How to realign ews4 and dme e90. help !!

[rekmwrite]

Yea it still has ews, it’s just built into the cas pretty much I think.


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[rekmwrite]

Ista d should work . Pay attention to the control unit tree and see if there are any red modules


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[jimmyhgr]

Ista d should work . Pay attention to the control unit tree and see if there are any red modules


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perfect bro. keep you up to date thanks.

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[nico27210]

launch special fonction works fine in this case
connect to ecu, special fonction .....
done !

[tomvleeuwen]

EWS4 means there is no rolling code and hence no realignment procedure. You need the big guns to read ISN from ECU and write it to CAS (or vise-versa) unless DME is brand new...

Actually, thinking a bit more about it, it would make sense if the CAS is encrypted and some inexperienced person made the only key you currently have. If you think that DME and CAS have not been tampered with, and the key does not look genuine, it might be worth ordering a key from the dealer. You can check key status in CAS for all keys, if there are unused keys before the current key, you can be quite sure it is an aftermarket key. Sadly there is no guarantee that a dealer key will work after somebody tampered with the CAS.

[rekmwrite]

Would a bunk key still release the starter?


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[asiasin]

1. Is you cars instrument cluster showing a Tamper dot? If yes take out cluster and eeprom and reset to to 00000.
2. Reset milage in CAS 00000 and connect it back to the car.
3. Update Software to latest version of DME & CAS with WinKfp then should work, after synchronisation.

If you have no tamper dot
1. DME reset
2. CAS reset
3. Update Software to latest version of DME & CAS with WinKfp then should work, after synchronisation.

If you still cannot synchronise it, have you taken your DME out of the car and looked inside of it?
Use heat gun to heat the sealer inside the DME and remove the cover look at the bottom for water stains inside the cover, clean the DME with Alcohol and try synchronise it.
should fire.

All else fails get same part numbered DME matching set, DME CAS & Key from a donor car, it will 100% fire up if no problems wit the car.
then recode Kms & Vin clear codes to match.

Helpful tools:
Clones that work are FVDI and E/F scan tool, INPA Winkfp. Should be enough to fix any issues.

Hope this helps

[rekmwrite]

perfect bro. keep you up to date thanks.

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What ended up happening ?


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[tomvleeuwen]

Would a bunk key still release the starter?

Under certain situations, this is definitively possible. If CAS is encrypted, it cannot know the ISN of the ECU. It needs the key to decrypt it, but if the key is programmed in a certain way that it gets detected by CAS as valid while it is not, it will result in a different ISN. CAS has no way of knowing if the ISN is the correct one and just sends it to the DME. The DME will then not release fuel / ignition, but CAS is happy to crank the engine.

[joemajdalani]

Is you key original or someone made it ? If key was made with encrypted ISN will have same problem

[arvind]

Is you key original or someone made it ? If key was made with encrypted ISN will have same problem

Greetings to the House......
1. ISN...CAS....are you ablen to get SK/ISN values from CAS.
If yes (A)then your CAS seems to respond well as the Car cranks.
Save this file.
If No (B) your CAS is Bad... Need a woking CAS With Key matched and aligned and synchronize with DME...ASI stated above Read ISN/SK of CAS and save...now here when the values are being read and shown the DME can ask for CAS firmware to be upgraded and this is tricky...ALSO NEVER DO A CAS DOWNGRADE.
If the CAS is firmware comes as per car then you have to again read ISN of CAS and save.
Now step 2.

2. (a)READ DME ISN and save.
(b) Go to the Saved file of CAS And you Have to write this in DME.
(c) CAS + DME synchronize...if you get error Just Remove negative -ve terminal of battery( from the boot dickey) for 2 seconds and reinstall back.
CRANK the car and it should fire and start.
Further.....
The car MUST have battery power of constant 13VOLTS.
If these steps have been carried out and car has not started Then Repeat these steps by PUTTING UP HAZARD LIGHTS AND THEIR BLINKING PATTERN WOULD BE ERRATIC WHEN DOING A FORCED PROGRAMMING.....
STILL if no success then my friend then we got to see if you can lookup the Vehicle Order to see the various Controllers DME and CAS Shows Updated or Exchange.
......
To All My friends.....
Autel Maxisys 908 P has the capability of doing this once connected to Internet.
Also
The above steps that I gave are Only for hardcore Professionals and please Do not
Experiment.
If while Programming the Car voltage Drop
or the Procedure is made to end accidentally or Purposely then the Controllers Like CAS/DME become Damaged.
Thank You All.
arvind rampal
newdelhi india




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