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MG Electric Vehicle Enthusiasts
MG Electric Vehicle Enthusiasts
ChrisDCB
Standard Member
Hmmm - not sure about this. When it decides not to work, the compressor does not even try to start up. Might be a gas pressure issue… I am dropping it in to the dealer next week. Will keep you updated.
Try this…
Turn off the a/c before turning off (locking) the car. When restarting the car, wait until the Home Screen has completely settled down then turn on the a/c. Seems good so far… or it might just be magic!
CharlieT
Standard Member
That might work Chris, but I don’t feel I should be needing to turn the a/c off before I get out of the car every time just to ensure it actually turns on again the next time I get in! It’s just yet another thing MG needs to fix, but if it’s a rare fault then I doubt they’ll bother unfortunately.
ChrisDCB
Standard Member
Sadly - it didn’t work…. Tried the formula this morning and could not get a/c to start. Will see what main dealer has to say.
ChrisDCB
Standard Member
Well…. I was expecting a faulty pressure sensor or some such but they changed out the complete compressor…
Slightly weird that they had a spare one in stores. Perhaps they are expecting to have to do a few.
Slightly weird that they had a spare one in stores. Perhaps they are expecting to have to do a few.
CharlieT
Standard Member
Interesting. I emailed MG UK about it yesterday and they said it isn’t a known problem, and a dealership will need to investigate. My car isn’t going in until the very end of September unfortunately. I get the distinct impression they aren’t keen on doing warranty work. Another dealership near me said they couldn’t look at it until November!! ??
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ingobill
Novice Member
All of a sudden my fans in the air vents are not blowing. All vent sliders are open but not blowing any air. Setting set to max but air blowing. The air vent switch lights up and the mile range reduces by 10 miles but no air or cold air. It went in for a service last week and before that all ok. Came oput of the service and no air blowing. Might just a coincidence. Can advise, anybody?
amendment - Air not blowing went set to Max.
amendment - Air not blowing went set to Max.
habylab
Standard Member
Has this been fixed for you?
CharlieT
Standard Member
An update on my ongoing A/C issue. It’s been a year now since the A/C in my MG4 Trophy started to occasionally not work at all (air blowing but no cooling). Last October (2024) I took it to a local dealership and explained that it usually works fine, but occasionally it doesn’t, so could they please do some problem solving? After leaving the car with them for just a couple of hours they called to say that it’s working today so there’s nothing they can do (
). I battled on through the winter with the issue continuing to happen, but this Spring (2025) the problem started occurring increasingly frequently, and the warmer days meant I once again couldn’t bear it. I booked the car into a different dealership and crossed my fingers. After a long wait for the appointment (nearly 3 months) the car eventually went in. Luckily, the A/C didn’t work for them! I was so relieved! But the bad news is, they don’t know why! It was originally meant to be with them for just one day, but that turned to two, and then three, and now they’ve had my car for two weeks and are still going through a trouble shooting process with the technicians at MG UK.
If/when it does get fixed, I’ll let you all know what the issue actually was. In the meantime, I have a newer MG4 as a courtesy car - with working A/C!
). I battled on through the winter with the issue continuing to happen, but this Spring (2025) the problem started occurring increasingly frequently, and the warmer days meant I once again couldn’t bear it. I booked the car into a different dealership and crossed my fingers. After a long wait for the appointment (nearly 3 months) the car eventually went in. Luckily, the A/C didn’t work for them! I was so relieved! But the bad news is, they don’t know why! It was originally meant to be with them for just one day, but that turned to two, and then three, and now they’ve had my car for two weeks and are still going through a trouble shooting process with the technicians at MG UK.If/when it does get fixed, I’ll let you all know what the issue actually was. In the meantime, I have a newer MG4 as a courtesy car - with working A/C!
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Is the courtesy car's insurance being paid for by the dealer or are you using yours? If yours the dealers usually need it to be covered fully comprehensive so just check your cover. The reason I mention this is mine only covers a courtesy car for one week fully comp before reverting to third party.
And don't expect a speedy result when MG's technicians are involved.
And don't expect a speedy result when MG's technicians are involved.
CharlieT
Standard Member
A great point about insurance. The dealership wanted me to pay a £25 insurance waiver for the courtesy car, but my company insurance happily provides comprehensive cover for any courtesy or hire car while my car is in for service or maintenance. You did make me double check, but it’s all good!
As you say, I don’t think my car will be fixed anytime soon. They were originally going to replace the A/C compressor, but had to get permission from MG UK first as it’s warranty work. The technicians at MG UK asked them to run some different tests first, and then some other ones (on the high voltage system apparently). Each time the dealership does the tests as asked, it takes MG UK days to reply again, hence the time it’s taking. I’m not holding my breath. I just hope it does eventually get fixed once and for all. I’ll be absolutely raging if they give the car back to me only for the problem to reoccur…
PingMeMaybe
Novice Member
Interesting information CharlieT. My MG4 Luxury (with heatpump) A/C is also acting up. In my case it seems that sometimes when car is left to direct sunlight outside A/C compressor won't start. Blower works fine, just blowing outside air in.
This seems to never occur when starting from cool underground garage. Took car to dealer service center, they didn't find "anything wrong", but we were able to replicate the issue. They are now contacting MG for more information how to proceed.
This seems to never occur when starting from cool underground garage. Took car to dealer service center, they didn't find "anything wrong", but we were able to replicate the issue. They are now contacting MG for more information how to proceed.
CharlieT
Standard Member
That sounds like it may well be the same issue. The technicians are certainly scratching their heads!
RickDal
Novice Member
Same problen! Bought the car 6 months ago (2.5 years old) and last week air con stopped working, only blowing ambient air into the cabin. Phoned dealer and was told car would need regassing but not covered under warranty. A mere £150. Saw the comments in the forum and decided to try the fixes.
Opened the app and went to CLIMATE and turned it on. Opened the car and guess what, blowing full cold! Turned off aircon as suggested above and locked car. Just tried the aircon again and working fine.
Worth a try for those with the same problem.
Opened the app and went to CLIMATE and turned it on. Opened the car and guess what, blowing full cold! Turned off aircon as suggested above and locked car. Just tried the aircon again and working fine.
Worth a try for those with the same problem.
ASHTAD
Novice Member
Have the same problems on 2024 Se long range. My A/C has just stopped blowing any cold air at all. Will try the methods suggested. Next available appointment at my local MG dealer is 5 weeks away 
CharlieT
Standard Member
So it did eventually get fixed. The dealership had my car for 3 weeks while they corresponded with MG UK about how to sort it. In the end they just replaced the A/C compressor. And the system has worked without issue ever since. It’s taken me a year to get sorted!
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