… only once the thing was started using the key under the steering wheel we could run the rest of the diagnostics.www.southeast4x4response.org.uk Responder of 9 years service SE140
Ex defender 50th owner, GB165
2010 MY XS -sold
2014 MY HSE Lux curent
2017 MY Disco Sport (wife's)
" if it fly's, floats, is fast or fornicates you can't afford it my boy" RIP Gramps 2009
19th Jul 2022 7:50 pm
Disco_driver
Member Since: 22 Oct 2017
Location: Derbyshire
Posts: 98
removed
Last edited by Disco_driver on 12th Aug 2022 12:49 pm. Edited 1 time in total
19th Jul 2022 9:06 pm
Disco_driver
Member Since: 22 Oct 2017
Location: Derbyshire
Posts: 98
Mine seems to have started behaving again - all I've managed to do so far is check the battery is good, and the alternator is putting out what I expect.
Second to that, I've unplugged my dash cams incase they were causing any problems, filled it up with diesel and filled the adblu up as that was low.
It's been in to Land Rover today as the upper tailgate is rusting from inside the weld between the two skins. It's just outside of the 6 year anti corrosion warranty, and they dismissed it as I expected. Really annoying that I've just noticed it, I just never look at the inside of the tailgate when I open it. My mate who runs a body shop won't touch it unless I waiver the paint guarantee as he says it'll just come back as the rust is inside.
Not a good week for the disco...
Joe
21st Jul 2022 6:01 pm
Disco_driver
Member Since: 22 Oct 2017
Location: Derbyshire
Posts: 98
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