1990 Lexus LS 400 - Page 10 - Answered Questions & Fixed issues

the fuses should be drivers side and under the steering wheel.........somewhere i round that area.......

or....sometimes they are located under the hood....by the battery........

If this light is flashing, there is a problem somewhere in your air suspension system. You can check to make sure its powered on in the trunk on the driver side. Behind the carpeting. This is a common issue with that particular year and model. The system tends to go bad righ around the 15 year old mark or so. Also if the light is flashing, the system is not working. Your just riding on the regular suspension.


Hope it helps

U NEED TO FILL THE COOLING SYSTEM AND SEE IF THAT HELPS.THE ENGINE HAS A COOLANT TEMP SENSOR THAT THE PCM USES(AMONG OTHER THINGS)TO DETERMINE HOW MUCH FUEL THE ENGINE NEEDS.IF THAT DOES NOT HELP RECHECK THE TIMING MARKS

It has to be either a fuse or the blower motor resistor.

can you take a picture of the part and email it to me? [email protected]

the blower resistor is burn,its located under the glove box in the blower case

your abs system is malfunctioning. i would suggest that you take the car to a dealership asap

I can't tell you exactly how to do it on a lexus but generally bulbs are changed from the rear of the assembly inside the engine compartment. you may have to remove the battery if it is on that side. do not touch the bulb with your fingers as that will shorten it's lifespan.

simple answer, have the dealer unlock it for you and disable the security feature

in 1990 LS400, the amp is only for the sub, its located between the fuel tank and trunk liner. you can reach it by removing the trunk liner which cover the fuel tank right behind the rear seat. hope this helps

Here is the

edmunds maintenance schedule

for 150,000 miles. I would do that if you have not already done so.

Also check the top of that web page for recalls, early warning reports and technical service bulletins.

It sounds like a bad brake switch. The brake switch is located at the top of the brake pedal it controls the brake lights and it controls the safety switch that makes you put your foot on the brake before it will allow you to remove it from park.

I have just replaced the timing belt only to find that the spark has dissapeared since before I began

do the brake lights work? if not, suspect brake switch or the fuse as this switch also controls a solenoid that releases when foot brake applied.

all electrical ... sorry

After you connect the good battery to the bad one (the car makes alarm sound), just start the car and the alarm will go off.

trans problem

It sounds like your battery is dead. Try recharging your battery:)

Hello;
You probably have a spark plug wire at fault. If it does nt fire, the fuel dumps into the exhaust and then burns, hence the glowing pipe. Definetly needs to be fixed right away. You may also have an injector stuck.
Hope this helps,
Rich
RPM Northwest

you need to bleed them.