The stations on the southern section between Graben-Neudorf and Karlsruhe have been upgraded starting in 2011 and 2014 respectively. In the northern part of the line, the Neulußheim and Hockenheim stations already had the required platform lengths and heights, so only lifts had to be retrofitted. Work in Hockenheim and Schwetzingen was completed in March and July 2018 respectively. In Wiesental, Waghäusel and Oftersheim, the platforms have been rebuilt and only minor work is left. However, the completion of the lift and the staircase roofing in Neulußheim has been delayed until December 2019. Due to the special location and construction of the station, large-scale work could only be carried out with a blockade of the whole station.