Stuck on 30mph (speed sign recognition)

[macke]

Collected my new MG4 Trophy on the 17th and all seemed ok, but today while driving home, irrespective of the speed limit it’s stuck on telling me the speed limit is 30mph and restricts me to this. I can kick down and override it, but it then warns me of overspeed. I’ve contacted the dealer and they can’t look at it the 2nd of October. Anyone else had this?

 

[siteguru]

What mode are you in according to the top of the MG Pilot page on the big screen? (Click on the Car icon on the right to access those menus). If it is in Speed Limit mode, change it so that the Driver Assist System is ACC. (I can't remember exactly what they're called, but it's the top items on the MG Pilot page).

 

[Martinonline]

This may be associated with the latest MG4s, mine is MY22. So I can only advise generally.

Have you tried switching off speed limit sign detection?

You could disconnect the negative terminal of the 12V battery to reset the system and then you must follow the steering wheel/windows settings procedure - see the Wiki.

 

[OriginalBigAl]

You have most likely , accidentally pressed buttons which have activated the Auto speed control, is the top left hand corner of the drivers screen lit up like a Christmas tree . If it is that , then you can de activate it through the Pilot screen , and then like 99.9% of us, never touch it again. If you have not already you can download the user manual , either from MG or Mr. Siteguru . The second being most preferable as you can access loads of other relevant manuals as well. Search Box... Siteguru Manuals. ..... and some thing with links should come up. Although , I'm guessing ...give it two minuets.

 

[macke]

Ok I’ll take a look at those items, I was on the second one on MG Pilot, which is Speed Limit Assist, When it did this I pulled and turned this to off, but it made no difference, it still stayed at 30. I was in a 30, which then went to 40, 60, 40, 60, but into wouldn’t move past 30.

 

[macke]

I got back into the car and got a message that Forward Safety System was unavailable. I tried setting it to AC and it said this was also unavailable. I then set it to Speed Assist Mode. It then seemed to be ok. It must be something I did or possible a dicky connection to the front camera or radar. I’ll monitor it for a few days.
Thanks for your help.

 

[macke]

You have most likely , accidentally pressed buttons which have activated the Auto speed control, is the top left hand corner of the drivers screen lit up like a Christmas tree . If it is that , then you can de activate it through the Pilot screen , and then like 99.9% of us, never touch it again. If you have not already you can download the user manual , either from MG or Mr. Siteguru . The second being most preferable as you can access loads of other relevant manuals as well. Search Box... Siteguru Manuals. ..... and some thing with links should come up. Although , I'm guessing ...give it two minuets.

Thank you, I don’t seem to have that icon in the top left.

 

[nogbad]

Thank you, I don’t seem to have that icon in the top left.

Jerry Pan is your mate on stuff like this

 

[tsedge]

Speed Limit mode on Manual is quite useful, I use it fairly often as an alternative to ACC (which is a bit twitchy and tentative) and being able to quickly and smoothly switch up and down the speed limit works well for me - plus it focuses me on better noticing limit changes.

 

[pjmmk]

Speed limit recognition on my XPower is completely useless. It has no concept of national speed limits, that's 90% of the roads in my area. I turn it off every time I get in the car and rely on actually knowing what the limit is (!) and Waze which is almost always right - so we know it can be done...

 

[siteguru]

Since my last round of software updates, when my car sees a NSL sign it simply sets the detected speed to --- such that it doesn't try to make a distinction between single and dual carriageway sections. I find this a much better implementation.

 

[Kithmo]

I've had my Trophy over two years now and I didn't know this limiter thingy existed, not that I'd want to use it anyway.
Mine just gives a quiet beep and flashes the speed sign if I go over.
Every day is a school day.

 

[nogbad]

I've had my Trophy over two years now and I didn't know this limiter thingy existed, not that I'd want to use it anyway.
Mine just gives a quiet beep and flashes the speed sign if I go over.
Every day is a school day.

Jerry told me about it when I got the car, it's not my cup of tea. I've used this on previous cars, where it was simple switches on the steering wheel, but faffing around changing things on the main screen to turn off ACC and then set this to manual, is more than I need to be doing - I prefer the ACC method

 

[fshuk1]

Collected my new MG4 Trophy on the 17th and all seemed ok, but today while driving home, irrespective of the speed limit it’s stuck on telling me the speed limit is 30mph and restricts me to this. I can kick down and override it, but it then warns me of overspeed. I’ve contacted the dealer and they can’t look at it the 2nd of October. Anyone else had this?

