DISCO3.CO.UK - View topic - Transmission metal sump, filter change and continued errors

brob

Member Since: 05 Nov 2020
Location: UK
Posts: 16

Transmission metal sump, filter change and continued errors

After a gasket leak, I bought a Metal Sump Filter ATF Fluid Kit & Wiring Sleeve kit. Had this replaced, but a lot of back and forth with the garage doing the work at the time stating it was the wrong part (it wasn’t) and required the two part kit (it was), and supposed to be the best for LR locally (not sure now). Turns out they didn’t double flush as requested, and I’m still getting errors. They are saying that it the transmission errors are linked to an ABS issue which all relates to a control module. However, it has gone from regular transmission fault traction reduced errors, to now twice not starting due to transmission error, which is “solved” by switching through neutral, drive etc, and back. Any ideas or insights much appreciated. Did hit some water which started this string of issues, and in all terrain mode it the display of the wheels does show as off to the right. But the transmission errors started much later, and I believe are not connected to the other issue. Thanks.

30th Oct 2023 9:45 am

brob

Member Since: 05 Nov 2020
Location: UK
Posts: 16

Transmission errors after sump/filter/sleeve change

Had the sump replaced with a metal sump, filter, and shuddering issue fixed, but still get errors and an F from time to time, plus now an issue where the error shows when trying to turn the ignition on which can be bypassed by switching through neutral, drive, reverse etc and back. Any ideas? This all seems and feels new. Garage said it seems related to ABS control.

30th Oct 2023 10:38 am

nigethecat

Member Since: 11 Sep 2016
Location: Marnoch
Posts: 4153

2016 Discovery 4 3.0 SDV6 Commercial XS Auto Corris Grey

Do you have access to a code reader? Ideally a GAP IID...get thee codes read, note them then clear and drive a few miles and see what comes back..

If you don't have a code reader then see if any of the nice folks on here are nearby and may be willing to help... I want to see the sweets before I get into your windowless van... I'm not stupid!

Corris Grey D4 Commercial SE 2016
Zermatt Sliver 2007 D3 SE manual (gone)
Indus Silver D4 HSE 2015 (gone)
Bonatti Grey D3 HSE 2006 (gone)
White D3 S (LHD) 2007 (gone)
Firenze Red D4 HSE 2014 (gone)
Black RRS 3.6TDV8 2008 (gone)
Rusty Green Defender 110 1997 (gone)
Black FL2 HSE 2013 (gone)

30th Oct 2023 11:55 am

Pete K

Member Since: 15 Jan 2016
Location: GL
Posts: 10378

2005 Discovery 3 TDV6 HSE Auto Rimini Red

it's unlikely that a double flush or not would result in it not starting or giving an F display.
Something else going on there.

30th Oct 2023 6:44 pm

loanrangie

Member Since: 18 Jun 2017
Location: Melbourne
Posts: 606

2008 Discovery 3 TDV6 SE Auto Stornoway Grey

Sounds like the cable pin isn't aligned in the slot of the magnetic strip on the mechatronic unit, if anything a flush can sometimes cause shifting issues and not always cure them.

31st Oct 2023 12:01 am

brob

Member Since: 05 Nov 2020
Location: UK
Posts: 16

Thanks for the input, I read this somewhere else too. Is this in or connecting to the transmission? “ Sounds like the cable pin isn't aligned in the slot of the magnetic strip on the mechatronic unit” I’m assuming this is something that can go wrong in doing the work on the transmission? As in it needs to be disconnected and then reconnected? I was also looking at YouTube videos showing where the TCM (transmission control module) when situated behind the battery can ingest water / corrode and lead to similar issues, but on my model according to the Haynes manual, the TCM is located in the transmission casing itself. If so, is it fair to assume the issue could relate to the the TCM <-> the wiring through the sleeve (as I saw elsewhere on disco3 forum that replacing the sleeve was a must do and my confidence in the work done and the sleeve being replaced is not 100%), <-> and or the pin issue you suggest?

