There are two programs you'll need to code a new/used ABS module to your car. Using NCS Expert to code your ABS module, and then use INPA to calibrate steering angle sensor.
- Coding with NCS Expert
Open NCS Expert on your computer, then click on "File" on the upper left corner then choose "Load Profile"
A "Choose profile" window will then pop up, depends on the different NCS Expert versions you installed on your computer, choose either "Expert Mode" or "NCS Dummy profile" whichever is available to you.
From there, click on "VIN/ZCS/FA"
Then click on "ZCS/FA f.ECU"
A new window will then pop up asking to select chassis, go ahead select "E53"
Another window will pop up, select "EWS" here.
When it's loaded click "Back" button on the bottom
Then click on "Process ECU"
Choose ECU "DXC"
The last step, click on "Execute job", then you've done the first part, DSC and brake lights should go off from your dashboard.
-Calibrate steering angle sensor
Open INPA on your computer then choose "E53" from the bottom menu
Click on "Chassis", then choose your ABS module on the right, it's either DSC 5.7 or DXC8, most people have DSC5.7. If you are not sure which one you have just try both of them, you won't be able to proceed to the next step if you choose the wrong module.
Again, depends on different INPA versions, if you don't see "steering angle calibration" option from the main menu, choose "Activate" from the bottom menu bar.
From there, you should be able to calibrate steering angle sensor, straighten your steering wheel then press "F2" or click on "LWS" to calibrate steering angle sensor.
After you've done that 4x4 light on your dashboard should go away and you have coded a new ABS module to your car.
Best of luck.