It's a malfunction on jhoak123's car. In overseas markets, the Mazda3 can be had with automatic climate control, so that display is used to either show the desired temp setting or the outside ambient temperature.jhoak123 said:anyone know what the AMB with three dashes under it means? it's located on the far right side of the stereo display. it's only there when the ignition is turned on but not when it's turned to acc.