12volt battery low on MG3 Hybrid Trophy

[Radish]

I purchased an MG3 hybrid Trophy in July 2024, it has been fine since then but the last few weeks it shows 12V battery low when ignition switched on. I have contacted the dealership for an answer and am still waiting to hear. Anyone else had this problem and been given an answer ?

 

[Deleted member 18108]

I've not had any issue with the 12volt battery. It is a recorded issue with the Toyota Yaris mk4, when owners leave it sitting up for a few days, but I haven't heard of any issues on this forum. Have you had the battery tested? Have you hard wired a dascam or similar?

 

[Italy]

Hello,

Have you used the Ismart application to check the state of your 12-volt battery via the MG3 check?

 

[Radish]

I've not had any issue with the 12volt battery. It is a recorded issue with the Toyota Yaris mk4, when owners leave it sitting up for a few days, but I haven't heard of any issues on this forum. Have you had the battery tested? Have you hard wired a dascam or similar?

I have a dash cam but it is plugged into to usb socket behind the rear view mirror and is only live when the ignition is on.

 

[Radish]

Hello,

Have you used the Ismart application to check the state of your 12-volt battery via the MG3 check?

No I haven't yet where do I find this app ?

 

[evor]

MG iSMART connectivity system

MG's brand new connectivity system that integrates car, Internet, and user communication.

www.mgmotor.eu

Links for android and Apple in the article

 

[Paul225]

I purchased an MG3 hybrid Trophy in July 2024, it has been fine since then but the last few weeks it shows 12V battery low when ignition switched on. I have contacted the dealership for an answer and am still waiting to hear. Anyone else had this problem and been given an answer ?

Had major problem this week - returned to station car park to find my lights were on and car unlocked but no power - called MG recovery and after a couple of hours someone arrived at boosted the 12V battery - an electric car left beside me during g that time of waiting for help. Early in the morning I locked my car and the headlights were not on went I went off by train. It was 13 hours later that I returned. The dealer felt that the electric car beside me had a similar frequency on its keypad and after I parked the person arrived later - locked her car and set off a sensor on my MG putting the headlights on !! I got home ok but many apps said parts of my MG were not working - after plugging up for charge they returned to normal. Dealer said to charge up 12V battery which I did - it was registering about three quarters full. MG recovery not very helpful - said my cover had finished when the car was a year old - but dealer says it automatically renews after each MG service !!

 

[evor]

dealer says it automatically renews after each MG service !!

I thought same sure dealer mentioned it as a benefit getting service through them. Just searched and it says it on MG service page as well.

Service Schedules and Digital Records

All MG vehicles require servicing regularly. Our dealers guarantee: Trained MG technicians, service records, roadside assistance extentions. Learn more today.

www.mg.co.uk

 

[TEST DRIVER]

The dealers will probably use the old British Leyland excuse......"They all do that Sir".

 

[GTG]

I purchased an MG3 hybrid Trophy in July 2024, it has been fine since then but the last few weeks it shows 12V battery low when ignition switched on. I have contacted the dealership for an answer and am still waiting to hear. Anyone else had this problem and been given an answer ?

Yes. Called dealership. Arranged a battery check

 

[Jto]

Hi
Get a 12V charger from a car shop and charge up the battery using this and if it doesn’t hold a charge then it needs to be replaced.