MG4 Secret Menu Mode...

siteguru said:

When you have your phone connected to the car (e.g. to use Google maps) and you've selected the Android Auto button (if AA hasn't come up automatically), press and hold the Voice button (top left on the steering wheel) and wait for the "bidly-bing" sound from AA and a visual prompt at the bottom of the screen. Then say (for example) "call <contact name>" and Google should place the call. (You should see text representing what you've just said in that visual prompt). If that person has more than one number in the contact card in your phone then it should prompt you to select which one. Alternatively say "call <contact name> mobile" (for example) and it should dial their mobile number.

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richlove said:

It has some nice other features, for example if you're using an app like TuneIn radio, you can just say 'Hey Google, play Magic' (not even worrying about the button) and it will figure it out. Saves a bit of screen faff

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avargas04 said:

Hello everyone, I have the MG Marvel R and unfortunately I cleared some values in the 200519 menu and now the Speedometer is in Miles (instead of KM) and when trying to sign in to connect with my mobile it gives me an AES Encrypt error, anyone knows how to fix this? Both error or at least to access any menu to change it to KM on the Speedometer side, it is in Kms on the main screen, which is weird.

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MG Marvel R EV Forum

Discussions and information about the MG Marvel R SUV electric car in the Comfort, Luxury and Performance editions.

www.mgevs.com

leonkernan said:

Ok, so progress.

The engineering second level password is a number. (In my case, 8 digits)

The problem is it appears to be calculated from your cars serial number, so it's different for everybody. I haven't sat down to figure out how they convert the serial number into the code yet.

The way I got it was:

• Bring up the password box and try something, which will be wrong.
• Export the HU logs to a USB stick
• Open the dmesg files for that session in a text editor app on a PC and search for "password".

No kidding, when they compare what you enter to the password, they put the actual password in the Android logs!!!!

it looks something like this:

Code:

A9_Diag_V1.0.0.58_P: [MainMenuModel] getRightPassword
PasswordFactory: getPassword origin sn - xxxxxxxxxxxxxx
PasswordFactory: getPassword ---> str_sn - xxxxxxxxxxxxxxx
PasswordFactory: getPassword ---> pwd = 12345678

Behind that password box a couple of extra buttons open up: "Tools" and "Disable Version Check"
In Tools:

• Reboot
• Factory Reset
• Switch to OTG (changes to Switch to Host when pressed)
• Disable AA (Android Auto)
• Disable CP (Carplay)

For those people wanting to disable features / etc, this isn't for you. The main purpose for the moment is to allow people with Android coding experience to get into the system and start poking around.

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leonkernan said:

Don't stress, you can't break anything in that menu. It's the same one the dealers get to do updates and see version numbers.
You can't actually do any harm in there.

There is an extra level of engineering menu in there that we don't have access to yet.
If you tap the bottom right corner of the engineering screen 5 times, a password box pops up. We haven't cracked that one yet.

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siteguru said:

In the Trophy (Luxury) I thought you tapped on one of the version numbers a few times? The bottom-right corner is for the SE's further-embedded menu I thought?

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