How to Read and Write DQ250 MQB with Kess V2

Confirmed! Genuine KESS V2 is able to read and write the Control Unit of VAG DSG DQ250 and DSG DQ250 MQB transmissions. but a new 144300K267 dsg cable and the genuine programmer are required!


new 144300K267 dsg cable to flash mqb dsg:


uses the same cable as the old DSG DQ250


Difference between old and new dq250 is that you add a 12v 5 amp switch to the positive main power cable, when it prompts you to cycle ignition, leave the main DSG switch on, and cycle the switch that you just installed when prompted.

Schematic of the cable I have used for DQ250.


Also a photo of the cable set I have made with changeable adapters for DQ200, 250 and 500. The clips for battery connection, box with  ignition switch and the connector to KESS box is re used for all adapters.


With the drivers included in ECM Titanium, you’ll be able to modify the operating parameters of the gearbox Temic DSG MQB in order to increase performances.


*   Upshifting maps: they manage the shift to the upper gear in all the driving modes available on the vehicle (ECO, Normal, Sport, Winter). They indicate in RPM when the gear shift occurs.
*   Downshifting maps: they manage the shift to the lower gear in all the driving modes available on the vehicle (ECO, Normal, Sport, Winter). They indicate in RPM when the gear shift occurs.
*   Launch control:the launch control is an electronical system to avoid the slipping of the drive wheels when accelerating rapidly from a standing start. Thanks to the maps of launch control it’s possible to increase the RPM maximum limiter.
*   Maximum torque limiters:in addition to the limiters of the ECU, it’s possible to modify the transmission torque limiters to increase the performance of the vehicle.
*   RPM limiters:you’ll be able to modify the RPM limiters of the transmission too, to achieve better performance.
*   Timing maps:they’re expressed in ms (milliseconds) and enable the shifting timing modification.
*   Maximum oil pressure:it’s possible to increase the shifting speed, by increasing the oil pressure of the transmission.

——————————————–YOU HAVE TO KNOW ——————————————

It’s VERY VERY VERY IMPORTANT: you should have the Auto ECU Programmer Kess V2, not china or eu clone. with the clone you have no luck with VAG DSG DQ250 and DSG DQ250 MQB.

Also, KTMflash is a good investment for DQ250 MQB

Cheap China clone KTMfash also works good for DQ250 MQB!

DQ250 is listed in the KTMflash vag car/ecu list. look here:

V-A-G: DQ200 (0AM)
V-A-G: DQ200MQB/G2 (0CW)
V-A-G: DQ250C (02E) K-Line
V-A-G: DQ250E/F (02E)
V-A-G: DQ250MQB (0D9)
V-A-G: VL300/V30 (01J/0AN) K-Line
V-A-G: VL300/V30 (01J/0AN)
V-A-G: VL381 (0AW)
V-A-G: DQ500 (0BH/0BT)
V-A-G: DL501/G2 (0B5)
V-A-G: DQ200/MQB Boot (MICRO)
V-A-G: DQ200/MQB Boot (EEPROM)
V-A-G: DQ200G2 Boot (MICRO)
V-A-G: DQ200G2 Boot (EEPROM)
V-A-G: DQ250E/F/MQB Boot (MICRO)
V-A-G: VL300/V30 BSL (FLASH)
V-A-G: VL381 Boot (MICRO)
V-A-G: VL381 Boot (EEPROM)
V-A-G: DL501 Boot (MICRO)
VAG: DL501 Boot (EEPROM)
V-A-G: DL501G2 Boot (MICRO)
V-A-G: DL501G2 Boot (EEPROM)

Read-and-Write-DQ250-MQB-with-Kess-V2-6 Read-and-Write-DQ250-MQB-with-Kess-V2-8 Read-and-Write-DQ250-MQB-with-Kess-V2-9 Read-and-Write-DQ250-MQB-with-Kess-V2-10 Read-and-Write-DQ250-MQB-with-Kess-V2-11

Read-and-Write-DQ250-MQB-with-Kess-V2-12 Read-and-Write-DQ250-MQB-with-Kess-V2-13 Read-and-Write-DQ250-MQB-with-Kess-V2-14 Read-and-Write-DQ250-MQB-with-Kess-V2-15 Read-and-Write-DQ250-MQB-with-Kess-V2-16

DQ250E/F/MQB Boot (MICRO): success!
DQ250E/F/MQB Boot (EEPROM): success!

Ktag Kess V2 NO 12V (customer solution)

Hi all and thanks all for your responses. Here, i collect working solutions of Ktag or KESS V2 NO 12V. Hope it helps someone out.

Part 1: Cannot get 12v of output from Kess V2
I use a AC power to connect to my kess V2 adapter. The seller gave it. it it 12v and 1A.

When I use my kess I’m following the next steps.

1 ) Connect the adapter to kess unit
2 ) Connect the ac power adapter to the adapter
3 ) Connect the usb cable to kess unit and the computer and tun the software

My kess read ecus by OBD port. I read a seat leon 1.9 BXE perfectly. It is other edc16 ecu.

The Ksuite shows it has 12,16V-12,30V all time while it is trying to read.

I tested my power supply and it give 12 volts



Part 2: Ktag NO 12V

Got a K TAG Clone since a few months. did about 10 ecus with it, no problem! Since today i’ve got no 12 volt on red wires. Normally when i click read 12v appears on red and orange wires. Now only on orange. When i connect red and orange together everything works like normal.

Here is the board with faulty component(s)


Changed this component and it worked.

25-3 25-4

Part 3: Ktag Kess V2 working good with 12V

Ktag Kess V2 with best components works good

Note that Red PCB version works better than Blue & Green versions

Ktag 7.020 maximum quality:

Kess v2 5.017 of maximum quality:

Newest ktag kess v2 red pcb: