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1999 Lexus RX300 Questions

Get answers to questions about your 1999 Lexus RX300 at RepairPal. Find solutions, diagnose problems and get back on the road.

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143
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Was told the engine computer needed replacement.

The lower (foot-level) AC/heat vents and most of the defrost vents have completely stopped working. I still get plenty of air from the main vents, but it only blows from there, regardless of the fan settings.

When I lock or unlock the car non-manually, some doors respond and others do not. The driver's side door is particularly inconsistent.

how can I gain access to tail lights, not the tail gait ones

the air conditioning is running fine but even after replaceing blend door motor still no heat operating ?

every morning when I start my 1999 lexus rx300 car, alot of blue smoke comes out of the exhaust. I just bought this car about 2 months ago with 55,000 miles now I have 56,000 miles on it.
The interior of the car is in excellent shape. According to the previous owner, his grandfather drove the car.

I only have 84k miles on it. I have had it for 10 yrs now and have had all service checks, oil changed. I don't know if I should put this money into it or not? My mechanic said around 4k in repairs and he couldn't do the heat and a/c and bring to dealer. If I put this in, is the tranny going to go?

The shifter is not locking into place. If you have your hand on the shifter while driving or driveway with your foot on the brake the shifter will slip easily into neutral but not reverse. What is this? hoping it is not related to transmision.

How much should it cost to have 2 catalytic converters and an oxygen sensor replaced?

My car will start only if my foot is on the gas pedal to keep the RPMs up. Once my foot is taken off the gas pedal, the RPMs will go all the way down and the vehichle shuts off. What can I do to possibly fix it....I am not mechanically savvy, but can try before I spend alot $$$ on repairs.

My A/C is working, in the sense that it is blowing cold air. Yesterday while the car was running, it just randomly auto-changed (best way to describe it) and no longer responds to my changing of the knobs/desired output of A/C.
After some simple googling it seems it 'could' be the resistor? Or is it a problem with the digital display? Thank you.

When I use my remote to lock doors, driver's side does not lock. I have to lock manually with key. Is this due to faulty actuator? If so, is it easy to repair? What is cost for material and labor?

My car has 204K plus miles. I changed timing belt around 103K. Miles on car primarily highway. Do I need to change timing belt ONLY or should I buy a timing belt kit (belts, water pump, etc.)? Lastly, approx what will be labor charge?

My wife was driving her car last night when all of a sudden it died on her and there was a burning smell under the hood. When I got there, she had absolutely no power to anything in the vehicle. I took the battery out and gave it a full charge. I put it back in the car and tried to start it, nothing. Not even dashboard lights, radio, etc. I put a multimeter across the terminal and it read zero. I disconnected the positive battery cable and the mult meter read 8-10. I had a light meter? that I clipped to the positive cable and then connected to the positive stem on the battery and the light lit up. Does this mean a fuse is blown? If so, where would that fuse be? Are there other tests I can do? Is the alternator bad? Please help.

Should I replace the transmission on a 1999 Lexus RX 300 with 180k miles? I was quoted 3500.00 with a 30k mile warranty.