Difference between revisions of "User:Peter"

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__FORCETOC__
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= WARNING: RESTRICTED ACCESS =
  
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<b><big><big>Huracán (4T) Transmission Electronics</big></big></b>
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Your attempt to access this page is considered UNAUTHORIZED!
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'''ERROR 401: UNAUTHORIZED'''
  
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Your IP address has been logged.
  
  
  
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'''Information'''<br>
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The page applies to the Lamborghini DL800/0BH. This transmission is an electronically-controlled automatic transmission with two clutches for uninterrupted torque delivery during acceleration. It offers various driving modes, from fully automatic to exclusively manual mode, designed to maximize performance. <br>
 
  
  
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'''General Information''' <br>
 
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Caution: When the engine is idling and not in Park (P) or Neutral (N), the vehicle might move, so it's advised to press the brake to prevent unintended movement. The automatic parking lock engages when the engine is off and disengages when a gear is selected. Additionally, there's an emergency release mechanism available for manual disengagement (see owner's/service manual). <br>
 
  
  
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'''Disclaimer and Waiver''' <br>
 
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''By engaging in the procedures outlined herein, applicable only to stock (unmodified) vehicles, you acknowledge and assume full responsibility for any potential consequences or damages. Please be aware that if the vehicle has been modified or altered, our procedure may fail or lead to adverse outcomes. Note that modifications void warranties. Proceed at your own risk!'' <br>
 
  
  
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== Coding ==
 
  
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Due to Coding variants for the DL800/0BH transmission it is recommended to use the coding from the original module when replacing the TCM. VCDS will display coding information within the Long Coding Helper.
 
  
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== Basic Setting ==
 
  
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=== Standstill Adaptation procedure for 0BT/0BH 0DE 0GC (UDS only) ===
 
  
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'''<u>Prerequisites:</u>'''<br>
 
  
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* Transmission fluid temperature greater than 15°C.<br>
 
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** ''Do NOT continue if the temp is out of specs!'' <br>
 
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** '' Use Advanced Measuring Values = [Control Module temperature] (IDE00102)'' <br>
 
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* Selector lever in [P]. <br>
 
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* Engine idle speed, do not press accelerator pedal.<br>
 
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* Parking brake and foot brake applied during the entire procedure.<br>
 
  
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* Note: Not all transmission controllers support this function. <br>
 
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* Be sure all the Prerequisites are followed, important! - The brake pedal must be depressed during the entire procedure. <br>
 
  
  
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'''[Select]''' <br>
 
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'''[02 - Auto Trans]''' <br>
 
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'''[Basic Settings - UDS]''' <br>
 
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Select [Basic settings of transmission] (IDE02903)<br>
 
  
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Next click [Show Measuring Data] and select: <br>
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= Volkswagen SFD, SFD2 & Service Reminder Reset (SRI) with VCDS =
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* [Engine RPM] (IDE00021)<br>
 
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* [Main status of abort code basic setting] (IDE02824)<br>
 
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* [Status of basic setting] (IDE00322)<br>
 
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* [Status of basic setting data for clutch] (IDE02859)<br>
 
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* [Status of basic setting data; gear selector] (IDE02858)<br>
 
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* [Sub-status of abort code basic setting] (IDE02825)<br>
 
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'''Then press [Go!]''' <br>
 
  
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* During the basic setting procedure, there maybe some loud gear shifting noises from the transmission, this is normal. <br>
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== Overview ==
  
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'''Basic settings may not complete successfully if:''' <br>
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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.
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* The fluid temperature gets too hot. <br>
 
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* Brake is released <br>
 
  
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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.
  
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Once complete, there should be an indication of this in the [Status of Basic Settings] (IDE00322). <br>
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== What is SFD and SFD2? ==
  
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Then click - [Done, Go Back] and Check for fault codes. <br>
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'''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.
  
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'''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.
  
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SFD and SFD2 do '''not''' block:
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* Reading fault codes (DTCs)
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* Viewing live data (Measuring Blocks)
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* Performing an Auto-Scan
  
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=== Automatic transmission fluid level check ===
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== How VCDS Works with SFD ==
  
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'''<u>Prerequisites:</u>'''<br>
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VCDS supports SFD by:
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* Notes on Fluid Temperature: <br>
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* Detecting SFD-protected modules
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** Transmission fluid level changes with temperature. <br>
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* Displaying the module's challenge string
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** Valid temperature range: 30°C to 45°C. <br>
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* Allowing manual entry of the corresponding unlock token
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** Overfill risk if too low; underfill risk if too high. <br>
 
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** Allow transmission to cool if vehicle is hot. <br>
 
