I have a question, and I'm not sure if it has ever been asked.

I have the standard (non H/K) "boost" radio. Above the RDS and PTY display area on the right there are 4 little symbols that have never lit up, to the best of my knowledge. You can see the silhouettes of them when the radio is on. From memory, I think one is a triangle, one is a telephone handset, one looks like a circle with a squiggly line through it (like the Mazda symbol) and one is a circle with a straight line through it (like a zero).

Anybody know what these are for/mean? I was thinking that they are probably used in other countries since the car is sold with this radio all over the world.

 

The telephone handset probably turns on when you receive a call on a handsfree kit that has been installed with radio mute to the headunit. One down......

 

I think one is a traffic information indicator (used in Europe), the one that looks like a yield sign.