Model: Toyota Camry CE Year: 1998 Place: Ontario, Canada.
Problem Description: The preset tuning of the radio and clock set for the built-in radio- cassette lost after few hours.
Problem reproduction scenario:
1) I tune the radio channels for preset buttons (there are 6 preset buttons),
2) I set the clock to current time,
3) Keep the radio and clock switch turned
4) The radio and clock turned on everytime I start the car and could switch channels by using the preset button,
5) But after parking for 6/7 hours, the radio and clock doesn't turned on and all preset condition got lost,
6) If the weather is warmer, then the duration of preset condition stays a bit longer, but eventually got lost.
Questions:
1) Is there any separate battery (power supply) for the radio- cassette ?
2) How to keep the channel preset and clock time be saved ?
Note:
1) Even though the battery is 2-years old, I don't have any problem about starting the car even at -20C.
Thanks in advance for any idea or solution.