Bmw Flashing

Scott Technician California Posted   Latest  
Resolved
Programming
2003 BMW 325Ci 2.5L (M54) 5-spd (5HP-19) — WBAAZ33423PH30644
Pcm Replacement

hey guys, hate to keep asking what i feel are basic questions. but just a quick one. we diagnosed a bad pcm in this BMW. it has no comm untill you freeze the pcm and then you can talk to it for about 30 minutes. we have a new pcm from BMW ready to install and i was asked if i could flash it, i have a snap on pass thu pro 4, but i have yet to even think about attempting BMW. i do have a quality battery maintainer thats sold for reflashing purposes. is this something that should be easy? i am just trying to decide if its safer to ship it to dealer or if i should give it a shot. that little pcm is crazy expensive, and i dont want to brick it. im not afraid to learn and try, but i am not sure how well these cars flash or how reliable the program is with J2534. Thanks

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Interesting
Greg Owner/Technician
Georgia
Greg
 

In my extensive time at BMW the early to mid 2000’s were notorious for programming failures and problems with the boards overheating. i do have a question. If you leave the DME exposed during diagnosis does it still over heat? Additionally, if you have access to the module while installed and it stops communication, I would recommend performing a wiggle test at the DME connector to see if…

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Freddie Owner/Technician
Louisiana
Freddie
 

Maxysis Elite can

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Bill Owner
Nevada
Bill
 

Must use dealer tool for reprogramming. Don't even attempt with anything else.

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Elias Owner/Technician
California
Elias
 

I havent done one of those in a long while but I thought it just needs to be coded if you got from dealer...then re align the cas...can be done with non dealer level tool.

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Jose Technician
California
Jose
   

Hey Scott, im just west of Sacramento Airport. Give me a shout, i have a legacy DIS 54 and Progman on a laptop with yellow DK HEAD

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Steven Owner
Florida
Steven
 

New from the Dealer E46...Only needs Coding and DME / EWS alignment..(DO NOT PROGRAM)

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Johnny Owner/Technician
Florida
Johnny
 

Hi just read the coding on the old one and code the new one with the same coding and ews alignment no programing

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Christopher Owner/Technician
Arizona
Christopher
   

I have a autel ms908 p that does bmw ...and does vey well for cip programing......but only as long as update is current.....and internet is there......all is automatic also...very little skill needed............

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Tim Mobile Technician
Washington
Tim
 

I don't think I would try doing anything with the snapon scanner... It is only a scanner... As said above, the DME comes from the dealer with with all the data in it, you just have to sync the DME to the EWS.. You can do this in a heartbeat with Autel Maxisys or Abrites, or even the BMW scanner V1.4 from ebay... All these will read the coding from the old and transfer to the new... Good luck...

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Bill Owner/Technician
Michigan
Bill
 

Scott if you have never done one and don't plan on doing it regularly moving forward you may consider subletting the service or sending to a shop that has the equipment and experience to do so... What is your risk vs reward?? Autologic and Autel should be able to get the job done on this model year. I highly doubt snap on will get it done..... And of course ISTA would do the job. Probably only…

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Mihail Technician
Maryland
Mihail
 

Good morning, just install the new dme and align it with the ews and the car will fire. Any scanner would do it. It is programmed by the dealer, do not program! I doubt it requires coding either but you can worry about that later if it sets a strange fault code you have no idea what’s all about. You can always code it later. Good luck.

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Dien Owner/Technician
Oklahoma
Dien
 

You have to have a power supply to maintain proper voltage, not a battery charger. You need access to the files from BMW. It does take some time to learn. Using an Autel Maxsys is much easier. I would send it out to have program if you do not have someone there with experience to walk you through the procedures.

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Scott Technician
California
Scott
 

Yup, i have a proper programmer maintainer, thing was not cheap. set to 13.8 and tried with my Maxsys and it told me not supported. called a local euro shop and they believe they will be able to, had to sublet.

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Scott Technician
California
Scott Resolution
 

So, after reading yalls post and recommendations. i attempted to use the Autel Maxsys programming feature and it informed me that it was not supported, looking at the data the pcm has no calibrations or files on it as the ECU ID is not showing calibration or software. decided the best bet was to sublet to a local Euro that says they are able to flash and update. im willing to learn and figure…

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Mihail Technician
Maryland
Mihail
 

It’s your call, but you can’t damage anything by running the dme-ews align procedure after installing the new dme. It takes 1 min. and it is in the special functions in the autel. You don’t need an external stabilizing voltage source either. If there are no other problems, the car should happily start after that. The dme comes programmed from the dealer. No programming is necessary. The autel…

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Dien Owner/Technician
Oklahoma
Dien
 

Hi, Another option for next time: Buy a salvage pcm(DME),security module(CAS),and key as a complete set from donor car.

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Jose Technician
California
Jose
 

This is not a CAS car, this car uses ews

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Dien Owner/Technician
Oklahoma
Dien
 

oh, ok. It has been a while since i worked on ews.

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Rudy Technician
California
Rudy
 

Scott_ if youre going to service Euros on a regular basis, Autologic is a must have,IMO.

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