The air stopped working in my 1996 Lexus LS400 fan quit .....no power at all. small fuses are ok how do you check those big breakers or fuses

Check the oil dip stick if it is a milky white this is really bad being cracked engine head or blown head gasket.
More than likely and best out come it will be the radiator or a radiator hose.
If you can see water stain some where around the radiator it does not need to be a big amount.
Or a radiator hose that may have water around it or coming out when hot then that is your leak.
Maybe a good idea to take to a radiator place or a mechanic ask them to put a pressure test on the radiator.
Also only fill radiator when cold or if you need to do when hot make shore the car is running to avoid cracking the engine head as this will make any grown person cry $$$$
And do on a hill with engine facing up running and cap off little bubbles will come out keep filling when bubbles stop put cap on fill reservoir ( a little container next to the radiator).
Let me know if this helps.
Regards Craig

According to the THIRD wiring diagram on the
BBB INDUSTRIES FREE circuit drawings and
TECHNICAL SERVICE BULLETINS...

(registration required (these are real documents))...

You can disable the "airbag squibs" by pulling
SPECIFIC fuses out of the AIRBAG SENSOR ASSEMBLY...

I will not quote the FUSES... because TOYOTA is
quite famous for playing their TECHNICAL DATA
close to their vests... (my opinion).

However you will be happy to know the WIPER SWITCH
shows as AVAILABLE 20 years later (obviously popular)
((even on AMAZON))...

Hope this helps!!

1996 LEXUS LS400 4 0L V8 Wiper Washer Switch RockAuto

More Information for AIRTEX WELLS 1S9683

Carnac the Magnificent

you must have a wire shorting out look for a bare spot of wire near the smoke

I have a same problem. need help

there is a website that deals only in antennas I just order a new one for my 96 lexus 300. i believe the website was antennasrus.com

Either the temperature sensor on the radiator, or the relay is bad.
Pull a wire off the temperature sensor on the radiator.
If it stops the fans, then the sensor is bad and the relay ok.

check fuses , ck. power to the pump and go from there.

you need to get this vehicle scanned by an experienced technician preferably a lexus tech using lexus equipment. this will cost you a one hour diagnostic charge but it will save you money and aggravation in the long run.

Check your coolant level sounds like it might be low.

If oyu have spark, fuel and compression the engine should start.