Siemens PCR2.1 — supported tools

← ECU catalogue

Siemens PCR2.1 engine ECU with confirmed AutoTuner support via Bench, Boot, OBD. MCU variants: TC1796. Reading and writing follow the protocol scope; match the ECU identification to a supported variant before use.

Last changed: 2026-10-31 · Card revision 2

Compatibility depends on ECU HW/SW, protocol and active licence. A tool missing from this list does not imply lack of support.

Tool

Connection

Operations

Scope and notes

AutoTuner

Bench

Read (type unspecified)
Write

PCR2.1; MCU variant TC1796

Reading and writing. Scope covers AutoTuner-supported applications for the specified variant.

AutoTuner

Boot

Read (type unspecified)
Write

PCR2.1; MCU variant TC1796

Reading and writing. Scope covers AutoTuner-supported applications for the specified variant.

AutoTuner

OBD

Read (type unspecified)
Write

PCR2.1; MCU variant TC1796

Reading and writing. Scope covers AutoTuner-supported applications for the specified variant.

CMDFlash

OBD

Operations unspecified

PCR2.1; AUDI A1; 1.6 TDI 66KW 90HP CAY PCR2.1 CAN; AUDI A1; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; AUDI A3; 1.6 TDI 66KW 90HP CAY PCR2.1 CAN; AUDI A3; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; SEAT ALTEA; 1.6 TDI 66KW 90HP CAY PCR2.1 CAN; SEAT ALTEA; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; SEAT IBIZA; 1.6 TDI 66KW 90HP CAY PCR2.1 CAN; SEAT IBIZA; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; SEAT LEON; 1.6 TDI 66KW 90HP CAY PCR2.1 CAN; SEAT LEON; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; SKODA FABIA; 1.6 TDI 55KW 75HP CAY PCR2.1 CAN; SKODA FABIA; 1.6 TDI 66KW 90HP CAY PCR2.1 CAN; SKODA FABIA; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; SKODA OCTAVIA; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; SKODA RAPID; 1.6 TDI 66KW 90HP CAY PCR2.1 CAN; SKODA RAPID; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; SKODA ROOMSTER; 1.6 TDI 66KW 90HP CAY PCR2.1 CAN; SKODA ROOMSTER; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; SKODA SUPERB; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; SKODA YETI; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; VOLKSWAGEN CADDY; 1.6 TDI 55KW 75HP CAY PCR2.1 CAN; VOLKSWAGEN CADDY; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; VOLKSWAGEN GOLF VI; 1.6 TDI 66KW 90HP CAY PCR2.1 CAN; VOLKSWAGEN GOLF VI; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; VOLKSWAGEN JETTA; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; VOLKSWAGEN PASSAT; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; VOLKSWAGEN POLO; 1.6 TDI 55KW 75HP CAY PCR2.1 CAN; VOLKSWAGEN POLO; 1.6 TDI 66KW 90HP CAY PCR2.1 CAN; VOLKSWAGEN POLO; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; VOLKSWAGEN TIGUAN; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; VOLKSWAGEN TOURAN; 1.6 TDI 66KW 90HP CAY PCR2.1 CAN; VOLKSWAGEN TOURAN; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN; VOLKSWAGEN VENTO; 1.6 TDI 77KW 105HP CAY PCR2.1 CAN

Mode compatibility confirmed by the official CMDFlash list. The corresponding protocol package is required; match functions and ECU variant in CMDFlash software.

CMDFlash

Bench

Operations unspecified

SIEMENS PCR2.1 TC1796; AUDI; SEAT; SKODA; VOLKSWAGEN

Mode compatibility confirmed by the official CMDFlash list. The corresponding protocol package is required; match functions and ECU variant in CMDFlash software.

CMDFlash

Boot

Operations unspecified

SIEMENS PCR2.1 TC1796; AUDI; SEAT; SKODA; VOLKSWAGEN

Mode compatibility confirmed by the official CMDFlash list. The corresponding protocol package is required; match functions and ECU variant in CMDFlash software.

