MG4 202022 Fast Charge

[Luke Atkins]

Hi
The Fast Charge on my MG4 Trophy EV is not working. It broke in November. The dealer have confirmed that there is an issue and are waiting for a fix from MG UK. Do other people have this issue? Despite chasing the dealer, they are unable to fix the issue or give me a date for a fix.
Any help or advise much appreciated.
Thanks

 

[siteguru]

What do you mean by Fast Charge? To me a Fast charge is anything from 7kW AC and upwards. Once you get to 50kW DC you're into the realms of Rapid charge, and then 150kW+ is Ultra Rapid. (Just trying to ascertain if it's a home charging problem or an On The Road [DC] charging problem).

What model year is your car? Does it have a single or 3 phase onboard charger? (You can tell by looking at the charge port - if there are metal pins in the L2 and L3 slots then it's 3-phase). If it's a 3-phase OBC then a CCU failure was quite common on those cars.

 

[Luke Atkins]

Hi
I mean rapid charger.
My car is an MG4 Trophy EV, 2022 registration. Here is a picture of my charge point. I assume it is 3 phrase - please confirm.
If it is a CCU failure what are the next steps.
Thanks

 

[siteguru]

That 2nd image shows pins in the L2 and L3 slots, so yours has a 3-ph OBC. This sounds very like the CCU failure issue .. this is well-known, and means a new CCU (from memory). Some others here (like @tsedge) have had this very issue and had it resolved; mine is an SE SR so single phase so I can't give a chapter and verse answer, sorry.

Search this forum for CCU might throw up relevant threads, such as:

Thread 'Issue with AC charging/New CCU fitted (Phase One SE LR)'

Oct 31, 2023

Edit: Originally, I thought I had an issue with my Zappi not being able to charge the car, but after testing other AC charging points (cutting out after fifteen minutes or less) and contacting the dealer, I eventually found out it was an issue with the car, namely the charge control unit, which needed replacing. After a new CCU was fitted, the car now charges normally at home on the Zappi (AC charging), though a separate software update was needed to limit the car to 80% when doing such a charge on my SE Long Range. Without that software update, the car was ignoring the 80% limit and...

• FiferMG4
• ac charging battery ccu charger charging charging issue diagnosis easee electric electric vehicle electricity ev ev charging failure fault long range mg4 mg4 trophy slow charger software stops trophy trophy long range warranty zappi
• Replies: 777
• Forum: MG4 EV (2022 to 2025) Forum

• 

 

[aidan]

I'm having the same issue at the moment with my 7kw home charger. Rapid charging works fine. It's been back and forth to the dealer three times already. Luckily the dealer is only a couple of miles away.

I brought it in on Friday and they eventually confirmed there was a problem with charging on both granny and type 2 chargers. Initially they said it was all fine and tried to charge me over £200 for granny charging my car! They flagged the fault with the manufacturer(?) or somewhere central and needed to wait for a reply.

That reply came back the following Monday asking for some technical details from the car so I brought the car in again on the Tuesday for about half an hour then took it home. The dealer had a reply the same day suggesting some software patches.

On the Wednesday (Yesterday) they came to collect the car, did the updates they could (but it still doesn't charge) and dropped the car back. Now I'm waiting for the next stage.

I expect it will be diagnosed as a CCU failure and they will eventually replace the CCU, but this back and forth between the dealer and their overlords is tedious.

 

[siteguru]

I don't know why MG still faff about so much .. if it's an early LR car with a 3-phase OBC then there's a very high probability that it's a CCU fault.

 

[Luke Atkins]

I took my car to the garage and told them that according to the forum it was a CCU fault. The garage then booked it in to try and fix it - didn't say that they were going to replace the CCU. The appointment is next week. Hopefully it will work. Not very impressed. The garage should be telling me what is wrong, not me telling them!