93 Es300 Atc Must Manually Turn On

[Ipuck]

I HAVE TO MANUALLY TURN ON THE HEATER SYSTEM EACH TIME I START THE VEHICLE

IT WILL FUNCTION PROPERLY WHEN MANUALLY TURNED ON WHEN I TURN OFF THE

VEHICLE AND RESTART I HAVE TO MANUALLY TURN IT ON AGAIN.

THE CLOCK ALSO EACH TIME I TURN THE KEY OFF RESETS TO 1:00

I HAVE CHECKED EVERY FUSE I CAN FIND WITH A SIMPLE TEST LIGHT AND CANNOT

LOCATE A FUSE PROBLEM.

ANY ADVICE WOULD HELP

[Toysrme]

1) Don't type in all caps. Caps = shouting. Shouting = annoying & harder to read

2) That's how all heater/fans should be operated

3) Load test the battery, test the current draw with the car off, test the wiring

[SKperformance]

how long have you owned the car

[branshew]

You could have a loose wire somewhere. Sounds like the clock is not getting voltage when the car isn't running. Maybe the same thing is happening to the climate control.

On your radio you have 2 Hot wires. One that is hot all the time to hold your presets, CD track playback info, clock, etc. Then there is one that is only hot when the car is on where it draws the juice to run on. (I realize that your clock isn't on the radio - just using that as an example of the dual hot wire principal)

Do you have the original head unit or an aftermarket stereo? Maybe someone hosed up the wiring in the dash area installing an aftermarket.