DFOX

Bench

Read (type unspecified)
Write

Audi; Audi A1 1.6l 16V TDI; Audi A3 1.6l 16V TDI; Seat; Seat Altea 1.6l 16V TDI; Seat Ibiza 16l 16V TDI; Seat Leon 1.6l 16V TDI; Skoda; Skoda Fabia 1.6l 16V TDI; Skoda Octavia 1.6l 16V TDI; Skoda Rapid 1.6l TDI; Skoda Roomster 1.6l 16V TDI; Skoda Yeti 1.6l 16V TDI; Volkswagen VW; Volkswagen VW Beetle 1.6l 16V TDI; Volkswagen VW Caddy 1.6l 16V TDI; Volkswagen VW Golf VI 1.6l 16V TDI; Volkswagen VW Jetta 1.6l 16V TDI; Volkswagen VW Passat 1.6l 16V TDI; Volkswagen VW Polo 1.6l 16V TDI; Volkswagen VW Touran 1.6l 16V TDI; PCR2.1; MCU TC1796

Operations confirmed in the DFOX list for the specified application and variant. Memory designation in the list: EEPROM. Updates published since October 2025 require DFOX V2 software.

DFOX

Boot

Read (type unspecified)
Write

Operations confirmed in the DFOX list for the specified application and variant. Memory designation in the list: EEPROM. Updates published since October 2025 require DFOX V2 software.

DFOX

OBD

Read (type unspecified)
Write

Operations confirmed in the DFOX list for the specified application and variant. Memory designation in the list: EEPROM. Updates published since October 2025 require DFOX V2 software.

Flex

OBD

Operations unspecified

PCR2.1; Volkswagen (VW) Caddy IV 1.6L TDI CAYD (2015–2020); Volkswagen (VW) Caddy IV 1.6L TDI CAYE (2015–2020); Volkswagen (VW) Golf (VII) AU 1.6L TDI CAYC (2012–2019); Volkswagen (VW) Golf Cabrio VI 1.6L TDI CAYC (2008–2013); Volkswagen (VW) Golf Plus V 1.6L TDI CCSA (2003–2009); Volkswagen (VW) Golf Plus VI 1.6L TDI CAYB (2008–2012); Volkswagen (VW) Golf VI 1.6L TDI CAYB (2006–2014); Volkswagen (VW) Golf Variant V 1.6L TDI CCSA (2003–2009); Volkswagen (VW) Golf Variant VI 1.6L TDI CAYB (2008–2012); Volkswagen (VW) Golf Variant VI 1.6L TDI CAYC (2008–2012); Volkswagen (VW) Jetta A5 1.6L TDI CAYB (2005–2010); Volkswagen (VW) Jetta A5 1.6L TDI CAYC (2005–2010); Volkswagen (VW) Jetta A6 1.6L TDI CAYC (2010–2018); Volkswagen (VW) New Beetle 5C1-5C2 1.6L TDI CAYC (2011–2019); Volkswagen (VW) Passat (VII) B7 1.6L TDI CAYC (2010–2014); Volkswagen (VW) Passat B6 1.6L TDI CAYC (2005–2010); Volkswagen (VW) Passat Variant B6 1.6L TDI CAYC (2005–2010); Volkswagen (VW) Passat Variant B7 1.6L TDI CAYC (2010–2014); Volkswagen (VW) Polo Cross V Typ 6R 1.6L TDI CAYA (2009–2017); Volkswagen (VW) Polo Cross V Typ 6R 1.6L TDI CAYB (2009–2017); Volkswagen (VW) Polo Cross V Typ 6R 1.6L TDI CAYC (2009–2017); Volkswagen (VW) Polo V Typ 6R 1.6L TDI CAYA (2009–2017); Volkswagen (VW) Polo V Typ 6R 1.6L TDI CAYB (2009–2017); Volkswagen (VW) Polo V Typ 6R 1.6L TDI CAYC (2009–2017); Volkswagen (VW) Sagitar I 1.6L TDI CAYB (2006–2012); Volkswagen (VW) Sagitar I 1.6L TDI CAYC (2006–2012); Volkswagen (VW) Sagitar II 1.6L TDI CAYC (2012–2019); Volkswagen (VW) Touran 1T3 1.6L TDI CAYB (2010–2015); Volkswagen (VW) Touran 1T3 1.6L TDI CAYC (2010–2015); Volkswagen (VW) Vento A05 1.6L TDI CAYB (2010–2022); Volkswagen (VW) Vento A05 1.6L TDI CAYC (2010–2022); protocol 22990000; OBD

Confirmed compatibility for the specified protocol and applications. Requires one of these packages: FLS0.1M, FLS0.1S, FLS0.5M, FLS0.5S. Check this Flex protocol for detailed reading, writing and memory functions.

Flex

Boot

Operations unspecified

Confirmed compatibility for the specified protocol and applications. Requires one of these packages: FLS0.10M, FLS0.10S, FLS0.5M, FLS0.5S. Check this Flex protocol for detailed reading, writing and memory functions.

