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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]'''


* 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.
 
 
 
 
 
 
 
= Volkswagen SFD, SFD2 & Service Reminder Reset (SRI) with VCDS =
 
== Overview ==
 
Volkswagen Group introduced SFD ('''Schutz der Fahrzeugdiagnose''' – Protection of Vehicle Diagnostics) in 2020 to enhance cybersecurity and control access to vehicle software. In 2024, a second layer called '''SFD2''' was introduced, requiring cryptographic validation for critical changes.
 
This page explains how VCDS interacts with SFD and SFD2 systems and provides step-by-step instructions for resetting the Service Reminder (SRI) on protected vehicles.
 
== What is SFD and SFD2? ==
 
'''SFD (v1)''' restricts coding, adaptations, and other “write” functions unless a one-time unlock token is used. VCDS supports this system using a manual token entry method.
 
'''SFD2 (v2)''' is used in 2024+ vehicles and protects specific data changes using encrypted, per-operation validation. SFD2 requires Volkswagen’s online infrastructure and is currently unsupported by VCDS.
 
SFD and SFD2 do '''not''' block:
* Reading fault codes (DTCs)
* Viewing live data (Measuring Blocks)
* Performing an Auto-Scan
 
== How VCDS Works with SFD ==
 
VCDS supports SFD by:
* Detecting SFD-protected modules
* Displaying the module's challenge string
* Allowing manual entry of the corresponding unlock token
 
VCDS does not generate or request unlock tokens itself. Tokens must be obtained separately and are valid for:
* One module only
* One session (approximately 90 minutes)
 
'''SFD2 is not supported by VCDS.'''
 
== Manual Unlock Process in VCDS ==
 
# Open VCDS and connect to the module
# Attempt a function (e.g., Adaptation or Security Access)
# Copy the displayed challenge string
# Submit the challenge to a trusted token provider
# Paste the returned release token into VCDS
# The module unlocks for ~90 minutes
 
== Resetting the Service Reminder (SRI) ==
 
=== Vehicles Without SFD (Pre-2020) ===
 
Older vehicles do not require SFD unlocks.   
→ [https://www.ross-tech.com/vcds/tour/sri-reset.php SRI Reset Tour Page]
 
=== Vehicles With SFD ===
 
Some newer vehicles (e.g., Golf 8, ID.4) have SFD in:
* '''17-Instruments'''
* '''5F-Infotainment'''
 
Steps:
# Retrieve the challenge string in VCDS
# Obtain and enter the unlock token
# Perform the SRI reset within the 90-minute window
 
=== Vehicles With SFD2 / Gateway Filtering ===
 
Newer platforms may also use a diagnostic filter in '''19-Gateway'''.
 
Steps:
# Retrieve and unlock 19 using a token
# In 19, go to Adaptation and set: 
  <code>DE16611 – Diagnosis filter: temporary deactivation → not active</code>
# This disables the diagnostic filter for ~20 km
# Unlock 5F (or other protected modules) using tokens
# Perform the SRI reset
 
<span style="color:orange;"><b>Tip:</b> While in R-Mode, you can collect challenge strings for both 19 and 5F and request both tokens at once.</span>
 
== SFD Requirement Matrix for SRI Reset ==
 
{| role="presentation" class="wikitable" style="background:lightgray; text-align:center; width:99%;" border="0"
|-
! Service function !! Vehicles Without SFD !! SFD in 17-Instruments !! SFD in 5F-Infotainment !! SFD2 Gateway Filter
|-
! SRI (Service Reminder) Reset
| style="background:limegreen" | Just perform SRI reset || style="background:orange" | Unlock 17 first || style="background:orange" | Unlock 5F first || style="background:red" | Unlock 19, then unlock 5F
|-
! Is SFD Unlock Required?
| style="background:limegreen" | No || style="background:orange" | Yes || style="background:orange" | Yes || style="background:red" | Yes in 19 and 5F
|-
! Can You Save Adaptation Values?
| style="background:limegreen" | Yes || style="background:orange" | Yes, after unlocking 17 || style="background:orange" | Yes, after unlocking 5F || style="background:red" | Unlock 19 to disable filter, then unlock other modules
|}
 
<sup>1</sup> 17 – Instrument Cluster 
<sup>2</sup> 5F – Infotainment / MMI 
<sup>3</sup> 19 – CAN Gateway with SFD2 diagnostic filtering
 
== NIx Coding Index Table ==
 
Some vehicles contain a PR code indicating cybersecurity level:
 
{| class="wikitable"
|-
! NIx Index !! Cybersecurity Protection !! Software Update Protection !! SFD2 Gateway Present?
|-
| NI0 || No || No || No
|-
| NI1 || Yes || Yes || No
|-
| NI7 || Yes || No || No
|-
| NI8 || No || No || Yes
|-
| NI9 || Yes (non-UNECE markets) || Yes (non-UNECE markets) || No
|}
 
== Factory Tool vs VCDS Comparison ==
 
{| class="wikitable"
! Feature !! ODIS (Factory Tool) !! VCDS
|-
| Token Handling || Online and automatic || Manual (offline)
|-
| Backend Access || Yes || No
|-
| Lockout Behavior || Immediate logout or session close || Timeout (~90 minutes)
|-
| Token Source || VW Dealer Portal || Third-party vendor
|}
 
== Related Control Module Addresses ==
 
* '''17 – Instruments''': Cluster, odometer, service interval
* '''5F – Infotainment''': MMI, media interface
* '''19 – Gateway''': Network access, diagnostic filter
 
== Resources ==
 
* [https://www.ross-tech.com/vcds/tour/sri-reset.php SRI Reset Tour]
* [https://www.ross-tech.com/vcds/tour/adaptations.php Adaptations Function Tour]
* [https://forums.ross-tech.com/ Ross-Tech Forums]
 
<span style="color:#d93025;"><b>Note:</b> If readiness or service reset functions fail, ensure the engine control unit software is up to date and that a full OBD drive cycle has been completed.</span>

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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