CRUISE CONTROL just STOPS WORKING for no reason

[JIS]

So my MG4 64kw Luxury 2024 has some 22,000 km. Two months ago, when using ACC set at 80kph (the limit on standard roads in France) it suddenly turned off. I thought it was something I had done but no. This has now become a regular event, the road ahead clear, daylight conditions, and cruising along at 79/80 kph and then suddenly ... it de-activates for absolutely no reason that I can see.
So today we had the first service (but it had had two prior software updates, the last being in July this year, around the time this started !). I mentioned the issue to the workshop but the mechanic reported no issues and that all tested normal.
Have any of you experienced this and, if so, what was the solution. (We are off to Spain next week where a great deal of cruise control is expected !)
Thanks
John

 

[JIS]

Update : I took the car back to the MG dealer this morning. Getting there resulted in two separte de-activations of the cruise control. The technician suggested that it may be the fact that I use an
OBDLINK CX Bimmercode Bluetooth 5.1 BLE OBD2 Adapter to send data to the ABRP app. However, I said that this device is OFF for all except LONG journeys where I use ABRP. Apart from that, I use WAZE. The technician suggested that even with the device OFF, the fact that it's connected can cause internal "interference". I unplugged it and drove home without any interruption of the Cruise Control.......
It is not ideal but knowing the source of the problem is good to know.
The fact that no one has responded to this thread suggests that perhaps I am alone using the OBDLINK CX Bimmercode Bluetooth 5.1 BLE OBD2 Adapter with their MG4 ?!

 

[gary333]

So my MG4 64kw Luxury 2024 has some 22,000 km. Two months ago, when using ACC set at 80kph (the limit on standard roads in France) it suddenly turned off. I thought it was something I had done but no. This has now become a regular event, the road ahead clear, daylight conditions, and cruising along at 79/80 kph and then suddenly ... it de-activates for absolutely no reason that I can see.
So today we had the first service (but it had had two prior software updates, the last being in July this year, around the time this started !). I mentioned the issue to the workshop but the mechanic reported no issues and that all tested normal.
Have any of you experienced this and, if so, what was the solution. (We are off to Spain next week where a great deal of cruise control is expected !)
Thanks
John

Mine does this at least once every journey on the motorway (my journeys are usually 100 miles or so).

Seems to be no reason for it, and no obvious solution to stop it happening. Your issue isn't unique as I have seen many people mention the de-activation for no apparent reason on here.

 

[NLMGSAN]

Does it happen after LKA warnings? Does it happen if cars rapidly overtake you in the adjacent lane?

 

[Roger001]

The MG4 does have some sort of feature that will disable ACC, but I've never seen it documented. I have had ACC turn off twice in the last 2 months, both times I hit deep standing water while driving at speed (the UK has been rather wet this year and our roads don't seemed to be now designed for rain!), and as the car slowed the ACC disengaged.

 

[JohnV6]

I had it happen on my zs ev. The garage did a software update

 

[NLMGSAN]

John, did it solve it?
These triggers are rather rare. Were there other moments the ACC simply stopped?

 

[Rolfe]

The MG4 does have some sort of feature that will disable ACC, but I've never seen it documented. I have had ACC turn off twice in the last 2 months, both times I hit deep standing water while driving at speed (the UK has been rather wet this year and our roads don't seemed to be now designed for rain!), and as the car slowed the ACC disengaged.

I had to turn mine on actively when I got the car. Presumably it can be turned off the same way.

 

[JohnV6]

John, did it solve it?
These triggers are rather rare. Were there other moments the ACC simply stopped?

So fr so good after a few weeks. The workshop said it can be very sensitive on ZS I went up from the main R25 to R27 software but they also need to fix other other software upgrades to do this .