The garage that did the work are suggesting that the current issue relates to the prior issue of ABS brakes kicking in, however after I calibrated the steering angle (and on the rare occasion where the the current transmissions errors aren’t displaying) the ABS brakes no longer kick in, which seems to point to the transmission issues being new and relating to the work done by the garage. Here’s some notes from the garage:

“ I have checked your history and we have recommended that we suspect the fault with the transmission is actually within the ABS system, which works closely alongside and shares data with the transmission. ”

“ [we] connected the vehicle to diagnostic equipment to communicate with the management system. Read diagnostic trouble codes, found a list of codes logged, too many to record, photos captured and codes cleared, re scanned and found codes in ABS module C1A00 - control module fault and codes from other modules that have lost commas with the abs module … recommend the module is sent for testing.”

As mentioned, after calibrating the steering angle the ABS brakes have not kicked in, but that doesn’t mean that there isn’t another module playing up. I hit some flood water before, so potentially there is some water ingestion in some module some place 😬

Thanks for any advice/thoughts, really appreciate it. Getting an F error quite frequently now, that seems to lock the car to a Mac on 30mph..

I bought a icarsoft lr 3.0 for the steering calibration, so will record the TCM data as I drive after clearing error codes.

7th Nov 2023 4:58 pm

Lee Trinder

Member Since: 12 Aug 2018
Location: Henley in arden
Posts: 515

2007 Discovery 3 TDV6 HSE Auto Stornoway Grey

Hi, can you reset the gearbox adaptions?
I think that’s what you’re supposed to do after an oil change.

7th Nov 2023 7:33 pm

Pete K

Member Since: 15 Jan 2016
Location: GL
Posts: 10378

The real question is, did they remove the megatronics unit when they had it apart?

If they did, this is where the selector cable and slider can come out of step.

The gearbox ecu is inside the gearbox itself.

Resetting adaptations will make it shift poorly for 3 days. Maybe something to do after the current issue is sorted

Watch the first video here to understand what is inside the gearbox

https://www.disco3.co.uk/forum/replacing-auto-box-206344.html

7th Nov 2023 8:10 pm

brob

Member Since: 05 Nov 2020
Location: UK
Posts: 16

Thanks for this. Great video! Will definitely ask if they removed the megatronics unit when they had it apart.

I am writing up an email for the garage that did the work... Had an afternoon of testing (and an evening of writing up the codes below

). I also recorded live data for the Transmission control module, need to run through that. Drove a few mile miles. Stopped. Recorded new tests. It's purely observation, but the transmission issue before was pretty straight forward, it had leaked, the fluid was low, gasket needed replacing. This was probably due to the downpipe breaking after hitting some flood water, and the plastic sump might have warped. Replaced with a metal sump, new filter, requested a double fluch from the garage, provided fluid for it, but only did the single flush, and I am not sure if they replaced the sleeve, which was also provided... but on the day in question, the technician doing the work spent half the day stating that the parts were wrong and that he needed a two-part filter/sump... which this was, so my confidence in the work done is super low. And ever since the transmission errors have been frequent, and seem to relate to very specific occurrences - usually a bump in the road, or turn, and sometimes when traveling at a consistent speed resulting in consistent repeat warning messages.

The frequent transmission errors are definitely since the work done. But open to going through teh various modules and checking for water damage, and to being wrong about the issues. But the frequent transmission errors are turning into frequent F warnings with a max speed of 30, so something is getting worse.

