Audi A3 (8L) Brake Electronics (MK20)

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Contents

Coding

Coding is well documented in the factory repair manual for this MK20 ABS system and is not available here at this time.

Basic Setting

Sensor for Steering Angle (G85)

Prerequisites:

  • Start the vehicle.
  • Turn the steering wheel one turn to the right and one turn to the left.
  • Drive in a short distance straight line on a level surface at a speed not higher than 20 km/h.
  • If the steering wheel is straight during the test drive then stop the vehicle with the wheels pointed straight.
  • Ensure that the steering wheel is not moved again.
  • Keep the engine running and do not switch off the ignition.
  • System voltage at least 12.0 V.

[Select]
[03 - Brake Electronics]
[Coding-II - 11]
Enter 40168, to enable the basic setting.
[Do it!]
[Basic Settings - 04]
Group 060
[Go!]
After a successful basic setting, field 1 should say "OK".
[Done, Go Back]
To make sure the basic setting was successful, check the sensor again.
[Measuring Blocks - 08]
Group 004
[Go!]
Check field 1, the value has to be between -4.5 and +4.5 °.


Lateral Acceleration Sensor (G200)

Prerequisites:

  • System voltage at least 12.0 V.
  • Vehicle on level surface


[Coding-II - 11]
Enter 40168, to enable the basic setting.
[Do it!]
[Basic Settings - 04]
Group 063
[Go!]
After a successful basic setting, field 1 should say "OK".
[Done, Go Back]
To make sure the basic setting was successful, check the sensor again.
[Measuring Blocks - 08]
Group 004
[Go!]
Check field 2, the value has to be between -0.5 and +0.5 m/s².


Brake Pressure Sender 1 (G201) and Brake Pressure Sender 2 (G214)

Prerequisites:

  • System voltage at least 12.0 V.
  • Brake pedal not depressed.


[Coding-II - 11]
Enter 40168, to enable the basic setting.
[Do it!]
[Basic Settings - 04]
Group 066
[Go!]
After a successful basic setting, field 1 should say "OK".
[Done, Go Back]
To make sure the basic setting was successful, check the sensor again.
[Measuring Blocks - 08]
Group 005
[Go!]
Check field 1 (G201), the value has to be between -7.0 and +7.0 bar.
Check field 2 (G214), the value has to be between -7.0 and +7.0 bar.


Longitudinal Acceleration Sensor (G251)

Prerequisites:

  • System voltage at least 12.0 V.
  • Vehicle on level surface


[Coding-II - 11]
Enter 40168, to enable the basic setting.
[Do it!]
[Basic Settings - 04]
Group 069
[Go!]
After a successful basic setting, field 1 should say "OK".
[Done, Go Back]
To make sure the basic setting was successful, check the sensor again.
[Measuring Blocks - 08]
Group 006
[Go!]
Check field 1, the value has to be between -0.5 and +0.5 m/s².




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