Foxflash Cannot Connect with VL300 Gearbox on Bench Solution

By | May 7, 2025

Problem:

Have a problem connecting in bench mode with the Audi A4 TEMIC VL300 CVT transmission control unit.
Foxflash software cannot identify or read the unit.
Attaching screenshots.

Foxflash Vl300 Tcu Bench 1 Foxflash Vl300 Tcu Bench 2 Foxflash Vl300 Tcu Bench 3

Solution:

Foxflash will read and write Temic VL300 gearbox TCU in boot mode. 

Foxflash Vl300 Tcu Bench 4

Don’t do it on bench mode. Don’t use Godiag GT107 gearbox adapter.

Follow foxflash instructions to read VL300 TCU in boot.

 

Instruction:

Drill a hole in the cover underneath:

DO NOT EXCEED 5 mm IN DEPTH.

Foxflash Vl300 Tcu Jtag Pinout 1

To connect to the control unit use:

– Multifunction cable

– Round Pin connectors

– Needle

Foxflash Vl300 Tcu Jtag Pinout 2

Foxflash Vl300 Tcu Jtag Pinout 3

IMPORTANT:

SEAL THE HOLE WITH TWO-COMPONENT GLUE AFTER COMPLETION OF THE WORK.

 

Read also:

http://www.pcmtuner.org/foxflash-read-and-write-audi-vl300-gearbox-success/

 

www.iecutool.eu