ECM (Engine Control Module)
P0405-00 Permanent / Exhaust gas recirculation sensor A - circuit low
P1621-00 Pending / Immobiliser code words do not match
U0155-00 Historic / Lost communication with instrument cluster control module
P1935-00 Intermittent / Brake switch/sensor signal
P1934-00 Intermittent / Vehicle speed signal
U0073-00 Intermittent / Control module communication bus off
U0102-00 Intermittent / Lost communication with transfer case control module
U0121-00 Intermittent / Lost communication with ABS control module
U0138-00 Intermittent / Lost communication with all terrain control module
U0151-00 Intermittent / Lost communication with restraints control module
U0101-00 Intermittent / Lost communication with transmission control nodule
U0164-00 Intermittent / Lost communication with heating ventilation and air conditioning control module
U0155-00 Intermittent / Lost communication with instrument cluster control module
U0128-00 Intermittent / Lost communication with parking brake control module
P0578-00 Intermittent / Speed control multi-function input A circuit is stuck

TCM (Transmission control module)
U0102-87 Intermittent / Lost communication with transfer case control module
U0122-87 Intermittent / Lost communication with vehicle dynamics control module
U0155-87 Permanent / Lost communication with instrument cluster control module
U0126-87 Historic / Lost communication with steering angle sensor module
U0100-87 Intermittent / Lost communication with engine control module/powertrain control module A
U0300-55 Intermittent / Internal control module software incompatibility
U0128-87 Historic / Lost communication with parking brake control module

SRS (Supplemental Inflatable Restraint System)
U0122-87 Intermittent / Lost communication with vehicle dynamics control module
U0155-87 Intermittent / Lost communication with instrument cluster control module
B00D2-87 Intermittent / Restraint system malfunction indicator 1

RLM (Ride level control module)
U0122-87 Intermittent / Lost communication with vehicle dynamics control module
U0416-86 Pending / Invalid data received from vehicle dynamics control module
U0155-87 Intermittent / Lost communication with instrument cluster control module
U0100-87 Intermittent / Lost communication with engine control module/powertrain control module A
U0401-86 Pending / Invalid data received from engine control module/powertrain control module A
U0126-87 Intermittent / Lost communication with steering angle sensor module
U0101-87 Intermittent / Lost communication with transmission control module
U0128-87 Intermittent / Lost communication with parking brake control module
U0102-87 Intermittent / Lost communication with transfer case control module
U1A13-87 Intermittent / Lost communication with all terrain control module
U0300-55 Intermittent / Internal control module software incompatibility
U0073-88 Intermittent / Control module communication bus off

SASM (Steering Angle Sensor Module)
U0122-87 Intermittent / Lost communication with vehicle dynamics control module
U0300-55 Intermittent / Internal control module software incompatibility

ATCM (All terrain control module)
U0100-87 Intermittent / Lost communication with engine control module/powertrain control module A
U0101-87 Intermittent / Lost communication with transmission control nodule
U0122-87 Intermittent / Lost communication with vehicle dynamics control module
U0102-87 Intermittent / Lost communication with transfer case control module
U0132-87 Intermittent / Lost communication with ride level control module
U0402-94 Pending / Invalid data received from transmission control module
U0416-94 Pending / Invalid data received from vehicle dynamics control module
U0403-94 Pending / Invalid data received from transfer case control module
U0421-94 Pending / Invalid data received from ride level control module
U0300-55 Intermittent / Internal control module software incompatibility

PBM (Parking brake module)
U0100-87 Intermittent / Lost communication with engine control module/powertrain control module A
U0155-87 Intermittent / Lost communication with instrument cluster control module
U0101-87 Intermittent / Lost communication with transmission control nodule
U0122-87 Intermittent / Lost communication with vehicle dynamics control module

TCCM (Transfer Case Control Module)
U0073-88 Intermittent / Control module communication bus off
U0132-87 Intermittent / Lost communication with ride level control module
U0100-87 Intermittent / Lost communication with engine control module/powertrain control module A
U0128-87 Intermittent / Lost communication with parking brake control module
U0155-87 Intermittent / Lost communication with instrument cluster control module
U0126-87 Intermittent / Lost communication with steering angle sensor module
U0122-87 Intermittent / Lost communication with vehicle dynamics control module
U0101-87 Intermittent / Lost communication with transmission control module
U0138-86 Intermittent / Lost communication with all terrain control module
U1A03-87 Intermittent / Vehicle configuration parameter

