Toyota Corolla Instruction Manual page 315

 EON (Enhanced Other Network) system (for traffic announcement func-
tion)
If the RDS station (with EON data) you are listening to is not broadcasting a
traffic information program and the audio system is in the TA (traffic
announcement) mode, the radio will be switched automatically to a station
broadcasting a traffic information program in the EON AF list when traffic
information begins.
 When the battery is disconnected
Stations presets are erased.
 Reception sensitivity
 Maintaining perfect radio reception at all times is difficult due to the continu-
ally changing position of the antenna, differences in signal strength and sur-
rounding objects, such as trains, transmitters, etc.
 The radio antenna is mounted inside the rear window. To maintain clear
radio reception, do not attach metallic window tinting or other metallic
objects to the antenna wire mounted inside the rear window.
Corolla_TMMT_EE (OM12F04E)
5-2. Using the audio system
315
5