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giorgiop



Member Since: 22 Feb 2025
Location: Bergamo
Posts: 2

Italy 2019 Range Rover Vogue SDV6 Corris Grey
Problem with TCU ?

Good morning, I'm bothering you with a problem that despite repeated searches I haven't been able to solve.
Here I found similar topics and expert answers and I hope you can help me. My RR Vogue 2019 sdv6 I think has a problem with the TCU...
- wifi not working no IMEI no MAC
- vehicle software without version
- SIM (under the armrest) not working
- USB (for music under the armrest) not working/deleting
- parking sensors slow to turn on
- rear camera most of the time the green/yellow/red lines don't work
- tire pressure message present at every start
Fortunately the Motorola MA1 Android USB module under the armrest works for now!
I also went to an LR dealer and after the diagnostics he told me that I should replace 2 control units for the modest sum of €4500... does that seem strange to me!?
What do you think?
Do you know the spare part code of the TCU for my RR, is it under the steering wheel?
Thank you for your patience and any advice is welcome
Giorgio from Bergamo
PS. I hope it is readable... it is the work of Google Translate

Post #712594 23rd Feb 2025 12:42pm
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stan
Site Moderator


Member Since: 13 Jul 2010
Location: a moderate moderated moderator moderating moderately in moderation
Posts: 35696

United Kingdom 

welcome to the forum..

first thing to do is to check your battery....a low voltage battery could be the cause. ... - .- -.




Y. O. L. O.
.

Post #712598 23rd Feb 2025 12:49pm
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giorgiop



Member Since: 22 Feb 2025
Location: Bergamo
Posts: 2

Italy 2019 Range Rover Vogue SDV6 Corris Grey

Stan, thank you for the welcome and the advice, I will take care of it as soon as possible... even if I think the problem is elsewhere.
I'll keep you informed, who knows, maybe it might be useful to others.

Post #712723 24th Feb 2025 9:47pm
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robmeister1969



Member Since: 20 Apr 2025
Location: Surrey
Posts: 14

United Kingdom 2018 Range Rover Autobiography SDV6 Corris Grey

How did you get on? I’ve just bought a very similar cr with very similar problems! Current > FFRR 2018 3.0 SDV6
Past > RRS 2015; RRS 2005; RRS 2007

Post #717663 9th May 2025 7:31pm
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jimmie



Member Since: 19 Jul 2014
Location: Warsaw
Posts: 178

Poland 2004 Range Rover Vogue 4.4 V8 Epsom Green

none of these malfunctions are related to TCU.
I bet faulty is IMC and / or ISC

Post #717667 9th May 2025 10:34pm
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robmeister1969



Member Since: 20 Apr 2025
Location: Surrey
Posts: 14

United Kingdom 2018 Range Rover Autobiography SDV6 Corris Grey

Update on my situation.

My Wi-Fi and SIM card have not been working on my Range Rover which I recently purchased secondhand. Tried various resets without success.

Purchased a secondhand TCU from eBay for £50 . Switched out the TCU and found that Wi-Fi worked fine. Did try a couple of SIM cards from my mobile phones. Not sure if there were specific issues with the SIM cards, and didn’t mess around with them too much but they were not working but did seem to make more progress than before the TCU swap. Think they might need to be left alone for an hour or 2 to pick up a signal?

Used my scanner to try to adapt the secondhand TCU to my VIN, but it doesn’t have that function. Notwithstanding, thought I would see how I get on with the secondhand TCU, but then of course discovered that the smart key was not recognised. Needed to switch back to the original TCU and unfortunately the Wi-Fi problem came back. Also, with the Wi-Fi working on the secondhand unit, I did try for software updates but there weren’t any available.

So I’ve confirmed what the issue is, but not solved it as yet. I have read a couple of posts that suggest that Land Rover now have a software fix, but I need to give them a call to see if that is the case. Current > FFRR 2018 3.0 SDV6
Past > RRS 2015; RRS 2005; RRS 2007

Post #718613 26th May 2025 12:53pm
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alanm_3



Member Since: 19 Feb 2011
Location: my House, unless I’m not at home, in which case I’m somewhere else.
Posts: 6793

Scotland 2017 Range Rover Autobiography SDV8 Loire Blue

Does anyone know if the Gap tool can reprogram the TCU? Got - 2017 SDV8 Autobiography in Loire Blue
Had- 2008 TDV8 Vogue SE in Java black
Had - 2007 S/C in Stornoway Grey

Post #718617 26th May 2025 1:24pm
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robmeister1969



Member Since: 20 Apr 2025
Location: Surrey
Posts: 14

United Kingdom 2018 Range Rover Autobiography SDV6 Corris Grey

Click image to enlarge

I suspect not (but don’t know) - I suspect it’s a Pathfinder job.

Seen this elsewhere (see photo).
Click image to enlarge
 Current > FFRR 2018 3.0 SDV6
Past > RRS 2015; RRS 2005; RRS 2007

Post #718622 26th May 2025 3:24pm
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Rio



Member Since: 03 Jun 2024
Location: Albi
Posts: 24

France 

alanm_3 wrote:
Does anyone know if the Gap tool can reprogram the TCU?

Same problem as you on MY 19

I have an iidtool and asked gap diagnosis, they couldn't do it yet, it was 1 year ago.

I have "wi fi unavailable" SIM card impossible to uncheck "data unavailable" and a "G crossed out" at the top right of the screen.

I tried to remove the fuse from the TCU for 48 hours to reset but it didn't work.

The dealer offers me to uninstall and reinstall the software.

I haven't done it yet.

Post #718681 27th May 2025 4:03pm
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robmeister1969



Member Since: 20 Apr 2025
Location: Surrey
Posts: 14

United Kingdom 2018 Range Rover Autobiography SDV6 Corris Grey

I think an uninstall/ reinstall might be the way to go. I found these when searching for LR TSB's:-


Click image to enlarge


Click image to enlarge
 Current > FFRR 2018 3.0 SDV6
Past > RRS 2015; RRS 2005; RRS 2007

Post #718682 27th May 2025 4:27pm
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Rio



Member Since: 03 Jun 2024
Location: Albi
Posts: 24

France 

Thank you very much,

Post #718683 27th May 2025 4:31pm
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