While you wait for answers, we may have found some information which could help you.
Click here for Sat Nav ProblemDisc reading error all the time?
Honda CRV 56reg. Sat-nav joystick problem?
repair honda crv satnav?
Honda CRV sat nav screen?
Can anyone fix my sat nav in my 2009 Honda CRV?
How to Fix the 2007 Honda CRV Nav?