Flex

Bench

Operations unspecified

Confirmed compatibility for the specified protocol and applications. Requires one of these packages: FLS0.10M, FLS0.10S, FLS0.1M, FLS0.1S, FLS0.5M, FLS0.5S. Check this Flex protocol for detailed reading, writing and memory functions.

Flex

OBD

Operations unspecified

SIMOS PCR-2.1; Skoda Fabia II 5J/B 1.6L TDI CAYA (2007–2014); Skoda Fabia II 5J/B 1.6L TDI CAYB (2007–2014); Skoda Fabia II 5J/B 1.6L TDI CAYC (2007–2014); Skoda Octavia (II) 1Z 1.6L TDI CAYC (2004–2012); Skoda Octavia (III) 5E 1.6L TDI CLHB (2012–2020); Skoda Praktik 5J 1.6L TDI CAYB (2007–2015); Skoda Rapid NH 1.6L TDI CAYB (2012–2019); Skoda Rapid NH 1.6L TDI CAYC (2012–2019); Skoda Rapid NH 1.6L TDI CR CLNA (2012–2019); Skoda Roomster 5J 1.6L TDI CAYB (2006–2015); Skoda Roomster 5J 1.6L TDI CAYC (2006–2015); Skoda Superb (II) B6 1.6L TDI CAYC (2008–2015); Skoda Yeti 5L 1.6L TDI CAYC (2009–2017); protocol 22990000; OBD

Flex

Boot

Operations unspecified

Flex

Bench

Operations unspecified

Flex

OBD

Operations unspecified

SIMOS PCR2.1; Seat Altea Freetrack I 1.6L TDI CAYC (2007–2015); Seat Altea I 1.6L TDI CAYB (2004–2015); Seat Altea I 1.6L TDI CAYC (2004–2015); Seat Altea XL I 1.6L TDI CAYB (2006–2015); Seat Altea XL I 1.6L TDI CAYC (2006–2015); Seat Ibiza IV 1.6L TDI CAYB (2008–2017); Seat Ibiza IV 1.6L TDI CAYC (2008–2017); Seat Ibiza IV 1.6L TDI CR CLNA (2008–2017); Seat Ibiza SC IV 1.6L TDI CAYB (2008–2017); Seat Ibiza SC IV 1.6L TDI CAYC (2008–2017); Seat Ibiza SC IV 1.6L TDI CR CLNA (2008–2017); Seat Ibiza ST IV 1.6L TDI CAYB (2008–2017); Seat Ibiza ST IV 1.6L TDI CAYC (2008–2017); Seat Ibiza ST IV 1.6L TDI CR CLNA (2008–2017); Seat Leon (III) 5F 1.6L TDI CLHB (2012–2020); Seat Leon II 1.6L TDI CAYB (2005–2012); Seat Leon II 1.6L TDI CAYC (2005–2012); Seat Toledo KG 1.6L TDI CAYB (2012–2019); Seat Toledo KG 1.6L TDI CAYC (2012–2019); Seat Toledo KG 1.6L TDI CR CLNA (2012–2019); protocol 22990000; OBD

Flex

Boot

Operations unspecified

Flex

Bench

Operations unspecified

Flex

OBD

Operations unspecified

Simos PCR2.1; Audi A1 8X 1.6L TDI CAYB (2010–2017); Audi A1 8X 1.6L TDI CAYC (2010–2017); Audi A3 (II) 8P 1.6L TDI CAYB (2003–2013); Audi A3 (II) 8P 1.6L TDI CAYC (2003–2013); Audi A3 (II) 8P 1.6L TDI CR CCSA (2003–2013); protocol 22990000; OBD

Flex

Boot

Operations unspecified

Flex

Bench

Operations unspecified

PCMflash

OBD

Read (type unspecified)
Write
Checksum

Module 57; VAG; 1.6L TDI (PCR2.1)

Requires PCMflash module 57 licence and a compatible J2534 interface. Writing requires prior ECU unlocking as specified by the module.

PCMflash

Boot

Read (type unspecified)
Write

Module 57; VAG; PCR2.1 (EEPROM/UNLOCK/BSL)

Requires PCMflash module 57 licence and a compatible J2534 interface. The module workflow includes unlocking. Listed operations apply to EEPROM.

Pinout Bench

No Bench pinout has been added.

Pinout Boot

No Boot pinout has been added.

Update history

Revision 2 · 2026-10-31
Revision 1 · 2026-10-31