Question about 1992 Lexus Sc 400

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Ac stopped working

I was driving my 1992 lexus today and my ac was working great until my wife dropped a penny down into the lighter and my ac shut off imediatly, everything else on the car works great just now no ac, I checked my fuses and all look ok so now i have no clue what to look for?

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Check your compressor

Posted on Jun 01, 2009

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Penny dropped into the cigarette lighter of my 2008 saturn astra. I got the penny out, but the cigarette lighter doesn't work


there must have been a weak connection somewhere in the line.
use a volt meter to trace from the lighter to the fuse box.
I have also seen the wire connection go bad during a short in the back of the fuse box itself where the wire goes in.
follow the 12 volts and you will find your problem.


Sep 26, 2012 | 2008 Saturn Astra XE

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1995 lexus sc400 heater works while driving. cool air when stopped. help

Heater cold when at idle: Try stopping on a steep incline--does the heater stay warm? If yes, what you have is an air bubble that hangs at the heater hose until pressure from the water pump blows thru it as the engine speeds up. Park on an incline, open the radiator cap, run the engine until the thermostat is open, and fill the radiator to the neck. Wait until the level stops dropping and make sure bubbles don't continue to come up. If they do, you may have a blown head gasket that will keep forming these bubbles until you change the gasket. Please let me know if you have questions.

Dec 22, 2010 | 1992 Lexus Sc 400

1 Answer

My radio, ac, heat, cigarette lighter, clock went out. Does anyone know which fuse I need to change? I don't have a manual book to tell me which exact fuse I need to replace.

Sounds like the most obvious place to check is the cigarette lighter and its fuse, many times folks stuff a penny in the lighter port without realizing it and cause the fuse to constantly blow.
Now finding the fuse panel is fun....not really....buty it is there don't give up!!
under the dash where you rest your left foot on a drive...the fuise panel is to the left side kick panel half buried by the carpeting, it is has a black flat cover marked fuse, open it and the whole fuse arrangements are clearly and consisely marked for replacement.
Happy Motoring!!

Jun 23, 2010 | 1995 Lexus GS 300

1 Answer

Lexus sc400 electrical problem

the computer is bad and also these cars are known for the insturment clusters to go bad along with the computer. get them both fixed and it will solve your problem.

Aug 10, 2009 | 1992 Lexus Sc 400

1 Answer

Ac module stop working

Sounds like a low freon issue, or a bad sensor which senses its pressure.

Jul 20, 2009 | 1992 Lexus Sc 300

1 Answer

No power to heat and ac module

The most common problem is a coin or other metallic object falling into the cig lighter and shorting things out. Be certain you do not still have a penny in the bottom of the cig lighter socket. On mine, I just kept blowing fuses until I found it.

Jul 05, 2009 | 1992 Lexus Sc 300

1 Answer

1992 Lexus SC400 No Heat, AC, Defrost (mode controls)

Change the 15amp fuse in the kicker fuse panel labeled cig. My stopped working for the same reason.

Feb 20, 2009 | 1992 Lexus Sc 400

1 Answer

Runs for awhile and then losses power!!

Man! Lexus is ****! I have the same problem.

Aug 14, 2008 | 1992 Lexus Ls 400

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