Strangely my brand new (Dec 2020) MG HS PHEV Exclusive has very similar faults .
In fact have just picked up the car from MG Bushey to rectify the following problems who claimed to have fixed it and it is now worse than ever.
I have identified two levels of system crash:
1. A blank screen with data panel remaining along the top of the display and when navigation is selected on reboot it requires to be "reloaded" and the disclaimer "accepted".
2. System crash where the MG logo eventually reappears and the display is totally blank without the data panel at the top and then on reboot the selection of maps enquires the EULA to be accepted during the reload of navigation then the disclaimer to be accepted before navigation can be used. during this second level reboot the audio is completely dead for all functions including indicators.
Occasionally on start up the navigation system thinks I am on the left bank of River Seine in Paris near to Les Beaux Arts then corrects itself. It repeatedly does this but at random and always with the same misplaced location in Paris.
What truly astounds me is that MG dealer and service centre near Watford told me they had "driven the car to..... and taken it for a run" how nothing can be found at fault astounds me.
There is also the issue of the heater does not sense when the car has reached the selected temperature and keeps blowing out hot air - MG service centre said "I should just turn down the temperature" - that is not how climate control is supposed to work.....
I have to say this is a safety issue and a danger as a full level reboot whilst driving is distracting and at most dangerous because indicators may fail conversations drop screen blanks when manoeuvring in reverse .
I have a suspicion given that I have this in an HS and also the ZS is widely reported as having similar faults as well as, it seems, the MG6 that the software has bugs in it that either are untraced or cannot be fixed and MG are happy rolling out cars with faulty software.
The dealer that sold the car in Birmingham technical department said "it is the phone and some phones are not compatible with he MG system .... I should disconnect the phone". Really? Really? REALLY?
I have refrained farm naming the dealers that have been unable to fix the car - but may not be so kind next report. Incidentally was told software had been updated and connections checked the faults persist nonetheless.
Suggestions please?
Hi - Regarding the info unit blanking out.
I think I was one of the first people to post on this subject.
You are totally correct, it does appear to be a common issue.
Only last night I was reading on another forum, that other ZS EV owners are witnessing the same black out issue.
The frequency of these "Black Out's" do seem to vary a bit though.
Some people report one or two failures, others with many more.
Other people maybe getting them, but not reporting on them ?.
At the risk of repeating myself ( sorry ) this is the history of now my car has acted.
Collected the car on 6th Jan 20 and then out of the blue, a few weeks later I noticed that the info screen had just gone completely black.
The music was still playing, but the screen just blanked out.
After about 2 minutes, the coloured screen just reappeared and that was that.
I am unsure how many times this has happened over the last 12 months, but I would say about ........... 8 ( ish ) times ?.
It is really an odd one alright, the screen always blanks out first.
Sometimes it takes out the sound from the radio channel as well, but then returns. On about two occasions, it has completely failed and then it will reboot to the MG logo on the screen.
Last summer we where travelling back from visit to family and where using the built in Sat Nav for our return trip.
All was well until about 50 miles from home, when the head unit did the "Black Screen Of Death" thing.
Therefore, we had no visual map to follow, but the voice of the Sat Nav was still guiding us !.
When we arrived home, I powered down the car and waited a few minutes.
Then booted up again and the head unit restored itself back to normal.
I did mention this behaviour to my local dealer the other day, he said it sounds like a 12 volt battery problem.
I can't buy in to that theory to be honest, if it was a 12 volt problem you would see other evidence of the car displaying issues I think.
The load pulled by the head unit is low, when you compare it to the demand required to satisfy the other 12v components in the car.
Head lights / Wipers / heater blower motor / HRW etc.
Regarding the heater controls :-
Is it a basic manual controlled heater system ( like the ZS EV ) or is it a climate controlled system now on the new HS PHEV.
Probably the later of the two.
I only ask, because my previous VW PHEV had a full Climate Control and it did have a rather odd party trick.
Even if you had the Climate Control turned completely OFF - It would still continue to push hot air through the side vents into the cabin.
Other owners discovered the same issue.
This could be rectified by briefly firing up the HVAC - Then with the temperature control knob, crank the heat setting right down to LOW.
The HVAC could then be switched off again.
The system had a strange way of remembering the last setting of the temperature control and responded in the same manner, even if it was turned off.
It would allow heat to free flow through the heater that being fed with hot water from the cooling system of the ICE.
So in affect, you could be travelling along on a summers day and hot air was being pumped into the cabin via the fresh air vent, with the heater turned completely OFF.
As you thought !.
I have no idea if the HS has a remotely similar set up of course, but worth a quick check anyway.