MG4 in Australia

[clayton4115]

Yes the next service information is just a countdown to 40,000km but if you have less than 40,000km on the clock 2 years from the car being delivered to you and on the road, that is when the first service is due.

Ok thanks but I think I will go in April 2026 for the first 40k service as it was registered in April so it has been driven around even though not much, 1700 kms since new, built July 2023.

 

[wattmatters]

As anyone changed the 12v in their MG4 I see there is a large horizontal bar with bolts over the top of where the 12v is housed, with the inevitable 12v change of battery this looks like a pain in the as!e to change the 12v.

For some fun I asked the MG4 AI "How do I change the 12V battery?", this was the response:

To change the 12V battery on the MG4, follow these steps:

Battery Removal​

1. Remove the front compartment trim cover.
2. Disconnect the negative battery cable.
3. Remove the battery strap by unscrewing the bolt securing it to the battery tray.
4. Disconnect the positive battery cable:
   • Open the cover of the positive battery terminal.
   • Remove the nut securing the positive battery cable and detach it.
5. Remove the battery pressing plate by loosening the two bolts securing it to the battery tray.
6. Carefully remove the battery assembly from the tray.

Battery Installation​

1. Position the new battery onto the battery tray.
2. Secure the battery using lock blocks and tighten the bolts to 19-25Nm.
3. Reconnect the positive battery cable, securing the nut to 4-6Nm.
4. Close the cover of the positive terminal.
5. Fix the battery strap to the tray, tightening the bolt to 7-10Nm.
6. Reconnect the negative battery cable.
7. Perform the "Write Battery ID" operation using the diagnostic tool to ensure proper system recognition.
8. Reinstall the front compartment trim cover.

Important Notes​

• Always disconnect the negative terminal first and reconnect it last to prevent short circuits.
• Wear protective gloves and goggles, as the battery contains acid that may cause burns.
• Ensure the vehicle is powered down properly before starting the replacement.
• The new battery must be registered in the vehicle system using the diagnostic tool.

This procedure is based on the official MG4 service documentation. Let me know if you need further details!

 

[decrep]

registering the battery?????

 

[bacon]

Im with you ??? maybe a dealer job

 

[decrep]

just asked the AI.

Chat history​

Chat

Mg4 Tech Assist

You said:​

how to register 12v battery

​

You said:in english please​

ChatGPT said:To register the 12V battery on the MG4 EV, you need to perform the Write Battery ID procedure using the SIPS system. Follow these steps:​

12V Battery Registration Procedure (Write Battery ID)​

1. Set the gear position to "P" (Park).
2. Ensure the vehicle is turned off (the "READY" state should not be active on the instrument cluster).
3. Do not turn off the vehicle from the central screen.
4. Access the SIPS system and navigate to:
   • SIPS → Routine → Write Battery ID
5. Execute the battery ID writing process.
6. Leave the vehicle turned off for at least 4 hours to allow the system to properly register the battery state.

This procedure is required whenever the 12V battery or the electronic battery sensor (EBS) is replaced. Failure to complete this process may result in the system not recognizing the new battery and triggering errors.











ChatGPT can make mistakes. Check important info.

• https://chatgpt.com/g/g-67b65a23603...assist/c/67b73245-ff10-8000-aaec-35bd166d673d
  
  

 

[decrep]

Wow, that's complicated, just to change a battery. Obviously can't be done by just anybody

 

[decrep]

and here's the next question.
what is MG SIPS system

ChatGPT said:​

The MG SIPS (SAIC Integrated Program System) is an online vehicle programming and configuration system used for MG vehicles, including the MG4 EV. It allows authorized technicians to perform various diagnostic, programming, and configuration tasks by connecting to the vehicle's electronic control units (ECUs) through a networked system.

Key Features of the SIPS System:​

1. ECU Programming & Updates – Enables software updates and reprogramming of vehicle modules.
2. Vehicle Configuration – Allows changes in system parameters based on repairs or component replacements.
3. Battery Registration (Write Battery ID) – Used for registering a new 12V battery or the Electronic Battery Sensor (EBS).
4. Fault Diagnosis & Troubleshooting – Helps technicians diagnose and fix vehicle issues.
5. Secure Online Connection – Retrieves necessary files and vehicle manufacturing data directly from the MG/SAIC server.

How SIPS Works:​

• Requires an authorized MG dealer or repair center account.
• Uses diagnostic hardware and software to interface with the vehicle.
• Connects to the manufacturer’s server to acquire data for updates and configurations.

If you need to use SIPS for 12V battery registration or any other configuration, you must access it through an authorized MG service center.

 

[Phil]

Yes the next service information is just a countdown to 40,000km but if you have less than 40,000km on the clock 2 years from the car being delivered to you and on the road, that is when the first service is due.

