New MG4 Trophy LR Vehicle Control System Fault

[beard9982]

My wife has just had this exact issue on her week old Trophy…

Vehicle Control System Fault​

Typical that the error appears on a Friday evening. Have done the 12V disconnect - didn’t work, and the biggest issue with the error is it shuts off the HV, so it won’t charge.

Assume next step is the dealer?

@figgles - did you have any further issues after your software fix?

Same here, picked up trophy LR on Friday 28th now in the garage. They told us a full software install is needed, the version was ending in 40. I belive 63 is the latest release from other threads.

New (18 inch wheeled} MG4 Trophy LR, picked up 7 March 25

10 March 25 Intelligent Speed Assistant stuck at 40 MPH [thought it was the low sun] same on the way home - cleared next morning.
13 March 25 Had a Vehicle control system fault after its first charge in my ownership [ to 100%] - but cleared on its own after a few seconds.
14 March 25 - Car Not used
15 March 25 - Intelligent Speed Assistant stuck at 40 MPH, 10 mins later a Vehicle Control System Fault appeared, then a Camera module failure warning, then a few mins later ACC failure. Faults wouldn't clear when powered down or left for hours. Booked into MG Service
16 March 25 - Charge kept stopping -Vehicle Control System Fault & Camera module failure warnings came up and caused the charge to stop.
17 March 25 - No faults in the morning and on the way to MG Service after work.
18 March 25 MG Service updated the firmware on various modules and during one of the updates it failed/crashed and now the Infotainment system won't come on and they can no longer communicate with the car to retry the firmware update.
19 March 25 - Waiting for MG Techs to review issue and advise on fix
20 March 25 - Still waiting.
Anyone had the same issue ?

I will let you know. Picked my TLR up Friday 28th reading 40 in 50 constant, next day fine. Sunday long range drive and charge at venue.
On return we got a system fault that clears and is reacurring.
Now in the garage. I noticed the software is out of date and the lane assist tried to take me off the road at a Y in the road.
the garage said they couldn't look at it for 2 weeks! As they were fully booked. They were recording the call so I asked them to confirm the car was SAFE to drive!
The booked it in straight after that.
If it is a software update, why it wasn't done as a pre delivery inspection I will never know.
I didn't even get a granny charger with it!
I will await the outcome and will be looking for some extras from the dealer as it may turn out they have failed me.

 

[Tight Git]

Same here, picked up trophy LR on Friday 28th now in the garage. They told us a full software install is needed, the version was ending in 40. I belive 63 is the latest release from other threads.

I will let you know. Picked my TLR up Friday 28th reading 40 in 50 constant, next day fine. Sunday long range drive and charge at venue.
On return we got a system fault that clears and is reacurring.
Now in the garage. I noticed the software is out of date and the lane assist tried to take me off the road at a Y in the road.
the garage said they couldn't look at it for 2 weeks! As they were fully booked. They were recording the call so I asked them to confirm the car was SAFE to drive!
The booked it in straight after that.
If it is a software update, why it wasn't done as a pre delivery inspection I will never know.
I didn't even get a granny charger with it!
I will await the outcome and will be looking for some extras from the dealer as it may turn out they have failed me.

They don't do a full software update on delivery as it will take them most of a full day to do and can be problematic and it is time consuming as a tech has to monitor the process.

From a cost point of view if 90% of the ones they deliver are fine then they only have to do a much smaller number so the owners have to find out which are the ones that need sorting.

 

[beard9982]

I work in software, and we too let our customers find our bugs!
So glad it wasn't an aircraft!!
when in the service dept, 3 others came in with similar faults!

 

[Diggsy]

I work in software, and we too let our customers find our bugs!
So glad it wasn't an aircraft!!
when in the service dept, 3 others came in with similar faults!

Lots appear to be having these issues so I’m wondering if there’s a software combination causing conflicts or something going on. Hopefully it’s that simple and not a batch of faulty parts

 

[Ian C]

I work in software, and we too let our customers find our bugs!
So glad it wasn't an aircraft!!
when in the service dept, 3 others came in with similar faul

So which company do you work for ?

 

[Diggsy]

Thanks. No idea what has caused that error. Hopefully nothing other than a software gremlin, but time will tell…

Just as a further update - no reoccurrence of this problem thankfully!

What I did notice though was that on finding the conformity certificate hiding under the boot shelf, the ‘brand new’ car delivered a few weeks ago was actually built in September 2023

 

[Rolfe]

Blimey!

 

[Diggsy]

Blimey!

Yep, was thinking similar! Also now wondering if the cars built then had any issues that the more recent ones don’t…

 

[Coulomb]

I believe so. I ended up with a January 2024 model, and was pleasantly surprised by the lack of problems with LKA etc. It seemed like it was worth the extra I paid compared to a 2023 model, though I was forced by availability. I still had the under-tray bulge though.

But I'm in Australia, and we seem to get different firmware here, so my experience may not be relevant to the UK.

 

[ReintjeWA]

I believe so. I ended up with a January 2024 model, and was pleasantly surprised by the lack of problems with LKA etc. It seemed like it was worth the extra I paid compared to a 2023 model, though I was forced by availability. I still had the under-tray bulge though.

But I'm in Australia, and we seem to get different firmware here, so my experience may not be relevant to the UK.

I mirror your experience, Jan 2024 build, mild LKA, undertray bulge. We went for a 24 model because they ran out of orange in the 23’s, guess that was a lucky circumstance. Apart from the bulge the car has been fine.

I wouldn’t be surprised if Australian software is different from other countries, apparently MG has a few of their utes driving around now to calibrate them to Aussie conditions. Shame they didn’t choose the electric version (LDV introducing that one this year) but MG is going for a diesel, with a hybrid next year.