BMW E90 CAS3 Bricked Solution with VVDI2

I dumped and modified the OL15Y chip in my CAS3 which seemed to go well, until I tried to start the car. The mileage was reading the same on the Dash and CAS readouts in INPA, but whenever I went to start the car, it would spin the starter motor but no start.

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 every time saying “incorrect start value during start value matching”. The fault codes are 4A62 and 4A63 (EWS tampering).

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.

Senior professional advice 1:

You have Xhorse VVDI2, it’s simple. RESTORE original dump to CQS. Choose “file make key” option and tick the box 16 or 64 attempts to start.

Program the key with programmer and try starting. When it doesn’t , put key in programmer and click the window where it says “not start”. After a few attempts it’ll fire up. Done.

If you try doing the same with OBD the tool will mess up your CAS eeprom which happened to me. Car will start once but then you’ll have a A0AA code in CAS.

Thanks

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Program Benz S500 08 W221 All Keys Lost with VVDI MB Tool

How-to program Mercedes Benz W500 Year 2008 chassis W221 key with VVDI MB BGA Tool when all keys lost.

Step 1: Read EIS Data

Choose chassis W221 and read EIS data

Reading data success.

Save EIS data
Save HC05 format file

Step 2: Calculate password
Select Password Calculation

Select IR mode and chassis W221
Press Data Acquisition

Connect VVDI OBD cable to OBD on bench before continue
Connect IR adapter to VVDI MB before press OK

Take out and insert again if already inserted

Wait until calculate password success

Step 3: Prepare key file

Go to Prepare Key File->Load EIS file

load EIS file

Select key format v51 and press Prepare Key File

save key file

Step 4: Write Key

Go to Read Write Key

Identify key and Load Key file

load a key file

choose key file format v51 and press Write

VVDI MB Tool write key success

Test EIS status/Working Key->Test working key

Insert working key to VVDI MB IR reader before press OK
Insert working key to EIS
Insert working key to VVDI-MB IR reader

Test working key okay.

Start vehicle with the new key.

Done.

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