  
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* Basic Setting Check:
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VCDS does not generate or request unlock tokens itself. Tokens must be obtained separately and are valid for:
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** Vehicle must be stationary and on a level surface. <br>
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* One module only
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** Engine at idle speed. <br>
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* One session (approximately 90 minutes)
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** Parking brake engaged. <br>
 
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** 1st and 2nd gears engaged. <br>
 
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** [ATF temperature] 30°C to 45°C. (IDE00024)<br>
 
  
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* Confirmation: <br>
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'''SFD2 is not supported by VCDS.'''
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** If all conditions are met, the basic setting starts automatically when selected on VCDS. <br>
 
  
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'''<u>Performance Check:</u>''' <br>
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== Manual Unlock Process in VCDS ==
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* Set Vehicle on Lifting Platform: <br>
 
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** Ensure vehicle is stationary and on a flat surface. <br>
 
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** Engage parking brake. <br>
 
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* Start Engine, Allow engine to idle. <br>
 
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* Gear Engagement: <br>
 
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** Engage '1' using the upshift paddle, then press 'M' on central module. <br>
 
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** Engage 'P' on central module. <br>
 
  
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# Open VCDS and connect to the module
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# Attempt a function (e.g., Adaptation or Security Access)
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# Copy the displayed challenge string
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# Submit the challenge to a trusted token provider
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# Paste the returned release token into VCDS
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# The module unlocks for ~90 minutes
  
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'''<u>Check Preconditions</u>''' <br>
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== Resetting the Service Reminder (SRI) ==
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* Transmission Fluid Temperature Check: <br>
 
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** Monitor temperature using VCDS and the Advanced Measuring Values. <br>
 
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** Temperature must be within the valid range (30°C to 45°C). (IDE00024)<br>
 
  
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* Engine RPM Check: <br>
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=== Vehicles Without SFD (Pre-2020) ===
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** Ensure engine speed is within the range (500 to 1000 rpm). (IDE00021)<br>
 
  
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* Vehicle Speed Sensor: <br>
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Older vehicles do not require SFD unlocks. 
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** Vehicle speed should be less than 0.1 km/h. (IDE00075)<br>
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→ [https://www.ross-tech.com/vcds/tour/sri-reset.php SRI Reset Tour Page]
  
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* Shift Position Check: <br>
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=== Vehicles With SFD ===
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** Verify the gear is in 'P' (Position_P_Stop) (IDE00096) <br>
 
  
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Some newer vehicles (e.g., Golf 8, ID.4) have SFD in:
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* '''17-Instruments'''
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* '''5F-Infotainment'''
  
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Steps:
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# Retrieve the challenge string in VCDS
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# Obtain and enter the unlock token
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# Perform the SRI reset within the 90-minute window
  
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'''<u>Start Basic Setting Routine</u>'''<br>
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=== Vehicles With SFD2 / Gateway Filtering ===
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*Using VCDS, choose the Basic Settings:
 
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** [Check ATF level] (IDE08089) <br>
 
  
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* Monitor various parameters during the process (e.g., transmission fluid temperature, clutch values, gear positioner actual positions). <br>
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Newer platforms may also use a diagnostic filter in '''19-Gateway'''.
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** Use "Show measuring data" <br>
 
  
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Steps:
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# Retrieve and unlock 19 using a token
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# In 19, go to Adaptation and set: 
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  <code>DE16611 – Diagnosis filter: temporary deactivation → not active</code>
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# This disables the diagnostic filter for ~20 km
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# Unlock 5F (or other protected modules) using tokens
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# Perform the SRI reset
  
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* Possible Abort Conditions: <br>
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<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>
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** Routine will stop if transmission fluid temperature exceeds 45°C.
 
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**  Possible reasons for routine abort include: <br>
 
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*** Parking brake not engaged. <br>
 
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*** Basic setting not started or active. <br>
 
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*** Gear actuator control position not reached. <br>
 
  
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'''<u>Completion and Repetition</u>'''<br>
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== SFD Requirement Matrix for SRI Reset ==
  
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* Completion: <br>
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{| role="presentation" class="wikitable" style="background:lightgray; text-align:center; width:99%;" border="0"
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** If the basic setting routine completes successfully, switch off the engine. <br>
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|-
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! Service function !! Vehicles Without SFD !! SFD in 17-Instruments !! SFD in 5F-Infotainment !! SFD2 Gateway Filter
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|-
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! SRI (Service Reminder) Reset
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| 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
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|-
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! Is SFD Unlock Required?
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| style="background:limegreen" | No || style="background:orange" | Yes || style="background:orange" | Yes || style="background:red" | Yes in 19 and 5F
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|-
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! Can You Save Adaptation Values?
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| 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
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|}
  
