Hello. I have the exact same problem with my sprinter. Before i spend 1200 quid could you have a look at it for me please?

We wait long long and long time to get your video sir😊

How many hours did that take?😮

top

Is it possible to replace this tube without removing the engine and electric power steering?

One day people will realise that posh cars are no more reliable than every other manufacturer. Just more expensive to repair.

Some job that is mate not for the faint hearted 😅

Great video, real helpful!!!!!

I had similar error messages with my 2018 C350e and Mercedes Benz diagnosed that to be a faulty Aircond compressor issue.

If one of the resistors is in the ecu why does the scope wave form look good with only the other 120 resistor?

HI Mate- very good - please help me - i have 2016 c350e- please advise if we can stop the car from using battery after a certain percentage, as my car shows a glitch(knocking and manual gear shift stops) after the battery is too low.( hybrid battery)

I've got the same issue except mine isn't intermittent and I cannot clear the fault using my Autel maxisys ultra EV although I cannot test the HV pack as Autel don't have mg on their list....

Very good video - well explained - pity the spares are on long back order.

great video

Does MG cover the costs?

Great work 👍👍👏👏

All too easy to say what do you expect from China crap, but looks not too bad to me and as you say the Nissan leaf was similar, but OK if you want spend twice as much on an Audi or BMW go ahead.The fact that you have opened up Audi and other european makes show they also have problems. Thanks for showing this repair, it will become a growth industry, you are in the right place

It was great to see the "inside" of the MG battery Pack, and to also watch the examination of each Cell and the Insulation Testing. However, I am no expert, but thought that anything over 20M Ohms would be OK. My biggest concern was those Plastic Unions (inside of the battery Pack), and the Coolant that flowed through. I honestly think that the Inlet & Outlet should have (perhaps) undergone some Pressure Testing, and I am thinking that 1 Bar should be sufficient - since this is a low-Pressure System. The dampness found inside that battery Pack will definitely shorten the Battery Life, as cathodic corrosion takes over. Many EVs will need to drive on flooded roads - and survive with their Battery Packs potentially fully immersed! Thankfully, I own a '71 EV Beetle, with both Battery Packs way up high, at 750mm above Road Surface level. At least the Owner of that MGEV can see the work entailed in getting down to the problem. Greetings from Australia.

1/4 1000v socket set Laser Tools 6145

Interesting and complex work. I can see this becoming specialist work with all them new models coming on.

**Assuming the insulation tester is using AC** and not being affected by the DC from the battery, there is no point isolating and testing insulation on individual batteries, as all leakage will be in parallel, and any resistance on a particular cell will be teh same or higher than that of the pack as a whole, though it may help in locating where leakage is occurring.

Great video - thank you. The shocking thing to me was that a front spring had broken on a 2019 car. It cements my view that I wouldn't touch an MG with a bargepole. I've seen similar build quality problems with Tesla. Are Volvo any better because they, too, are Chinese built these days. I currently drive a Skoda and, so far, it's been fault free.

Thank you! Had the exact same issue, now my Golf GTI runs as good as ever again! 🎉

Great video - thanks. No need to measure insulation resistance to both polarity terminals on each module as they are connected via the internal cells. Also personally I would use rubber gloves when working with an insulation tester that generates over 500 volts.

Thanks for this. I have a ZS EV and good to see things can be sorted if need be. I have little faith in MG themselves.

Great video, but you didn't check that the bottom of the batteries were dry before refitting!

another quality Chinese flame thrower battery pack. stay safe ..

One EV to avoid: I test drove one, managed to crash its software 3 times on the road. Sure they fixed that but overall it is designed to be dumped past warranty. Lucky you managed to save this one.

It proves to me that you and your team are the trailblazers in fixing EV batteries, dispelling the myth that, you must purchase a complete unit. In a few years time, many motor shops like yours will be springing up offering to repair defective EV cells. I did wonder if the pink pads under each 22.2 volt cell had reacted to water ingress. iPads and iPhones have a tell tail moisture sensor similar to what you have there. I would have been tempted to lift another cell from the next bank just for curiosity. It’s a shame that any of the internals can’t be purchased from MG directly. The underbody protection was almost none existing. That’s going back to the days when manufacturers didn’t even bother with any type of rust protection. A very interesting watch! MG should be ashamed of the standard build quality in my opinion.

Great video thanks for taking the time

Thank you for this insight. Good to know. So this battery is non-serviceable in the sense of that internal parts cannot be ordered. Apparently there's no moisture ingress sensor and the seal fails before the battery itself is EOL. I think I'd also inspect the BMS boards and cabling for moisture damage. Or at least, to see if I'd be happy with the BMS moisture protection. For peace of mind. You know. I mean, they failed to get the sealing right. Who knows what else could go wrong with that battery.

What a great video, thanks for sharing

Great video Gary. Bit of a poor design and quality control really but good for your business i suppose !! The Insulation tester looks a good bit of kit

Plastic coolant pipes inside a hv battery 😂 not asking for trouble ,much

Don't the high voltage battery have a 7 year warranty?

Any chance the car had been in RTC to affect the battery seal?

Great video as always ❤

good video. thanks

Great video thanks for sharing. Did you re use the original gasket or apply another kind of sealant to the battery cover?

Those gloves look like they need replacing! Good video!

One of the best diagnostic repairs and explanation on KZbin of all time. Thank you.

Perhaps the EV fans that say an EV is so simple there is nothing to go wrong should have a look at this.

Don't look for protection from plastic or the electric car bomb 😂

Battery seals are going to be a disaster in places they use corrosive ice melt on the roads.

How are you supposed to buy a second-hand EV with hidden issues like this.

I assume the battery on this is out of manufacturers warranty 😩

What a polluting demential garbage...

Hi Im hoping you can help me I have the same vehicle it has got a P1B41 hv battery isolation fault and also p1b07 hv battery fault it was a flood damage vehicle I read on a mg forum that the hvmodule has to be replaced in battery pack not sure which unit that is?if you could help me I would be grateful Also your location details. Ta

Chinese have started flooding the market with cheap electric cars...this is a perfect example of what cheap gets you. Plus my experience is even the genuine service parts are patchy to get quickly.

Oh, in England they have different rules? Good to know.