CRJ-700 flight crew reported steering; rudder and 'Prox System Chan' caution messages on descent. Crew diverted and performed a normal landing.

Narrative

On the ground in ZZZ1; maintenance was called for a CAS MISCOMP status message just prior to pushback. The system was reset using CBs and signed off. There were no further issues until just prior to beginning the descent into ZZZ; when a STEERING INOP and PROX SYS CHAN caution message and several status messages including STEERING DEGRADED and RUD LIMIT FAULT appeared on the EICAS screens.After calling for the QRC; the captain took the aircraft; and I completed the QRH for both caution messages. A decision was made to divert to ZZZ2 for a longer runway and less operational disruption. We requested priority handling with ATC and advised of our intentions to divert to ZZZ2; briefed the flight attendants; and dispatch.Prior to landing; the caution messages and status messages turned off; however since they had flashed on and off a few times prior; we decided to continue as if the messages were still there; as we were unsure whether the underlying issue would re-occur or still existed.The captain took over controls for the landing. After landing; the captain was able to turn off the runway on a high-speed taxiway. ARFF (Airport Rescue and Firefighting) vehicles were standing by and wanted to inspect the aircraft. After this brief pause on the taxiway; we were able to taxi to the gate and deplane normally. The captain communicated with maintenance and dispatch following the arrival of the aircraft at the gate.The aircraft was then towed to a hard stand awaiting maintenance.All SOPs followed; communication and CRM completed between all available resources including dispatch; cabin crew; ATC; and airport operations. ATC was greatly beneficial in coordinating assistance on the ground; and ZZZ2 station personnel were of great assistance in minimizing the impact to passengers and the normal ZZZ2 operations.