A/c Intermitent Cooling

[Rogerm]

1999 RX300

Today I experienced loss of cooling. ( outside temperature was 91 F.)

1. The compressor failer light did not flash on the "auto" button. So I think the compressor is ok.

2. The cooling came back on after being turned off for from 10 min. in one case to 1 hr. in the second.

and

the setting reduced temp to 65 F or "cold".

It came on and ran well for 45 min. until I parked it for the night.

I suspect it may have something to do with the "termostat" or computer.

Has anyone experienced this?

Roger

[wwest]

1999 RX300

Today I experienced loss of cooling. ( outside temperature was 91 F.)

1. The compressor failer light did not flash on the "auto" button. So I think the compressor is ok.

2. The cooling came back on after being turned off for from 10 min. in one case to 1 hr. in the second.

and

the setting reduced temp to 65 F or "cold".

It came on and ran well for 45 min. until I parked it for the night.

I suspect it may have something to do with the "termostat" or computer.

Has anyone experienced this?

Roger

If the engine coolant temperture raises above "normal" the A/C compressor will be automatically disabled.

Most commonly caused by a failed or intermittent radiator cooling fan.

[Rogerm]

1999 RX300

Today I experienced loss of cooling. ( outside temperature was 91 F.)

1. The compressor failer light did not flash on the "auto" button. So I think the compressor is ok.

2. The cooling came back on after being turned off for from 10 min. in one case to 1 hr. in the second.

and

the setting reduced temp to 65 F or "cold".

It came on and ran well for 45 min. until I parked it for the night.

I suspect it may have something to do with the "termostat" or computer.

Has anyone experienced this?

Roger

If the engine coolant temperture raises above "normal" the A/C compressor will be automatically disabled.

Most commonly caused by a failed or intermittent radiator cooling fan.

My temperature gage was about middle...and I think it is correct.

The problem occured when I started the car cold.

Then today twice, I used the car and the A/C came on.

Today... I had put it in AUTO and did not hit off and then hit the A/C button.

Monday I had been hitting the OFF button, then the A/C button and playing with the fan and temp settings.

???/

[Rogerm]

1999 RX300

Today I experienced loss of cooling. ( outside temperature was 91 F.)

1. The compressor failer light did not flash on the "auto" button. So I think the compressor is ok.

2. The cooling came back on after being turned off for from 10 min. in one case to 1 hr. in the second.

and

the setting reduced temp to 65 F or "cold".

It came on and ran well for 45 min. until I parked it for the night.

I suspect it may have something to do with the "termostat" or computer.

Has anyone experienced this?

Roger

If the engine coolant temperture raises above "normal" the A/C compressor will be automatically disabled.

Most commonly caused by a failed or intermittent radiator cooling fan.

My temperature gage was about middle...and I think it is correct.

The problem occured when I started the car cold.

Then today twice, I used the car and the A/C came on.

Today... I had put it in AUTO and did not hit off and then hit the A/C button.

Monday I had been hitting the OFF button, then the A/C button and playing with the fan and temp settings.

???/

---------------

Followup :

I had to have TWO computer boards Replaced !!!

( They tried the first, called me, then when I went to pick up the car they said they tested it

and their was still a problem and had to do the second.

o The instrument panel one which included A/C controls

o The primary computer for the Lexus RX300.

Hopes this helps someone.