Mercedes S Class W220 owners have many problems with this car instrument cluster. Problems include no lighting, partial
lighting and / or flickering or intermittent lighting. Mainly to repair this dashboard you need replace defective lighting transformer to new one.
Transformer with BOSCH number 8 903 428 016 is used in Mercedes S Class W220 cars year 1998-2000 (dashboards with 93C66 EEPROM inside). Check your car dashboard transformer number before ordering.


Also BUZ102S transistors can by defective - exchange it before transformer.