Module VIN miss match

[FarmEV]

Does anyone have experience fitting a second hand OBC (on board charger) to an MGZS EV and solving the VIN miss match?

Thanks,

FarmEV

 

[Alb]

Have you already approached your dealer?

 

[Kithmo]

VIN mismatch ?

 

[Alb]

It's common practice on most modern cars for major peripheral components to be uniquely coded. The central processing software has a database containing this code so it knows it is communicating with a genuine part. If and when a replacement part is fitted, that database has to be updated, normally via software only available to the dealer. I'm guessing this is what the OP is talking about.

 

[N2STY]

You need dealer level diagnostics to code new unit

 

[Kithmo]

How inconvenient, I guess the OBC has it's own ECU incorporated, BMS maybe ?

 

[N2STY]

Btw some dealers would not deal with vin mismatch as some times only a new unit can be used once the vin has been coded it cannot be changed

 

[FarmEV]

Yes to all the above...
That's why I was asking for any experience getting around the problem.

The dealer just wants me to buy a new components (OBC + VCU in this case). I'm hoping to find a work around that will prevent trashing otherwise perfectly good parts.

FarmEV

 

[N2STY]

I have coded plenty of parts to cars but when it relies on vin information you normally need to replace the chip the vin is stored on making the car think it's new then the software can add the vin unfortunately china has been good at copying everybody else's diagnostic software they're very secretive about their own
The other way is to flash the chip with the vin but only works if it's a rewritable chip
Oh There is a third option swop chip from old unit

 

[hmadsen]

Manufacturers will tell you they code everything together like that, to prevent theft.

In reality they do this, because.

1. They dont really want you to be able to get a used part from a breakers, and install it yourself. (Or installed at all, they will usually actively refuse, or even be unable to reset a module and code it to your car).

2. They ensure, that only they can install it, so you might not even be able to have some independent garage do it for you, as they have no equipment to do the coding, even of a new part.

So It's more of a "insurance" that they will be the ones servicing their car, rather than it being theft deterrent.