How to realign ews4 and dme e90. help !!

[jimmyhgr]

hello can someone guide me on what should i do to resynchronize or realign ews4 / dme on a bmw e90. 328i 2008. I have antitampering protection code. bad Rolling code from dme.

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[rekmwrite]

Have you tried cas reset then align ?


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[jimmyhgr]

Hi. I have a scan tool autel ms908p and I did a reset to the cas but it didn't work.

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[rekmwrite]

What codes are you getting? And do both cas and dme communicate when you read faults? What led you to realigning ?


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[jimmyhgr]

No parts replaced. All are the original car. and check with inpa and all have the correct vin registered.

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[jimmyhgr]

the car turns but does not starthttps://uploads.tapatalk-cdn.com/20200125/923887df33f2b2e59561918708e23635.jpghttps://uploads.tapatalk-cdn.com/20200125/76c7c624e110abec6273772a5365fbb6.jpg

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[jimmyhgr]

inpa says he is not able to realign ews4. and in autel just let me do a reset to cas or dme. but not realign

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[rekmwrite]

Do you have any other working keys? What led up to this problem?


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[racin-snake]

Remove negative battery lead wait ten mins Then reconnect try again with autel if its original dme and cas it should synchronise

[jimmyhgr]

I only have one key. I really don't know very well the story since it is an auction car. and it was bought without turning on.

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[jimmyhgr]

Remove negative battery lead wait ten mins Then reconnect try again with autel if its original dme and cas it should synchroniseBoth are original. All vin registered in the modules match. I will try your suggestion

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[jimmyhgr]

Remove negative battery lead wait ten mins Then reconnect try again with autel if its original dme and cas it should synchroniseJust to confim your recommendation is to remove the negative. wait 10 minutes and then with autel do a reset only to the cas?

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[rekmwrite]

Yea they’re saying to remove neg batt cable , wait ten mins, then reconnect. Then Try align


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[rekmwrite]

But the engine cranks, which should mean that the CAS is allowing the starter to engage. Which makes me think synchro is ok


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[jimmyhgr]

It doesn't let me do realignment. Why is it ews 4. And it doesn't have that option. only reset module

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[rekmwrite]

This month I’ve had 3 out of 12 “e90 crank-no-starts “ end up starting after unplugging the MAF. Then starting the car.


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[rekmwrite]

The alignment should be in the dme functions not the CAS


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[jimmyhgr]

But the engine cranks, which should mean that the CAS is allowing the starter to engage. Which makes me think synchro is ok


Sent from my iPhone using TapatalkIt turns but does not start. It has no spark. and in inpa it says that cas is blocked

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[jimmyhgr]

The alignment should be in the dme functions not the CAS


Sent from my iPhone using Tapatalki'm working on that right now

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[jimmyhgr]

To those who disconnected you did the maf have anti-tampering code?

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[rekmwrite]

Actually it might be in both.

Do you know if CAS and DME are original to the car. It’s possible someone tried swapping in a used unit.

Does anyone there have ista?


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[jimmyhgr]

I think they are original because they all have the same vin. But I am not 100% sure.

I have no ista.

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[rekmwrite]

And on those instances there were no codes. I made it a diagnostic step in all my Bmw crank-no-starts after the first success.


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[rekmwrite]

I don’t have my laptop with me but I’ll put the code through ista later and see what type of test plan they might have for this code.


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[rekmwrite]

Post your whole vin number


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[jimmyhgr]

in dme I can't find thathttps://uploads.tapatalk-cdn.com/20200125/610a394f85f7a19a2bb4c98f4bfca5e3.jpghttps://uploads.tapatalk-cdn.com/20200125/514dbc7ac2bd683bbb7cc48e6274efd5.jpg

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[jimmyhgr]

Post your whole vin number


Sent from my iPhone using TapatalkWBAVA33578K054131

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[rekmwrite]

Looks like you’re in actuations menu. You need to go into something like control unit functions . Or CIP


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[jimmyhgr]

Looks like you’re in actuations menu. You need to go into something like control unit functions . Or CIP


Sent from my iPhone using Tapatalkok i found it. but ......https://uploads.tapatalk-cdn.com/20200125/054bc2eaf568c53cd0396ad9e2672b70.jpghttps://uploads.tapatalk-cdn.com/20200125/088c377398f13b943b6e72fcb430c964.jpg

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[jimmyhgr]

Cas send invalid rolling code. is out of alignment.

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[jimmyhgr]

I'm doing a capacitor discharge to try

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[rekmwrite]

Damn. I normally only use ista , I’m not sure how capable the autel is but you need to try the synchro with ista + Icom


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[jimmyhgr]

Damn. I normally only use ista , I’m not sure how capable the autel is but you need to try the synchro with ista + Icom


Sent from my iPhone using Tapatalkokay . Tell me what to buy to do that

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[rekmwrite]

I wouldn’t buy anything just yet. Can you even communicate with the CAS?


