See also:

Tire chains
Tire chains cannot be used on your Impreza, WRX and STI because of the lack of clearance between the tires and vehicle body. ...

For U.S.A
The following information has been compiled according to Code of Federal Regulations “Title 49, Part 575”. ...

Selecting audible signal operation
Using an electronic chirp, the system will give you an audible signal when the doors lock and unlock. If desired, you may turn the audible signal off. Do the following to deactivate the audible signa ...