With the current drought conditions we are experiencing, I did not wash my Jazz for a couple of months. Last week, the ACC warning & the CMBS warning symbols both appeared on the display. This was caused by dirt on the cameras/radar/sensors. However, simply washing the car did not resolve this. I had to purchase an OBD11 scanner to clear the fault codes to remove the warnings from the display. Lessen learned. Water shortage or not, keep your Jazz clean!