MG EV ZS 12volt battery

[Almo1954]

Can someone explain what purpose the 12V has. I started the car and a yellow warning icon appeared on dash display. The car would not drive so I had to restart again and presumed I had not held the ignition button long enough. The car then started as normal but this yellow warning light has appeared before on me. Any information would be grateful.

 

[webhiker]

Mostly just the same as for an ICE. Mentally just swap the fuel engine for the 400v battery and traction motor.
12V starts up the bigger 400V beast. Also all stuff that an ICE has is 12V based, thus can be reused in an EV running 12V.
Scale of economics.

 

[Ian Key]

All the car's systems run off the 12V battery just as they would in an ICE car. The main traction battery acts just like an ICE engine to make the car move and to charge up the 12V battery.

 

[Almo1954]

Mostly just the same as for an ICE. Mentally just swap the fuel engine for the 400v battery and traction motor.
12v status up the bigger 400v beast. Also all stuff that an ICE has is 12v based, thus can be reused in an EV running 12v.
Scale

Thank you.

All the car's systems run off the 12v battery just as they would in an ICE car. The main traction battery acts just like an ICE engine to make the car move and to charge up the 12v battery.

Many thanks.

 

[Ian Key]

@Almo1954 You might be better posting in the ZS EV forum as they will have more specific knowledge of your car

MG ZS EV Forum

Discussions and information about the original MG ZS EV and the refreshed SE, SE Long Range, Trophy and Trophy Long Range SUV electric cars from MG

www.mgevs.com

 

[Almo1954]

Thank you.

 

[Lovemyev]

I had not held the ignition button long enough. The car then started as normal but this yellow warning light has appeared before on me. Any information would be grateful.

A quick press of the "Stop / Start" button is enough to commence the start up process.
One thing that is really important, is that you keep foot pressure firmly applied to the foot brake and DO NOT release the pressure until you see the READY symbol in the dash panel and hear the ready bong !.
Releasing the pressure on the pedal early will cause problems in the start up process and can cause the car throw up warnings on the dash board that relates to the 12 volt system.

 

[pecker]

@Rolfe Can this discussion be moved to the ZS forum please where it will be more useful,

Thanks

 

[Almo1954]

A quick press of the "Stop / Start" button is enough to commence the start up process.
One thing that is really important, is that you keep foot pressure firmly applied to the foot brake and DO NOT release the pressure until you see the READY symbol in the dash panel and hear the ready bong !.
Releasing the pressure on the pedal early will cause problems in the start up process and can cause the car throw up warnings on the dash board that relates to the 12 volt system.

That's really useful information. Thank you.

 

[Coulomb]

Can this discussion be moved to the ZS forum please where it will be more useful,

Done.

 

[AAA mileage club]

Yes, I also thought there was something wrong with the car until I learned - and remembered - to press down the brake pedal before pressing the start button.
The different modes of "on" is confusing, I think, and seem somewhat redundant. But maybe it makes sense in Chinese. In dinosaur cars and especially those a bit older, the key can be ACC, ON, Start. It works and does not involve pedals (unless you start the engine while in gear).

 

[Tim Green]

No, having to press the brake pedal is a useful safety feature. Otherwise any child or adult could initiate start without that intent.

 

[MG steve]

I thought other car manufacturers with a start button required a brake pedal press too.

 

[Bodgerx]

Some EVs now have no start button. Once it is unlocked it's ready.

 

[Slipstream]

@Rolfe Can this discussion be moved to the ZS forum please where it will be more useful,

Thanks

Thought this forum was for MGZS owners not just MG4 owners.

 

[AAA mileage club]

No, having to press the brake pedal is a useful safety feature. Otherwise any child or adult could initiate start without that intent.

They need the key, though.
If you think the brake pedal combo is a safeguard, you haven't met my kids

 

[Tim Green]

I had my own problems the other day when I had to be told to put my foot on the clutch to start a manual car! Just shows when I last drove one!

 

[Lovemyev]

Another safety feature used to prevent the car from lurching forward if is has been left in gear and somebody attempts to start the car.

 

[MG steve]

They need the key, though.
If you think the brake pedal combo is a safeguard, you haven't met my kids

Are you getting to the age like me when if you can’t do something, ask the kids!

 

[Ruislip Resident]

I had my own problems the other day when I had to be told to put my foot on the clutch to start a manual car! Just shows when I last drove one!

I forgot that until I read this.