Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hello,All of the lights are controlled by the front SAM module. It is located behind the glovebox on the firewall. Possibly it got damaged by the flooding. It is worth a try to remove and disassemble it to re-sloder all of the connections.
if this does not help, i recommend to check it's condition with Star Diagnosis computer and replace the SAM if it is confirmed to be faulty
Here are the instructions for removal of the SAM