99 passat ABS lights is on all the time,recently

The ABS Modiule is bad you can replace yourself very easily go to modulemaster.com and enter your vehicle information and they will show you how with photos and vido and they will repair module for about $160 plus shipping. THisi sa manufactrers defect. Modulemaster will rebuild and fix the problem and a five year warranty. A new one will cost $1500 and still has the defect but only a one year warranty form dealer/manufacturer.

i had the same problem i replaced the transmission fluid and had at cleaned