MX-5 mk1 NA 1.8 chirping

[Skyscooter1]

My 1996 Mazda MX-5 NA 1.8 produces a chirping noise from the radio speakers when I turn off the engine.

Can anybody give me any advice I'm assuming it's a notification of something needing attention I'm suspecting the immobilized maybe a battery somewhere needs changed?

Thanks guys
Robbie

[Oldwolf]

Bit more info might help but Sony say....

If you turn the ignition switch to the OFF position without detaching the front panel, the caution alarm will sound for a few seconds. The alarm will only sound if the built-in amplifier is used. Caution alarm will sound even if beep option is set to OFF under SETUP menu. This is normal operation. Information about Caution alarm and detaching front panel is mentioned on page#7 of the instructions manual:

HTH!