Has anyone had an intermittent ABS + DSC idiot lights?

I have a 2000 323i with 100K miles. The ABS + DSC idiot lights go on and off every few days. Dealer replaced the ABS computer for $1200 + labor and the problem has not gone away.

On second attempt dealer said a "wheel sensor" was bad. Cleaned/replaced a sensor. Did not fix the problem.

All suggestions appreciated - thanks.

Go to the same dealer and show him. It should be done free of cost now.