Tutorial: Launch X431 calibrates DSC Steering Angle Sensor on BMW.

Preparation:

Device: Launch X431 Pro5/ X431 Pad V (PAD 5)/Pad VII (Pad 7)

Car model: BMW 320i E90 2006

Steps:

Step 1. Diagnose fault code

Enter the launch scan tool main menu

Select BMW newest software version>> Automatically search>> Coding/Program

Detect the vehicle info and some fault codes in the system list

Step 2.Clear fault code

Select ABS (Anti- Lock Braking system- DSC)

Confirm the module information

Clear fault code

Step 3. Calibrate BMW DSC Steering Angle Sensor

When read fault code again, it still shows 5E50 fault code

5E50 DSC: Steering- Angle Sensor: Serial number; Calibration required

Select Fault Guidance>> Special function- SZL/DSC: Steering Angle Sensor Adjustment>> Operate

The steering angle must be calibrated after following jobs:

• Replacement of steering column switch cluster
• Encoding of DSC Control Unit
• Adjustment work on steering geometry
• Working on steering and/or front axle

The run flat indicator must be additionally initialed after adjusting the steering angle on completion of the following work:

• Encoding of DSC control unit
• Replacement of DSC control unit

Steering Angle Sensor matching…

For vehicle starting from 12/2004, the SZL must be encoded after a replacement.

The adjustment of the steering angle sensor in the steering column switch cluster only works ro the steering column switch cluster is encoded.

The steering column switch cluster is automatically encoded as the DSC control unit is encoded.

Press ‘No’ to continue

Exactly set front wheels to straight-ahead position. The steering wheel must be positioned horizontally (approximate setting sufficient)

Adjustment of the steering angle was successful

Visually align the steering wheel in horizontal position to check the zero position of the steering angle (wheels in straight ahead position)

Steering angle: 0.000000 degrees

Check whether the displayed steering angle 0 degrees

Press ‘Yes’ to continue

Adjustment of the steering angle was carried out correctly

Initialise run flat indicator if necessary (see owner’s handbook)

Service function finished

Finally, read fault code again

Now there is no DTC on the screen.

Alright, BMW DSC Steering Angle Sensor Calibration is successful with Launch X431 scanner.

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