Volkswagen protection of car diagnosis: Difference between revisions

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Access to the cars control units is secured in such a way that only users with a valid, personal account in the SFD backend of Volkswagen AG or in the system of the respective diagnostic system provider are authorized. In addition, all accesses to SFD-protected control units are individually logged via the SFD backend of Volkswagen AG to ensure traceability at a later stage.<ref name=":0" />  
Access to the cars control units is secured in such a way that only users with a valid, personal account in the SFD backend of Volkswagen AG or in the system of the respective diagnostic system provider are authorized. In addition, all accesses to SFD-protected control units are individually logged via the SFD backend of Volkswagen AG to ensure traceability at a later stage.<ref name=":0" />  


== Origin of SFD ==
==Origin of SFD==
SFD(2) stems from UNECE regulations (Addendum 154 – UN Regulation No. 155, Addendum 155 – UN Regulation No. 156) which were adopted by the UNECE World Forum for Harmonization of Vehicle Regulations on June 24, 2020.<ref name=":1">{{Cite web |last=Sekurit |first=Service |date=2025-05-31 |title=Erweiterter CYBER-SECURITY-SCHUTZ (SFD2/UNECE) bei VAG-
SFD(2) stems from UNECE regulations (Addendum 154 – UN Regulation No. 155, Addendum 155 – UN Regulation No. 156) which were adopted by the UNECE World Forum for Harmonization of Vehicle Regulations on June 24, 2020.<ref name=":1">{{Cite web |last=Sekurit |first=Service |date=2025-05-31 |title=Erweiterter CYBER-SECURITY-SCHUTZ (SFD2/UNECE) bei VAG-
Fahrzeugen ab Modelljahr 2024 |url=https://www.sekurit-service.com/medias/Technical-Bulletin-New-CSM-Funktion-at-VAG-vehicles-DE.pdf?context=bWFzdGVyfGltYWdlc3wxNjYyMTZ8YXBwbGljYXRpb24vcGRmfGFETmlMMmhsT0M4NU5UYzBORFkwTmpFNE5USTJMMVJsWTJodWFXTmhiQ0JDZFd4c1pYUnBiaUJPWlhjZ1ExTk5JRVoxYm10MGFXOXVJR0YwSUZaQlJ5QjJaV2hwWTJ4bGMxOUVSUzV3WkdZfDAyNmI1YjU0YjYyYzdjODA3ZTg3MTkzMDFjMDBjZjZhNTcyYjhmNjcwY2U2NmVlMTYyMGI3MzY2ZThlMTQ2MDg&attachment=true |url-status=live |access-date=2025-05-30}}</ref>  
Fahrzeugen ab Modelljahr 2024 |url=https://www.sekurit-service.com/medias/Technical-Bulletin-New-CSM-Funktion-at-VAG-vehicles-DE.pdf?context=bWFzdGVyfGltYWdlc3wxNjYyMTZ8YXBwbGljYXRpb24vcGRmfGFETmlMMmhsT0M4NU5UYzBORFkwTmpFNE5USTJMMVJsWTJodWFXTmhiQ0JDZFd4c1pYUnBiaUJPWlhjZ1ExTk5JRVoxYm10MGFXOXVJR0YwSUZaQlJ5QjJaV2hwWTJ4bGMxOUVSUzV3WkdZfDAyNmI1YjU0YjYyYzdjODA3ZTg3MTkzMDFjMDBjZjZhNTcyYjhmNjcwY2U2NmVlMTYyMGI3MzY2ZThlMTQ2MDg&attachment=true |url-status=live |access-date=2025-05-30}}</ref>  
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==Consumer impact summary==
==Consumer impact summary==


=== User Freedom ===
===User Freedom===


== Why is SFD(2) a problem? ==
==Why is SFD(2) a problem?==


* '''Restricted Access:''' Only authorized users can access or modify key vehicle systems; independent mechanics and owners will be locked out from any kind of repair which requires interacting with the cars ECU.
*'''Restricted Access:''' Only authorized users can access or modify key vehicle systems; independent mechanics and owners will be locked out from any kind of repair which requires interacting with the cars ECU.
* '''Dealer Dependence:''' Owners are forced to rely on Volkswagen dealerships for repairs and updates, leading to higher costs and less flexibility.
*'''Dealer Dependence:''' Owners are forced to rely on Volkswagen dealerships for repairs and updates, leading to higher costs and less flexibility.
* '''Aftermarket Barriers:''' DIY and independent repairs or upgrades are blocked, even for simple tasks.
*'''Aftermarket Barriers:''' DIY and independent repairs or upgrades are blocked, even for simple tasks.
* '''Privacy Concerns:''' All access is logged, raising data privacy issues.
*'''Privacy Concerns:''' All access is logged, raising data privacy issues.
* '''Ownership Issues:''' SFD limits what owners can do with their cars, challenging the right to repair.
*'''Ownership Issues:''' SFD limits what owners can do with their cars, challenging the right to repair.


