1995 Sc300 A/c Problem

[hbzhang66]

1995 sc300. When I turn the air to Max Cold, it blows cold air; when I set it a bit higher, even 68 degree, it starts to blow hot air.

1) What can be the problem?

2) The air conditioning display always has the black shadow, is there anyway to replace the display?

thanks in advance,

[jzz30]

i think there is a temperature control thing that goes out of control. i forget what its called but its just the thing that the knob it connected to.

[Tomj8]

1995 sc300. When I turn the air to Max Cold, it blows cold air; when I set it a bit higher, even 68 degree, it starts to blow hot air.

1) What can be the problem?

2) The air conditioning display always has the black shadow, is there anyway to replace the display?

thanks in advance,

It sounds as though there is a high probability the Climate Control Module is going out...the black shadow on the display is your key visual clue. You DO NOT want to buy a new one --- about $1100.00 when I checked last year.

The Climate Control Module can be professionally refurbished. Contact Sammy Wu at Mikado Technology, 8840 Forest Street, Gilroy, CA 95020, (650)615-9966. You can email Sammy at sammywu@sbcglobal.net. Remove the unit and ship it to them. I had mine back in just over a week. They do this refurbishment routinely for Lexus dealers across the U.S., and they charge around $200. Good people, good work - a Lexus dealership put me onto them.

[txn_2001]

Did you check inside car temperature sensor. It located right next to the igintion key. It look like about 1 square inch grill window. That sensor most likely gives you the problem of because sending wrong message to the computer. It might be either disconected or went out. Test that sensor resistant from 1600-1800 Ohm at 77 F degree. and 500-700 ohm at 122 F degree. If your sensor is not met that, replaced sensor. it not need to be exacted the same but at least its resistance must change acording to changing of temperature.