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= WARNING: RESTRICTED ACCESS =
= 0BK Transmission (ZF 8HP-55) – Standstill Basic Settings =
__FORCETOC__


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== Application ==
'''ERROR 401: UNAUTHORIZED'''
This procedure performs the '''Fast adaptation''' (standstill adaptation) routine for the ZF 0BK 8-speed automatic transmissions with UDS-based control modules.


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''Note: Not all 0BK transmission controllers support this function.''


== Prerequisites ==
* Vehicle stationary, engine idling. 
* Parking brake applied and foot brake held firmly during the entire procedure. 
* Selector lever in '''D'''. 
* Transmission fluid temperature between '''50 °C and 95 °C'''
* Battery charger/maintainer connected. 
* No fault codes related to transmission or engine torque request.


== When to Perform ==
* After mechatronic unit replacement 
* After clutch or internal transmission repair 
* After ATF service 
* When experiencing harsh or irregular shifting


------------------------------------------------------------
== Procedure ==
[Select] → [02-Auto Trans] 
'''[Basic Settings - UDS]'''


__FORCETOC__
* From the Basic Settings drop-down list, select '''Fast/Quick Adaption (IDE07217)'''
= Readiness Test (UDS only) =
* Click '''[Show Measuring Data]''' and add:
* This Tech Tip demonstrates how to perform the [Automatic test sequence] for UDS-based Engine Control Modules (ECMs) using VCDS.
  - Engine speed (IDE00021)
* Basic Setting performs the required Readiness Tests on modern VW/Audi vehicles equipped with UDS protocol engine controllers.
  - Fast_adaption; cancellation condition (IDE07220)
* Use of this procedure is typically for after repairs or component replacement affecting emissions-related systems, or after clearing DTCs.
  - ATF temperature (IDE00024)
* Apply the parking brake, hold the brake pedal, and move the selector from '''[P]''' to '''[D]''' 
* Press '''[Go!]''' to start the Basic Setting.


==== Special Tools ====
=== During the Procedure ===
* VCDS (VAG-COM Diagnostic System)
* Engine speed will increase to about 1,200 rpm 
* Light jolts or lurching may occur; this is normal
* The procedure typically runs for 5–10 minutes
* Continue holding the brake; do not release!
* Monitor ATF temperature remains within the specified range.


==== Prerequisites ====
=== The Basic Setting may abort if: ===
* Engine must be running
* Brake pedal is released or selector not in [D]
* All electrical consumers OFF (A/C, headlights, rear defrost, seat heaters, etc.)
* ATF temperature outside 50–95 °C 
* No active Diagnostic Trouble Codes (DTCs) – Clear all fault codes prior to starting the test
* TCM not standstill-capable (engine speed does not rise to ~ 1,200 rpm)
* Engine coolant temperature must be at least 80°C (176°F)
* <span style="color:red;">Must be performed outside or in a well vented area only!</span>


==== Workshop Procedure with VCDS ====
== Completion ==
When the procedure finishes '''(Finished correctly)''':
* Engine speed returns to normal idle. 
* Shift selector to '''[P]''' when prompted. 
* Click '''[Done, Go Back]''' 
* Read and clear any fault codes if necessary.
* Road  test the vehicle, normally


* Connect to the vehicle using VCDS.
== Notes ==
 
* Always confirm ATF level and temperature before performing adaptation.
* Go to '''[01 - Engine]'''
* Use official factory information if unsure whether the control module supports this function.
 
* Check for and clear any fault codes.
 
* Click on the '''[Basic Settings]''' button.
 
* Select '''[Automatic test sequence]''' or '''[Automatic test procedure]''' from the available list.
 
* Click on the '''[Show Measuring Data]''' checkbox and include the following Measuring Values:
 
  {| class="wikitable"
  |-
  ! Measuring Value !! Description
  |-
  | IDE00450 || '''Operating Instructions''' – ''Follow all prompts provided here''
  |-
  | IDE00451 || '''Currently Running Routine''' – ''Indicates the test currently in progress''
  |-
  | IDE00030 || '''Status of Actuator Test''' – ''Displays overall status of test procedure''
  |-
  | IDE00727 || '''Test Steps Still to Be Performed''' – ''Should count down to 0 when complete''
  |-
  | IDE00021 || '''Engine Speed''' – ''Follow any required RPM prompts shown in Operating Instructions''
  |-
  | IDE00025 || '''Coolant Temperature''' – ''Should be at or above 80°C before beginning''
  |}
 
* Click the '''[Go]''' button to begin the Basic Setting procedure.
 
* When prompted, '''press and hold both the brake and accelerator pedals simultaneously.''' Keep them pressed until the test finishes.
 
* When the test completes successfully, the '''IDE00450 [Operating Instructions]''' field will display: 
  ''''System OK''''  or  ''''Finished correctly''''
 
 
==== Special Notes ====
 
# The duration of the Automatic Test Sequence may vary depending on vehicle platform and engine type.
# If the sequence fails or does not complete, verify that all prerequisites are met, especially coolant temperature and fault-free status.
# This function is only available in UDS-based engine control modules. Non-UDS controllers use a different Readiness procedure, see Repair Manual.
# If the [Go] button is grayed out or unavailable, ensure that the engine is running and that the selected test is supported by the ECU.
 
[[Category:Tech Tips]]

Latest revision as of 22:43, 7 November 2025

0BK Transmission (ZF 8HP-55) – Standstill Basic Settings

Application

This procedure performs the Fast adaptation (standstill adaptation) routine for the ZF 0BK 8-speed automatic transmissions with UDS-based control modules.

Note: Not all 0BK transmission controllers support this function.

Prerequisites

  • Vehicle stationary, engine idling.
  • Parking brake applied and foot brake held firmly during the entire procedure.
  • Selector lever in D.
  • Transmission fluid temperature between 50 °C and 95 °C
  • Battery charger/maintainer connected.
  • No fault codes related to transmission or engine torque request.

When to Perform

  • After mechatronic unit replacement
  • After clutch or internal transmission repair
  • After ATF service
  • When experiencing harsh or irregular shifting

Procedure

[Select] → [02-Auto Trans] [Basic Settings - UDS]

  • From the Basic Settings drop-down list, select Fast/Quick Adaption (IDE07217)
  • Click [Show Measuring Data] and add:
 - Engine speed (IDE00021)
 - Fast_adaption; cancellation condition (IDE07220)
 - ATF temperature (IDE00024)
  • Apply the parking brake, hold the brake pedal, and move the selector from [P] to [D]
  • Press [Go!] to start the Basic Setting.

During the Procedure

  • Engine speed will increase to about 1,200 rpm
  • Light jolts or lurching may occur; this is normal
  • The procedure typically runs for 5–10 minutes
  • Continue holding the brake; do not release!
  • Monitor ATF temperature remains within the specified range.

The Basic Setting may abort if:

  • Brake pedal is released or selector not in [D]
  • ATF temperature outside 50–95 °C
  • TCM not standstill-capable (engine speed does not rise to ~ 1,200 rpm)

Completion

When the procedure finishes (Finished correctly):

  • Engine speed returns to normal idle.
  • Shift selector to [P] when prompted.
  • Click [Done, Go Back]
  • Read and clear any fault codes if necessary.
  • Road test the vehicle, normally

Notes

  • Always confirm ATF level and temperature before performing adaptation.
  • Use official factory information if unsure whether the control module supports this function.
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