I think you are referring to this

L

Thread 'MY24 annoying signal recognition bug'

Sep 3, 2024

Hello,

my first post there, not native english speaker, so I hope to get all right.

I'm from a month a proud owner of a Luxury64 MY24, and wile the car is truly awsome on any regard, is plagued by a quite annoying bug: when you start it for the first time speed signals recognition just lock on 50km/h.
I couldn't replicate this glitch on any other situation and the only workaround (over turning ISA off) is to lock the car, waith 30ish seconds and restart it.

Now, on MY24 the intelligent speed assistant is active by default at the start, and being a mandatory safety feature by the new...

• Lord Randall
• annoying bug mg4 recognition signal
• Replies: 50
• Forum: MG4 EV (2022 to 2025) Forum

The solution he proposes works. But that is a work around. If anyone gets MG to fix this please tell everyone.

 

[girl on the heill]

Collected my new MG4 Trophy on the 17th and all seemed ok, but today while driving home, irrespective of the speed limit it’s stuck on telling me the speed limit is 30mph and restricts me to this. I can kick down and override it, but it then warns me of overspeed. I’ve contacted the dealer and they can’t look at it the 2nd of October. Anyone else had this?

I have this same issue and after reading posts - try checking if it works when you drive off as opposed to reverse first move. One works if I put into drive first thing but if I reverse off my drive it doesn’t change.

 

[Tig170]

... it just interprets what it sees via the windscreen camera on a temporal & spatial basis in real time... it only gives you a guide which you can easily miss, for instance in recent days my local town installed 20mph signs (I did think, am I in Wales ), but the MG4 was a useful tool to tell me that the speed limit was now 20mph (Waze/Google & Apple maps are still behind)

 

[ReintjeWA]

I ignore the speed recognition system most of the time, but do use it occasionally in the sense of asking the car “what was the last speed limit you think you saw?” and using that as a little tidbit of information. Like asking a passenger. I wouldn’t just blindly follow what it says though.

 

[redwood98]

Collected my new MG4 Trophy on the 17th and all seemed ok, but today while driving home, irrespective of the speed limit it’s stuck on telling me the speed limit is 30mph and restricts me to this. I can kick down and override it, but it then warns me of overspeed. I’ve contacted the dealer and they can’t look at it the 2nd of October. Anyone else had this?

There is a traffic recognition option in the infotainment car settings, I would turn it off there and back on.

 

[Roger001]

Once in a while, my speed limit indicator also goes haywire. So far I've seen two different issues that maybe

• A software bug where the software handling the indication just gives up until the car's power is removed from whichever control unit handles this feature. So basically a Ctrl-Alt-Del reboot.
• The glass in front of the forward-facing camera steams up, and so the car loses forward-facing vision. This results in no new updates to the speed shown, but it can clear itself while I'm driving if I increase the heating/fan speed.

In many ways, the camera and its software shows the problems with the UK road signage as driving down a dual carriageway, the off-ramp speed limits are often reported or even better in a 20 mph zone, it goes and reads a lorry's "This vehicle is limited to 50" sticker.

 

[fshuk1]

I think you are referring to this

L

Thread 'MY24 annoying signal recognition bug'

Sep 3, 2024

Hello,

my first post there, not native english speaker, so I hope to get all right.

I'm from a month a proud owner of a Luxury64 MY24, and wile the car is truly awsome on any regard, is plagued by a quite annoying bug: when you start it for the first time speed signals recognition just lock on 50km/h.
I couldn't replicate this glitch on any other situation and the only workaround (over turning ISA off) is to lock the car, waith 30ish seconds and restart it.

Now, on MY24 the intelligent speed assistant is active by default at the start, and being a mandatory safety feature by the new...

• Lord Randall
• annoying bug mg4 recognition signal
• Replies: 50
• Forum: MG4 EV (2022 to 2025) Forum

The solution he proposes works. But that is a work around. If anyone gets MG to fix this please tell everyone.

My car was fixed !!!!!!!
Went for service and I was told they updated a lot of software (it was taking so long that they kept the car overnight).
The speed recognition now does not stick anymore.