Warranty fault repair

[Penpons]

I have a 23 plate (May) MG4 Trophy LR that until recently has been working fine and good to drive, but a few weeks ago it suddenly developed a charging issue where it would stop charging after a few minutes, but only when using the AC charger at home (and also three public AC chargers I tried). DC Charging seems to work OK. I booked it into our local dealership where I bought the car on the 9th April and after an initial inspection they reported it was charging OK. However, I asked them if they could try an overnight charge to fully verify the system. This time the charging stopped after a few Kwh were added. The same happened when they used their own cable and agreed there was a fault. I rang them today to see what progress there had been and was told that the problem had to be reported to MG China for a response before they could go any further. I'm not sure if this is a common response for other forum members, but it surprised me that the level of in depth diagnosis capability and autonomy the dealers have to rectify faults on their own must be fairly low. Incidentally, the Weather App ,which has never worked despite several infotainment updates, has also been reported to MG for a response. They've had the car two weeks now and there is no end in sight for this problem, nor is there any chance of a courtesy car until mid May. Have others had similar experiences with dealerships?

 

[siteguru]

Search this board for CCU issue. It's a well-known problem for earlier cars with the 3-phase onboard charger. The only solution is a new CCU. (Apart from a couple of people who've had the issue resolved by software updates - that's what's tried first anyway, but the vast majority require new CCU hardware to fix it).

 

[Penpons]

Thanks, I had an idea I'd seen something about the issue elsewhere in the forum

 

[fshuk1]

They always ask China. I think it is partly for solutions but mainly to get the OK to do it under warranty.

 

[Tight Git]

Dealer will be instructed by MG to do software updates first, before being authorised to replace the CCU.

 

[Ian Key]

Mine's going through the process at the moment. They've tried the software update a month ago and it's going in again this morning and they are keeping it overnight so they can do the report for MG who will then approve the CCU replacement.

They've had the car two weeks now and there is no end in sight for this problem, nor is there any chance of a courtesy car until mid May. Have others had similar experiences with dealerships?

I don't know why your dealer has kept the car. I've been using mine although I've been paying an extortionate amount on public chargers

 

[Penpons]

Mine's going through the process at the moment. They've tried the software update a month ago and it's going in again this morning and they are keeping it overnight so they can do the report for MG who will then approve the CCU replacement.


I don't know why your dealer has kept the car. I've been using mine although I've been paying an extortionate amount on public chargers

Thankfully we still have our ice car and we don't need to have it back just yet. It's also better than ferrying it back and forth to the dealers. It is having its second service done as well.

 

[Kithmo]

Oh dear, is it time to get shut of mine while it's still working ?
I don't see why dealers have to contact MG China for warranty issues, why can't MG UK authorise repairs ?

 

[Ian Key]

Mine's going through the process at the moment. They've tried the software update a month ago and it's going in again this morning and they are keeping it overnight so they can do the report for MG who will then approve the CCU replacement.

Update 1:

After taking the car in at 8:30 Wednesday morning they didn't start looking at my car until 3:30 in the afternoon. (Why do dealers do that?) I guess they then reloaded or updated software over the next hour as I got 10 fault notifications on the iSmart app.

The car was then put on charge overnight to see if updating the software had worked, which it hadn't. But they have found a fault on the high voltage side of the CCU. MG have been contacted to approve the repair which can take up to 24 hours. Meanwhile I've got the courtesy car until mine is repaired which implies the part need is readily available.

As a side note. Those of you who have fallen out of love with your MG4 get a Fiat 500 hybrid as a courtesy car and the MG wont seem such a bad car after all.

 

[hardyperennial]

I had the same issue last year and had my CCU replaced (eventually), they had my car for 2 weeks though as they had to prove to MG that it wasn't a anything else or a software issue.

As a side note. Those of you who have fallen out of love with your MG4 get a Fiat 500 hybrid as a courtesy car and the MG wont seem such a bad car after all.

I was given a vauxhall e-Corsa and that made me really appreciate my MG4 when I got it back.

 

[Ian Key]

Update 2:

MG now want the dealer to take the CCU from a known working MG4 and install it on mine, run a few more tests to definitely prove that it's the CCU on my car that's faulty and nothing else. The dealer then has to inform MG of the result and wait for the go ahead to order and fit a new unit.

This could take a further two weeks if I left the car with the dealers. I've opted to have my car back between each stage. This will increase the overall time it takes to get this sorted but as I'm using my own insurance to cover the courtesy car it only covers it for a week at a time. Plus I can't even get one greyhound in the back of the Fiat 500 courtesy car never mind two.

I did ask the receptionist if they have the same problems with Fiat as they have a Fiat franchise too. He said they were nearly as bad but they have a lot more MGs having warranty work but MG had a 7 year warranty and Fiat only a 2 year which can be extended to 3.

 

[Mickky]

I have a 23 plate (May) MG4 Trophy LR that until recently has been working fine and good to drive, but a few weeks ago it suddenly developed a charging issue where it would stop charging after a few minutes, but only when using the AC charger at home (and also three public AC chargers I tried). DC Charging seems to work OK. I booked it into our local dealership where I bought the car on the 9th April and after an initial inspection they reported it was charging OK. However, I asked them if they could try an overnight charge to fully verify the system. This time the charging stopped after a few Kwh were added. The same happened when they used their own cable and agreed there was a fault. I rang them today to see what progress there had been and was told that the problem had to be reported to MG China for a response before they could go any further. I'm not sure if this is a common response for other forum members, but it surprised me that the level of in depth diagnosis capability and autonomy the dealers have to rectify faults on their own must be fairly low. Incidentally, the Weather App ,which has never worked despite several infotainment updates, has also been reported to MG for a response. They've had the car two weeks now and there is no end in sight for this problem, nor is there any chance of a courtesy car until mid May. Have others had similar experiences with dealerships?

This is a known fault with the 23 trophy mine and several others developed this fault after a few months. It needs a new charge control unit.