Whistling noise when key put in ignition

[baldylocks]

Hi, Hoping I might get an solution to this problem, my Tino has had the red key light stay on a few times over the last couple of days, I have just changed the battery in the fob on advice from a friend, now whenever the key is put in the ignition I get a high pitch whistling noise, stays on even when the engine is running.

Thanks in advance for your answers.

Gerry