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Old 05-06-04, 05:57 PM   #1
RA40
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Question Outside temp sensor location?

Where is the sensor that reads the outside temperature?

While driving around today, it read a constant '95 degrees. Usually if it has been sitting, it reads high but after a bit of driving, it seems reasonably accurate...today it was way off.
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Old 05-06-04, 07:01 PM   #2
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behind rippled lower front end; toward rt side. remove lower flap to see.
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Old 05-06-04, 10:21 PM   #3
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Found it...thanks Richard.
The last couple days it has reacted very slowly. Lexus wants $33.XX and it is a special order part.
Is there a test procedure to check for accuracy?
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Old 05-07-04, 08:24 AM   #4
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doubt it--if the service manuals had a decent index I would try to look it up--but they don't.
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Old 05-07-04, 08:43 AM   #5
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Check ambient temperatuer sensor?

Remove from radiator grill
Disconnect sensor

Check resistance between terminals 1 and 2

Resistance

at 77 degrees 1.6 - 1.8 Ohms
at 122 degrees 0.5 - 0.7 Ohms

As the temperature increases the resistance decreases
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Old 05-07-04, 09:42 AM   #6
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Thanks MTS-lexus

I went looking through the service manual and came up for that particular sensor.
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350, 430, 460, ambient, lexus, location, ls, ls400, outside, reads, rx, sc, sensor, temp, temperature

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