=== Business Model ===
===Business Model===
Volkswagen AG SFD(2) protection can be bypassed by purchasing an unlock token which can be used in the dealer specific software. A single token is available for $50 USD. Each activation token is uniquely assigned to a specific control unit and is valid for a single use only.<ref name=":2">{{Cite web |last=VAGupdate |date=2025-05-31 |title=SFD Token |url=https://vagupdate.com/sfd-token |access-date=2025-05-31}}</ref>
SFD(2) protection can be bypassed by purchasing an unlock token which only can be used in the dealer specific software. A single token is available for $50 USD. Each activation token is uniquely assigned to a specific control unit and is valid for a single use only.<ref name=":2">{{Cite web |last=VAGupdate |date=2025-05-31 |title=SFD Token |url=https://vagupdate.com/sfd-token |access-date=2025-05-31}}</ref>


During Guided Fault Finding procedures, SFD-protected control units are automatically re-locked at the conclusion of the diagnostic session. If this does not occur, the system will automatically re-lock the control unit 90 minutes after activation.<ref name=":2" />
During Guided Fault Finding procedures, SFD-protected control units are automatically re-locked at the conclusion of the diagnostic session. If this does not occur, the system will automatically re-lock the control unit 90 minutes after activation.<ref name=":2" />


=== Market Control ===
===Market Control===


=== Currently affected car models from Volkswagen AG<ref>{{Cite web |last=PCI-Diagnose-Technik GmbH & Co. KG |date=2025-05-31 |title=SFD2 / UNECE - Erweiterter SFD Schutz |url=https://forum.vcdspro.de/index.php?/wiki/misc/allgemeine-informationen/sfd2-unece-erweiterter-sfd-schutz-r68/#was-ist-sfd-2 |access-date=2025-05-31}}</ref> ===
===Currently affected car models from Volkswagen AG<ref>{{Cite web |last=PCI-Diagnose-Technik GmbH & Co. KG |date=2025-05-31 |title=SFD2 / UNECE - Erweiterter SFD Schutz |url=https://forum.vcdspro.de/index.php?/wiki/misc/allgemeine-informationen/sfd2-unece-erweiterter-sfd-schutz-r68/#was-ist-sfd-2 |access-date=2025-05-31}}</ref>===
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== Audi ==
==Audi==


* Audi A1 (GB) from approx. production date March 2024
*Audi A1 (GB) from approx. production date March 2024
* Audi A3 (8Y) from model year 2025
*Audi A3 (8Y) from model year 2025
* Audi A4 (8W) from model year 2024
*Audi A4 (8W) from model year 2024
* Audi A4 Avant (F4) from model year 2024
*Audi A4 Avant (F4) from model year 2024
* Audi A5 (F5) from model year 2024
*Audi A5 (F5) from model year 2024
* Audi A6 (4A) from model year 2024
*Audi A6 (4A) from model year 2024
* Audi A6 Avant (F2) from model year 2024
*Audi A6 Avant (F2) from model year 2024
* Audi A7 (4K) from model year 2024
*Audi A7 (4K) from model year 2024
* Audi A8 (4N) from model year 2024
*Audi A8 (4N) from model year 2024
* Audi Q2 (GA) from approx. production date March 2024
*Audi Q2 (GA) from approx. production date March 2024
* Audi Q3 (F3) from approx. production date March 2024
*Audi Q3 (F3) from approx. production date March 2024
* Audi Q4 (F4) from approx. production date November 2024
*Audi Q4 (F4) from approx. production date November 2024
* Audi Q5 (FY) from model year 2024
*Audi Q5 (FY) from model year 2024
* Audi Q7 (4M) from approx. production start August 2023
*Audi Q7 (4M) from approx. production start August 2023
* Audi Q8 (4M) from approx. production start August 2023
*Audi Q8 (4M) from approx. production start August 2023
* Audi Q8 e-tron (GE) from model year 2024
*Audi Q8 e-tron (GE) from model year 2024
* Audi e-tron GT (FW) from model year 2024
*Audi e-tron GT (FW) from model year 2024
* Audi e-tron GT (F8) from model year 2024
*Audi e-tron GT (F8) from model year 2024


