The lines (or just the nozzles themselves) could be restricted from dis-use.
Anyone with a compressor could troubleshoot the exact issue. Perhaps the dealership felt it would be less labor time just to replace all the lines?
++++++
As far as maintenance, replace any fluids that you don't have service records of ( Honda-brand ATF, brake fluid) and check all the filters (engine and cabin). Give all the rubber bushings/CV joint boots underneath a squirt of silicone to keep them supple.
That provides a baseline...
Anyone with a compressor could troubleshoot the exact issue. Perhaps the dealership felt it would be less labor time just to replace all the lines?
++++++
As far as maintenance, replace any fluids that you don't have service records of ( Honda-brand ATF, brake fluid) and check all the filters (engine and cabin). Give all the rubber bushings/CV joint boots underneath a squirt of silicone to keep them supple.
That provides a baseline...
