careucar的部落格

Offer working solution to Ktag 7.020 error " any car protocols its gray buttons", can't select or choose any cars . ktag v7.020 does communicate between laptop and ktag device and can select cars/trucks/....etc

It does have power.

Possible reason and solution:

1. connect 12v adapter.

2. The problem is in the SD CARD that is in the interface. I had the same problem and solved it. Programming the sd card for KTAG and KESS is a very difficult process that cannot be done by everyone. There are two options 1. that somebody who knows, do - can program a new sd card or other option to buy SD CARD.

3. or the problem is with nxp.

Here is NXP chip sold in China.

Last but not least, ensure you have one good quality of Ktag clone. i.e SE135-B1 (73.39euro, red pcb), SE135-E (63.22euro, red pcb).

Source:http://blog.obdiitool.co.uk/ktag-v7-020-car-protocols-gray-buttons-solution/