VDM (Vehicle Dynamics Control Module)
C1A00-88 Permanent / Control Module
U0403-94 Intermittent / Invalid data received from transfer case control module
U0155-87 Intermittent / Lost communication with instrument cluster control module
U0102-87 Intermittent / Lost communication with transfer case control module
U01C1-0F Undefined fault code
B0820-F1 Undefined fault code

BCM (Body Control Module)
B1B02-28 Permanent / Low frequency coil
B1B70-01 Intermittent / Local interconnection network bus circuit 2
B1C57-14 Intermittent / Unused relay drive
B1D01-15 Intermittent / Right low beam circuit
B1D14-15 Intermittent / Interior lamps 2 circuit

7th Nov 2023 10:56 pm

Pete K

Member Since: 15 Jan 2016
Location: GL
Posts: 10378

Don’t think there are any gearbox codes there

I guess that means connector, or external issue or codes not read

Maybe garage is right.

7th Nov 2023 11:21 pm

brob

Member Since: 05 Nov 2020
Location: UK
Posts: 16

Garage might be right as in being linked to an ABS control module? The part was correct and the garage admitted that before installing. Could it perhaps be intermittent communication issues with the Transmission Control Module, if the wiring has been compromised or as you suggest the cable pin isn't aligned in the slot of the magnetic strip on the mechatronic unit?

7th Nov 2023 11:39 pm

Pete K

Member Since: 15 Jan 2016
Location: GL
Posts: 10378

Are you just getting F on the dash or orange lights as well?

I can’t see any ABS codes listed. Is that genuine ?

What code reader are you using ? Suggest you clear codes now.
Wait until F reappears and then read

8th Nov 2023 7:46 am

loanrangie

Member Since: 18 Jun 2017
Location: Melbourne
Posts: 606

Check that the mechatronic plug is seated and locked in correctly and check the plug for AT fluid ingress.

9th Nov 2023 4:58 am

brob

Member Since: 05 Nov 2020
Location: UK
Posts: 16

I stopped today after dropping the kids and took a moment with the engine running, in park, heating on, to watch the sun rise. I was surprised to see the Transmission error flashing up, and noticed a click and the suspension slightly raising in time with the error. I eventually turned the engine off, leaving the ignition on, saw the transmission error again. Videoed both, didn’t quite catch the raising up and down but you might be able to see the camera move slightly.

Engine running. Car idle.
?si=gkg7mXKXu2BLp4XS

Engine off. Ignition on. (Apologies for the audio, was listening to a tutorial)
?si=-K-JCkIYbBZsaa6S

I realise I’m throwing info up with little idea on whether useful or not. The errors recorded above seem consistent. On the rare occasion where I start the engine and no errors display, if I turn DSC off, I can have no errors for the duration of the drive, full suspension and a smooth ride. If when it does this, and I set to full height suspension and turn LR D3 off, the front right will be approx 1cm lower on the right front by the morning. I suspect that I have overlapping issues.

I usually see the Transmission error first. When starting the car in the morning I’ll get 20 or so Transmission errors over a few minutes, then in calms down. After that, if I have driven for a while, it seems like a bump or turn or incline can result in an error displaying, but I’m not sure if this is simply coincidence.

When turning the engine off, I always get Transmission Error -> Parking Brake Error -> HDC Error notifications (one of each in that order). Not had any issues with the ABS brakes kicking in since calibrating the steering angle which was off to the right.

Does this sound familiar to any one? Thanks! And thanks for the suggestions and input before (above).

15th Nov 2023 9:23 am

loanrangie

Member Since: 18 Jun 2017
Location: Melbourne
Posts: 606

Are there any error codes logged ?

16th Nov 2023 1:33 am