Sony Ericsson HCA-20 Manual De Instrucciones página 5

Battery-saving function
The car handsfree has an ignition sense function in
order to save the car battery.
If the ignition sense cable is connected, the car
handsfree and the phone are turned off an hour after
the ignition was turned off. However, if a call is in
progress, the car handsfree and the phone are not
turned off until the call is ended. When the ignition
is turned on again, the car handsfree and the phone
are turned on automatically.
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Troubleshooting
This section lists some of the problems that you
might encounter while using your car handsfree.
The indicator light flashes green
• Ensure that the phone is properly placed in the car
holder.
• Check the fuse. The fuse kit is fitted to the battery
cable, near the car battery.