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* Repetition: <br>
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<sup>1</sup> 17 – Instrument Cluster 
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** If the routine is aborted, address the issue (e.g., cool down transmission fluid) and repeat the basic setting. <br>
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<sup>2</sup> 5F – Infotainment / MMI 
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** If necessary, perform an ignition off/on cycle and repeat the routine. <br>
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<sup>3</sup> 19 – CAN Gateway with SFD2 diagnostic filtering
  
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* Additional Information <br>
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== NIx Coding Index Table ==
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** End of Test Module: <br>
 
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*** Ensure all conditions are met before finalizing the transmission fluid level check. <br>
 
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*** Document any issues and corrective actions taken during the process. <br>
 
  
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Some vehicles contain a PR code indicating cybersecurity level:
  
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* Troubleshooting <br>
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{| class="wikitable"
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|-
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! NIx Index !! Cybersecurity Protection !! Software Update Protection !! SFD2 Gateway Present?
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|-
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| NI0 || No || No || No
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|-
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| NI1 || Yes || Yes || No
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|-
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| NI7 || Yes || No || No
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|-
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| NI8 || No || No || Yes
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|-
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| NI9 || Yes (non-UNECE markets) || Yes (non-UNECE markets) || No
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|}
  
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** Diagnostic Link Failure: <br>
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== Factory Tool vs VCDS Comparison ==
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*** If communication to the Mechatronic unit fails, check the diagnostic link and repeat the test. <br>
 
  
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** Event Memory Entries: <br>
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{| class="wikitable"
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*** If the basic setting is aborted due to event memory entries in the Mechatronic unit, follow the test plan to resolve these entries. <br>
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! Feature !! ODIS (Factory Tool) !! VCDS
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|-
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| Token Handling || Online and automatic || (still in development)
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|-
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| Backend Access || Yes || (still in development)
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|-
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| Lockout Behavior || Immediate logout or session close || Timeout (~90 minutes)
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|-
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| Token Source || VW Dealer Portal || (still in development)
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|}
  
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* Final Notes <br>
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== Related Control Module Addresses ==
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** Repeat Basic Setting if Necessary: <br>
 
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*** Ensure all conditions are met and repeat the basic setting if required. <br>
 
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*** Monitor and adjust as per the guidelines provided in the test steps. <br>
 
  
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* '''17 – Instruments''': Cluster, odometer, service interval
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* '''5F – Infotainment''': MMI, media interface
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* '''19 – Gateway''': Network access, diagnostic filter
  
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== Resources ==
  
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* [https://www.ross-tech.com/vcds/tour/sri-reset.php SRI Reset Tour]
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* [https://www.ross-tech.com/vcds/tour/adaptations.php Adaptations Function Tour]
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* [https://forums.ross-tech.com/ Ross-Tech Forums]
  
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<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>
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=== Special Notes ===
 
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[[Category:Transmissions]]
 

Revision as of 14:37, 30 July 2025

WARNING: RESTRICTED ACCESS

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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

  1. Open VCDS and connect to the module
  2. Attempt a function (e.g., Adaptation or Security Access)
  3. Copy the displayed challenge string
  4. Submit the challenge to a trusted token provider
  5. Paste the returned release token into VCDS
  6. The module unlocks for ~90 minutes

Resetting the Service Reminder (SRI)

Vehicles Without SFD (Pre-2020)

Older vehicles do not require SFD unlocks. → SRI Reset Tour Page

Vehicles With SFD

Some newer vehicles (e.g., Golf 8, ID.4) have SFD in:

  • 17-Instruments
  • 5F-Infotainment

Steps:

  1. Retrieve the challenge string in VCDS
  2. Obtain and enter the unlock token
  3. 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:

  1. Retrieve and unlock 19 using a token
  2. In 19, go to Adaptation and set:
 DE16611 – Diagnosis filter: temporary deactivation → not active
  1. This disables the diagnostic filter for ~20 km
  2. Unlock 5F (or other protected modules) using tokens
  3. Perform the SRI reset

Tip: While in R-Mode, you can collect challenge strings for both 19 and 5F and request both tokens at once.

SFD Requirement Matrix for SRI Reset

1 17 – Instrument Cluster 2 5F – Infotainment / MMI 3 19 – CAN Gateway with SFD2 diagnostic filtering

NIx Coding Index Table

Some vehicles contain a PR code indicating cybersecurity level:

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

Feature ODIS (Factory Tool) VCDS
Token Handling Online and automatic (still in development)
Backend Access Yes (still in development)
Lockout Behavior Immediate logout or session close Timeout (~90 minutes)
Token Source VW Dealer Portal (still in development)

Related Control Module Addresses

  • 17 – Instruments: Cluster, odometer, service interval
  • 5F – Infotainment: MMI, media interface
  • 19 – Gateway: Network access, diagnostic filter

Resources

Note: 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.

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