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[jimmyhgr]

Yes, I have communication with the cas

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[rekmwrite]

Remove negative battery lead wait ten mins Then reconnect try again with autel if its original dme and cas it should synchronise

You should try this first. If not, then

Perform cap discharge
While that’s going on, pull spark plugs and make sure they’re not fouled, if they are, clean em.
Then reconnect battery cable ends (+ first - last)
Go into dme and reset it ,
Go into CAs and reset it
Then perform sync

If that don’t work then I’d be questioning the dme and/or CAs’ originality because when you go to start the car,.
The CAs and the dme have to be on the same page . Like a secret handshake. If the dme goes to greet the CAs with a thumbs up and the correct response is a peace sign, but the CAs throws the middle finger, then you won’t start. The CAS seems to know your key, because the starter is engaging. But while that starter relay is energized, someone is throwing the wrong signs to each other. And it’s more likely the CAS .

I’m also only speculating,




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[jimmyhgr]

I'm sure you're right.

I've been finding out about my autel scanner's ability to do the alignment and apparently it's not capable. In this vehicle model the option of aligning is not available.

Then inpa is not capable either. I only have the option to use ista for what I have found. I have searched even more and found that I can use ista with my j2534 from autel. But I really don't know how ista works. Is my first time.

I must download ista and ista / p and install it on my pc. Then I also read that I must subscribe on the bmw website for one day to be able to access and perform the procedure.

Do you know any simpler way to do this or is that the only way?

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[rekmwrite]

A simpler way would be to find someone with ista or autologic who’s willing to go to you , where you located ?


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[rekmwrite]

Or maybe tow your car through your insurance , and have the dealer or a euro shop handle it. But if you can afford to have your car down for a bit, then you can have success with ista/d and a K+Dcan cable. You don’t need ista/p to sync cas-dme. Use ista/d. Don’t use ista/p unless you have icom. A genuine factory icom is relatively inexpensive. And a good investment if you DIY and/or plan to own more bmws.

Let me know your location. I have an extra cable


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[racin-snake]

But the engine cranks, which should mean that the CAS is allowing the starter to engage. Which makes me think synchro is ok



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No it doesn't .... these will crank if not aligned do as i say .. LET CAR DISSIPATE WITH NO BATTERY POWER REFIT TERMINAL AND TRY AGAIN WITH AUTEL

[jimmyhgr]

Or maybe tow your car through your insurance , and have the dealer or a euro shop handle it. But if you can afford to have your car down for a bit, then you can have success with ista/d and a K+Dcan cable. You don’t need ista/p to sync cas-dme. Use ista/d. Don’t use ista/p unless you have icom. A genuine factory icom is relatively inexpensive. And a good investment if you DIY and/or plan to own more bmws.

Let me know your location. I have an extra cable


Sent from my iPhone using Tapatalkhi bud.

I was entertained with other cars today and did not touch the car all day.

Going back to the matter hehe. well I have a K + CAN K + DCAN cable wl which I use to connect with inpa. I don't know if that would work? .

I'm in Kissimmee Florida.

Pd. Yes. I want to continue working with bmws. I would like to make tools. at least the necessary ones and start trying not to be so expensive

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[jimmyhgr]

No it doesn't .... these will crank if not aligned do as i say .. LET CAR DISSIPATE WITH NO BATTERY POWER REFIT TERMINAL AND TRY AGAIN WITH AUTELI already tried to leave the car for more than 20 minutes without a battery bro.

Also try to make a discharge capacitor. And it didn't work out.

The issue is that autel does not support synchronization ews "4".

There is no alignment option. You can only reset the modules. there is even a video of an autel consultant on youtube that the guy says that in certain cars even after an update to the modules antitampering codes can occur and he says that it should be corrected with ista and ista / p.

In the first image you can see the options that my scanner gives in that car and the option of alignment is missing. and in the second image you see the complete options for other cars


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[rekmwrite]

No it doesn't .... these will crank if not aligned do as i say .. LET CAR DISSIPATE WITH NO BATTERY POWER REFIT TERMINAL AND TRY AGAIN WITH AUTEL

Oh that’s right I was thinking ews3 my bad


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[racin-snake]

Refit the battery terminal Then On your autel go into .. CAS.. then Special Functions ....then CAS DDE DME ALIGNMENT

E90 HAS CAS 2 OR 3 NOT EWS

Possibly trying to access stuff the vehicle doesn't have . in DDE DME you need to go into cas special function

[jimmyhgr]

I have found information from people like you who claim that e90 has no ews. Just cas. and I'm sure you have more knowledge than me in this.

But if so, because inpa says that it is of type ews4 and that it is blocked. believe me that I have looked everywhere for options that allow me to align with autel within the dme does not appear any that allows me to align.

I really don't know what to do anymore. I'm downloading ista/d to try. https://uploads.tapatalk-cdn.com/20200126/dabf1b8ea01e4cbc5b8bfc5788b2405e.jpg

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[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


Sent from my iPhone using Tapatalkperfect 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 problemGreetings 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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