Diagnostic VDI, VNCI, MDI with MG4

[Rolfe]

Welcome to the forum @samba. I'm sorry we meet because you have a crisis, but if you can find help anywhere for an issue like this, it will probably be here!

 

[samba]

Modules that fail, reprogramme individually as replacements - different tab to the one touch update.

To get it to work there may be battery disconnects needed and as for the park thing. Mine had similar but updating more modules and doing that final procedure it warns you about (parking on level ground and doing the things it tells you like holding the brakes sorted it). Also, be prepared to have to try multiple times to get stubborn modules to take the programming FVCM took 9 goes - it was painful.

Thx for your quick reply. But I dont think I can do this. Every time now I get an error before it gets to this module. I think my problem right now is that is necessary to put the car in P mode. But I can't do that. It switches a few sec later to N. I turned the battery off but it won't help

 

[yellowmitch]

Did you ever work this out? Just done all the updates to my MG5 FL except these.

Hi there, I've just bought a FL MG5 with a fault and I also have a ZS EV trophy here at home.

I have some diagnostic experience and plenty of mechanical / IT experience.

What's the cheapest and easiest way for me to get CDs / sips etc up and running?

Also, can it program keys

 

[Kieran]

Has anyone had experience physically replacing the FICM? Whilst my vehicle is a ZS facelift I’m hoping someone can confirm if replacing the head unit requires configuring vis SIPS to update the VIN etc or if this is learnt by the head unit from the vehicle. I appreciate any experiences with MG4s don’t mean it will be the same but hoping for some indication.

 

[BingBong]

questions: can i update the T-Box only with USB without SIPS?

 

[Mouss]

Only TBOX MPU. For TBOX MCU, you need SIPS

 

[BingBong]

Only TBOX MPU. For TBOX MCU, you need SIPS

I do not have VNCI, but I am considering whether to order one (or just give a long problem list to my dealer).

Is it ok to update TBOX MPU without MCU?

 

[thei]

Updating only the MPU is not advisable, as errors can occur due to dependencies. Instead, order the VNCI and update your entire car.

 

[Mouss]

You can update just the MPU, I saw many cars with TBOX MPU and MCU with different versions (MPU with 21E32, MCU with 18E32 for example) but it's better to have both updated to prevent any issues.
But the real question is : if your car connectivity and iSMART are working, why would you update them ?

 

[comware5]

Hello,

Many thanks to everyone involved in providing references and links describing how to upgrade our MG4 modules.

After my MG4 second year maintenance, where once again no updates were done, I decided to do it myself.
The car works really well but LKA and ACC issues are annoying at times (if not dangerous for LKA).

I started with EVCC reprog which actually does reprogram 7 modules (GW, BMS, EVCC, SCU, IMCU, EPMCU then CCU).
IMCU did not work properly ("ppf file run failed"), issue fixed by disconnecting VNCI, closing the car for a few minutes and trying again.
EPMCU then failed with "communication error", tried different things to no avail.

The car was still usable, but my 12V motorbike charger (1A) was strugling to keep up with the car consumption while reprogramming, so I bought a proper one (5A)

Tried reprogramming again with new charger, this time EVCC failed with communication error every time. At some point it showed "VIN mismatch". To fix it you have to plug in your EV charger. You can then re-read the ECU and disconnect the charger.

I then changed strategy for the two remaining modules : instead of using "Programming and coding" tab, I tried using the "One Press" one.
EPMCU & CCU : Ok !

Used the classic program function from "Programming and coding" for HVAC, FDR, FVCM (took 1 hour !), IPK (35 min), no issues.
Then used the config function for FVCM, FDR, BMS, IMCU, GW, ESCL

For IBS and BCM, I used the One Press tab.

TBOX MPU via USB then MCU via SIPS, and finally the infotainment update (don't forget to reset to factory default, you can skip the iSmart prompt).

After a quick ride :
ACC behaves way better in corners, I have a trcky one on my daily comute (downhill + bridge/wall on side of road) that used to drop 10km/h for around 10s. Now it just drops 1 or 2 km/h, and quickly goes back to the set speed.
LKA is better : forcibly went to a side of the road, got a slight nudge and a beep.
HVAC : will check in the future

Word of advice to anyone wanting to do it as well :

1. If you use a VNCI adapter, update your firmware (1.0.0.9)
2. Buy a proper 12V battery charger (5A works fine, 1A is not enough)
3. Use a laptop with working battery or a desktop connected to a UPS
4. Make sure to use the latest SIPS software (1.0.2.5)

 

[BingBong]

You can update only the MPU, I saw many cars with TBOX MPU and MCU worth different version (MPU with 21E32, MCU with 18E32 for exemple) but it's better to have bof update to prevent any issues.
But the real question is : if your car connectivity and iSMART are working, why would you update them ?

I am on 19e32 at both. Ismart is a little lagging especially after the car has been "sleept".

Hello,

Many thanks to everyone involved in providing references and links describing how to upgrade our MG4 modules.

After my MG4 second year maintenance, where once again no updates were done, I decided to do it myself.
The car works really well but LKA and ACC issues are annoying at times (if not dangerous for LKA)

I started with EVCC reprog which actually does reprogram 7 modules (GW, BMS, EVCC, SCU, IMCU, EPMCU then CCU)
IMCU did not work properly ("ppf file run failed"), issue fixed by disconnecting VNCI, closing the car for a few minutes and trying again.
EPMCU then failed with "communication error", tried different things to no avail.

The car was still usable, but since my 12V motorbike charger (1A) was strugling to keep up with the car consumption while reprogramming so I bough a proper one (5A)

Tried reprogramming again with new charger, this time EVCC failed with communication error every time. At some point it showed "VIN mismatch". To fix it you have to plug in your EV charger. You can then re-read the ECU and disconnect the charger.

I then changed strategy for the two remaining modules : instead of using "Programming and coding" tab, I tried using the "One Press" one.
EPMCU & CCU : Ok !

Used the classic program function from "Programming and coding" for HVAC, FDR, FVCM (took 1 hour !), IPK (35 mn), no issues.
Then used the config function for FVCM, FDR, BMS, IMCU, GW, ESCL

For IBS and BCM, I used the One Press tab

TBOX MPU via USB then MCU via SIPS, and finally the infotainment update (don't forget to reset to factory default, you can skip the iSmart prompt)

After a quick ride :
ACC behaves way better in corners, I have a trcky one on my daily comute (downhil + bridge/wall on side of road) that used to drop 10km/h for around 10s. Now it just drop 1 or 2 km/h, and quickly go back to set speed.
LKA is better : forcibly went to a side of the road, got a slight nudge and a beep.
HVAC : will check in the future

Word of advice to anyone wanting to do it as well :

1. If you use a VNCI adapter, update your firmware (1.0.0.9)
2. Buy a proper 12V battery charger (5A works fine, 1A is not enough)
3. Use a laptop with working battery or a desktop connected to a UPS
4. Make sure to use the latest SIPS software (1.0.2.5)

Nice, do you feel and different at TJA behavior?
Does TJA can handle now roads with only one side marking?

 

[Mouss]

23E32 for MPU and MCU seems beter for iSMART

 

[yellowmitch]

I am on 19e32 at both. Ismart is a little lagging especially after the car has been "sleept".


Nice, do you feel and different at TJA behavior?
Does TJA can handle now roads with only one side marking?

Is key programming available via this software?

I assume you but a day's access each time?

I'm tempted to buy all the gear as I have a 5 and a ZS here.