As anyone changed the 12v in their MG4 I see there is a large horizontal bar with bolts over the top of where the 12v is housed, with the inevitable 12v change of battery this looks like a pain in the as!e to change the 12v.

Seems to maintain a good charge itself since Oct 23. Also parked for a total of 3 months in that time at airports with no effect on it.

 

[clayton4115]

Does anyone know how to get google to respond to you when you have android auto connected? When I click the top left button on the steering wheel it comes with the MG lady all the time even when I have android auto connected.

 

[ReintjeWA]

Does anyone know how to get google to respond to you when you have android auto connected? When I click the top left button on the steering wheel it comes with the MG lady all the time even when I have android auto connected.

Hold down the same button, if it’s similar to CarPlay/Siri anyway

 

[wattmatters]

When I click the top left button on the steering wheel it comes with the MG lady all the time even when I have android auto connected.

Yes, you need to hold the button down for longer.

 

[clayton4115]

Yes, you need to hold the button down for longer.

excellent, will give it a go next time I am in the car

 

[Corindikev]

All modern cars be they ICE or EV have numerous micro processors that manage multiple functions. In an EV the 12 volt battery is charged from the high voltage battery & not from an alternator via a voltage regulator and rectifier. The systems need to talk to one another in an EV to ensure the 12 volt battery is kept at its peak performance while it performs a lot more things than in an ICE vehicle like all of the lighting, air conditioning, vehicle management & entertainment systems etc and is always available at maximum voltage delivering peak Amps (current) when things kick in like HVAC.

So it makes sense that the car needs to know all about the battery that replaces the one it has been managing.

A normal ICE car battery is unsuitable as it is designed to provide peak Amps under cold conditions to turn the starter motor to get the engine running. An EV doesn't need this capability but does have an electrically driven compressor to start when the HVAC system is turned on and this can happen multiple times during the drive while also delivering power to everything else in the car except the traction motor.

An EV 12 volt battery is a cross between a ICE car starter battery and a deep cycle battery and the car has to know everything that is happening in order to manage its charging and discharge functions.

 

[Tuareg]

I had to registser the new 12V battery for my 2009 E91 (3 series estate/wagon) when I replaced it. Nothing new and I believe that this process has been around for more than 20 years on lots of cars.

 

[clayton4115]

Does anyone know when the trip computer resets? I see I go away for 20 mins and come back and the trip computer still shows my last trip time and consumption etc and not a new trip, I thought it would reset after 5 mns of the car being off?

Nothing in the manual that talks about it.

​

 

[Phil]

Does anyone know when the trip computer resets? I see I go away for 20 mins and come back and the trip computer still shows my last trip time and consumption etc and not a new trip, I thought it would reset after 5 mns of the car being off?

Nothing in the manual that talks about it.

It seems to me a bit random, I couldn’t put an exact time interval on it. I tend these days to watch the data from the last charge mostly these days.

 

[Phil]

Hi all. Not sure if there are any Aussies here but I guess I'll try.

So the MG4 EV just began selling in Australia 2 weeks ago. Took one for a test drive yesterday and really liked it. Looking to get the base model 51kW. Do we know if this batch is identical to the ones UK/EU got last year or they have made some improvements?

After doing some research, the issues that I am mostly concerned about are:

1. Some had deformed undertray beneath the rear motor. The ytuber said it is defect and covered under warranty. Can anyone in Aus with MG4 had a look at this and can confirm it has been addressed?
2. Jerky and potentially dangerous lane keeping assistance (LKA) that forced most users to turn it off. Has a patch rolled out that improved LKA or allowed you to turn it off permanently?

Any other feedback and people's thoughts are appreciated.

Edit: Since this thread is getting a lot of traction, I thought it might be a good idea for fellow aussies to share our honest initial experience with the MG4.

Undertray was fixed with no issues. LKA is what it is…I barely notice it these days (after 16 months of driving). Great little car for mine.

 

[Phil]

Also I assume the V2L cable will be an after-market purchase?

Yes

 

[Corindikev]

Does anyone know when the trip computer resets? I see I go away for 20 mins and come back and the trip computer still shows my last trip time and consumption etc and not a new trip, I thought it would reset after 5 mns of the car being off?

Nothing in the manual that talks about it.

​

Page 32 in the manual

 

[siteguru]

My real life experience is:

From Start trip resets each trip - as long as you've left the car idle (off) for at least an hour

From Last Charge resets when you next do a charge - although I've occasionally seen it forget to reset. When I'm on a trip and stop for a DC rapid charge/pit stop for me, the From Start trip can continue whilst the From Last Charge trip resets.

Accumulated Total trip resets when the counter reaches 100 hours of up-time, or when you manually reset it. It can also reset when software updates are being applied.