There are many "myths" and misunderstandings about BMW ECU / DME reprogramming. We hope to aid answer and requite you solutions to the most commonly asked questions.

My mechanic/dealership says that you tin can't reprogram, re-lawmaking, or swap a used BMW ECU between cars. How can yous assist me?

This is true, merely we have the solution!

E'er since Dec of 1994 BMW added a new Engine Management technology every bit an anti-theft measure.

The new anti-theft technology is a device called the "EWS", which is as well known as the "Immobilizer". This module compares the VIN number of the car between dissimilar electronic modules in the car. If the VIN number isn't consistent, the machine will not start.

Also the EWS has a password characteristic chosen the "Rolling Code" which changes between the modules every time that the machine is turned off. This makes it virtually impossible to swap used ECU'due south between BMW cars.

Yet, nosotros've establish a way to work around this.

We tin reprogram a used ECU using another VIN number and reset the Rolling Code, virtually making the unit "virgin". But then, tin we successfully commutation and swap a used ECU to piece of work in another BMW automobile. All you need to do is marshal our ECU to your car's EWS using this USB Interface Cable Automobile with yous laptop USB connexion and the car's OBD2 Diagnostic terminal.

Why can't I buy a used BMW ECU online and install into my car myself?

Because if you lot install a used ECU in any BMW, the VIN number and Rolling Lawmaking will not match, and it will prevent the car from starting.

The EWS was created for this very purpose. What happens is that the EWS system connects with the primal transponder, only fails to properly communicate with the DME. The car might creepo, just the DME will never get the "permission" to power the fuel pump and send the spark signals.

When I buy an Exchange BMW DME from you lot, volition the unit be Plug and Play?

Our Exchange ECU's are programmed to your BMW's VIN number.

Notwithstanding, due to the fact that the EWS systems have a random "Rolling Code" we can't judge this code.
Therefore, we reset this characteristic in lodge to brand the ECU "blank".

In social club for the unit of measurement to work in the car, a DME to EWS Alignment/Synchronization has to be carried out.

This is washed using a BMW scanner like this USB Interface Cable Car with you lot laptop USB connection, a GT1, ISTA, Autologic, Launch X431 or Baum Tool DS2021. Information technology takes 5 minutes to "marry" the ECU to your car, and then the ECU is fix to start the car.

If y'all Repair my ECU, do you I need to "re-flash", "re-lawmaking" or "re-program" the ECU earlier installing back into my car?

No.  ECU re-programming is not required because almost repairs are washed on the hardware parts and not on the software programming. Therefore, the programming of the ECU will never exist altered.

Every mechanic and dealership will often use different words and terms to explain to you how ECU'due south and scanners work, which tin can be confusing.

Here is a quick "definitions guide" to aid you understand them better:

  • BMW Scanner: They are used to scan all the electronic modules in the automobile to notice out what may be causing a Bank check Engine Lite to come on, or to ascertain error codes found in the modules to figure out, and to install software updates on the electronic modules of the vehicle.
  • DME ECU Programming: This is the same every bit when you lot install the the Windows Operating System in your desktop estimator. This process tells the DME to which car it will installed in and how it should manage the engine functioning while the car is working. The reprogramming process takes an average of 45 minutes to 1 hour.
  • DME ECU Recoding: This procedure sets on the ECU the VIN number, programming codes, and transmission settings. Many times this process is done together with the ECU Programming.
  • DME Alignment/Synchronizing: This is a elementary "Copy & Paste" process which takes only 5 minutes. The BMW Scanner copies the "Rolling Lawmaking" from the EWS and Pastes it in the DME memory. This process "marries" a new ECU to the vehicle allowing information technology to start.

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These are some OBD2 BMW scanner tools that we recommend to brainstorm diagnosing your own car:

   

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Quality is the colonnade of innovation in our visitor.
Nosotros strive for EXCELLENCE when information technology comes to customer satisfaction.
From the kickoff phone call or email, to when our customer unboxes their rebuilt unit, we are always looking for ways to go beyond "the usual" and "the norm".

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The blood of our community is the independent European machine shops, the online forum enthusiasts, used parts resellers, and the car performance shops. Our network of shops and full general public volition be able to enjoy lots of free information, complementary to the services that nosotros provide. We also love every chance to interact with our competitors.

MEET OUR Team

THE RIGHT PEOPLE FOR YOUR Projection

Jose Pain

Possessor/ Pb Technician

Jorge Morales

Co-owner

Marcelo Barbalace

Research and Evolution Engineer

Fernando Barbalace

Technician / Developer

Juan Pinon

Technician

Maria Pain

Technician

Eric Pomerantz

Technician

Diego Solis

Sales Agent

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If you take any technical questions delight contact the states or call (954) 652-1496.

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