|Rolling stock||DBAG Class 481|
|Electrification||750 V DC Third rail|
S3 originally was shortened to Ostbahnhof from 2003 to 2009 while awaiting renovation works. To compensate for the diminished throughput on the Stadtbahn, the S3 (formerly Erkner ↔ Ostbahnhof) was extended westwards to Spandau. Then, it temporarily shortened to Ostkreuz.