== Volkswagen ==
==Volkswagen==


* VW Arteon (3H) from model year 2024
*VW Arteon (3H) from model year 2024
* VW Crafter (SY) from model year 2025
*VW Crafter (SY) from model year 2025
* VW Caddy (SB) from model year 2025
*VW Caddy (SB) from model year 2025
* VW Golf 8 (CD), (CG) from approx. production start April 2024
*VW Golf 8 (CD), (CG) from approx. production start April 2024
* VW Passat (B9) from model year 2024
*VW Passat (B9) from model year 2024
* VW Polo (AE1) from approx. production start March 2024
*VW Polo (AE1) from approx. production start March 2024
* VW T-Cross (D31)
*VW T-Cross (D31)
* VW Touran (5T) from approx. production start March 2024
*VW Touran (5T) from approx. production start March 2024
* VW T-Roc (D11, AC8) from approx. production start March 2024
*VW T-Roc (D11, AC8) from approx. production start March 2024
* VW Taigo (CS) from approx. production start March 2024
*VW Taigo (CS) from approx. production start March 2024
* VW Tiguan ALLSPACE (BJ2) from approx. production start February 2024
*VW Tiguan ALLSPACE (BJ2) from approx. production start February 2024
* VW Tiguan (CT) from model year 2024
*VW Tiguan (CT) from model year 2024
* VW Touareg RC
*VW Touareg RC
* VW Touareg (CR) from model year 2024
*VW Touareg (CR) from model year 2024
* VW T7 (ST) from model year 2025
*VW T7 (ST) from model year 2025
* VW ID3 (E12) from model year 2025
*VW ID3 (E12) from model year 2025
* VW ID4 (E21) from approx. production start January 2024
*VW ID4 (E21) from approx. production start January 2024
* VW ID5 (E39) from approx. production start January 2024
*VW ID5 (E39) from approx. production start January 2024
* VW ID.7 (ED) from model year 2024
*VW ID.7 (ED) from model year 2024
* VW ID Buzz (EB) from model year 2025
*VW ID Buzz (EB) from model year 2025


== Seat / Cupra ==
==Seat / Cupra==


* Seat Arona (KJ7) from approx. production start February 2024
*Seat Arona (KJ7) from approx. production start February 2024
* Seat Ateca (KBP, KHP) with PR-No.: NI7
*Seat Ateca (KBP, KHP) with PR-No.: NI7
* Seat Born (K11) from model year 2025
*Seat Born (K11) from model year 2025
* Seat Formentor (KM7) from model year 2025
*Seat Formentor (KM7) from model year 2025
* Seat Ibiza (KJ1) from approx. production start February 2024
*Seat Ibiza (KJ1) from approx. production start February 2024
* Seat Leon (KL) from model year 2025
*Seat Leon (KL) from model year 2025
* Seat Leon (KU) from model year 2025
*Seat Leon (KU) from model year 2025


== Skoda ==
==Skoda==


* Skoda Enyaq (5A) with PR-No.: NI1 or NI9
*Skoda Enyaq (5A) with PR-No.: NI1 or NI9
* Skoda Fabia (PJ) from model year 2024
*Skoda Fabia (PJ) from model year 2024
* Skoda Fabia (6P) from model year 2024
*Skoda Fabia (6P) from model year 2024
* Skoda Kamiq (NW) from model year 2024
*Skoda Kamiq (NW) from model year 2024
* Skoda Kamiq (NW4) from approx. production start January 2024
*Skoda Kamiq (NW4) from approx. production start January 2024
* Skoda Scala (NW1) from approx. production date January 2024
*Skoda Scala (NW1) from approx. production date January 2024
* Skoda Karoq (NU) from approx. production date March 2024
*Skoda Karoq (NU) from approx. production date March 2024
* Skoda Octavia (NX) with PR-No.: GP1
*Skoda Octavia (NX) with PR-No.: GP1


==Incidents==
==Incidents==