One of obdii365.com customers had en error with foxflash programmer when reading VW Med17.1 ECU. Fox failed to read and gave an error bench not supported.
Here’s the solution.
The error indicates your ECU has been updated, foxflash is telling you to read/write in Boot Tricore.
How to read BOSCH MED17.1 [ TC1796 INT.F.] – VW, Audi, Seat, Skoda in boot mode?
Step 1: Read and Write ECU
Connect with the multifunction cable the following pinout and the boot shown below.
Use the driver:
→ TOOLS BOOT MODE
→ INFINEON TRICORE Boot
→ SAK TC1796
Step 2: Password Search
Disable the boot mode by unsoldering the grey wire. Connect the pinout below.
Use the driver:
→ TOOLS BOOT MODE
→ INFINEON TRICORE Tool Password
→ OBD PASSWORD TPROT V08 VAG
→ Click on “Find Password” and follow the software messages.
If the password was found with this system, go directly to the boot step to read and write the control unit.
Otherwise, see next step.
Step 3: Password Search
Connect the pinout below.
Use the driver:
→ TOOLS BOOT MODE
→ INFINEON TRICORE Tool Password
→ PASSWORD BFT
→ Click on “Find Password” and follow the software messages.
If the password was found with this system, go directly to the boot step to read and write the control unit.
Otherwise, keep the previous pinout and add on the pcb two resistances 470 Ω as shown:
FYI: If ECU is not updated, read/write on bench works fine.
Here is the MED17.1 bench pinout to fox flash.
To read and write use the following driver:
→ BENCH TRICORE
→ VW / AUDI / SEAT / SKODA
→ TC1796 – VAG
→ MED17.1
