Problems with E90 CAS3 - now bricked

[jamesfawcett]

Hi all, Ive been struggling for a few weeks now with a problem:

I tried to run the CAS>>DME sync in Inpa and also ISTAd to clear the fault for my CAS and DME to communicate, but it failed everytime saying "incorrect start value during start value matching".

I purchased a spare CAS with the same hardware number and wrote my dump to it, but the car would not communicate with it

Tonight I've dumped from my original CAS that would not start the car to check the readout, all looked ok to me, [s]but now I've messed up with the soldering iron and damaged the CAS so it won't respond.

Can I purchase another matching CAS, and write my dump to it? Or does that not work? It is possible that the second CAS I purchased was faulty, or maybe I'm doing something wrong![/s]

Edit: Ive reflashed the original CAS and managed to get it responding again

Thanks for any help you can give me

[autodiagservices]

Write back the dumped data onto the corresponding donor CAS module. And confirm if your keys are still present in the CAS dump, then perform alignment


Best regards


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[jamesfawcett]

Thanks

Edit - files removed for now

[jamesfawcett]

Thank you autodiagservices, so all key data is also stored in the OL15Y chip too?

I might have to purchase a third CAS to have another go.

[jamesfawcett]

I reflashed the original CAS again and the car is responding again now, I checked all the contacts with a multimeter and everything is correct, I just can't get the EWS error to clear, the CAS and DME will not align at all.

I am wondering if I've damaged the ribbon or something that plugs into the CAS.

I am going to try update the CAS daten to the latest with WINKFP. If anyone else has any ideas please let me know, maybe taking the EWS protection out of the DME is an option?

[tech_cz]

If your car cranks, but not start it means the key (and of course ribbon cable) is OK.
You just have to make sync CAS and DME.
If you can´t you have wrong I-level in DME or CAS. So flash both with same I-level (or both with last).

WBR, Marek

[jamesfawcett]

If your car cranks, but not start it means the key (and of course ribbon cable) is OK.
You just have to make sync CAS and DME.
If you can´t you have wrong I-level in DME or CAS. So flash both with same I-level (or both with last).

WBR, Marek

Cool thank you Marek, I'm not sure what I-level is so I will have a google of that now, thanks for the lead I will let you know how I get on.

I flashed the latest daten to my CAS, it didn't solve it either but was worth a try.



I'll do some Googling on I-level, hopefully it's something I can do with the Software I have and the K+Dcan cable

[jamesfawcett]

I have a feeling I might have a CAS3+ encrypted CAS, and that might be why the sync does not work (EWS4).

[dashradio]

Your quick and easy way to get out of your problem, buy an ECU & lock set £150.00

https://www.ebay.co.uk/sch/i.html?_f...s+key&_sacat=0

[FxShaw]

I am just trying to find a way to get my ISN from my original dump. I have a feeling I might have a CAS3+ encrypted CAS, and that might be why the sync does not work (EWS4).

I've seen a tool called VVDI2 which seems to be able to extract the ISN from the encrypted original dump I have, maybe I have to do that? If anyone has any pointers on how to compare the ISN, or if i'm on the wrong path please let me know

Can you get the ISN from DME? if so then what is it?

[jamesfawcett]

wouldn’t I need the matching CAS too? I would like to work out the issue, sorry for all the questions on this, it’s been a steep learning curve and not the easiest car to learn on

[jamesfawcett]

Quick question - I upgraded my CAS datens After my last dump.

If I restore that dump to the CAS, will it downgrade?

Is the firmware stored in the OL15Y? Or on another chip?

[jamesfawcett]

I also flashed the same version to a spare CAS, and it works well in the car. It's good to know I have a spare CAS now too

Thanks for everyone's support in this

[jamesfawcett]

Connecting with VVDI 1.2.2 was a fail.
CAS software too new, even though I downgraded it to the original version that came on the car.
DME CAS Sync also was denied in VVDI.

I am thinking next of downgrading the CAS Even further, currently searching online to which version is recommended. I am currently on 9395657 now.

[jamesfawcett]

*image removed for now*