Okay my fellow Lexus lovers! I have a 2002 UL LS430 and I am stumped by a few things.

1. My air conditioning doesn’t work when the climate control is set at anything other than Max-Cold and when I click up to 65 degrees the heater will burn you out! Do you think the pressure switch needs replaced? Any other ideas?

2. My compressor for the suspension has a motor and it is super loud, do these need replaced? And when replaced are they quiet? I read on the club Lexus forum a guy replaces the bushings with success?

3. I called Lexus to get another key fob, does anyone have one they would sell with a key fob? Lexus wanted $280 which they say is wholesale 😊

Thanks and looking forward to everyone’s wisdom!

PFA

 

there's no text on your post btw. my question though is how did you keep that LS in such good condition, especially the wheels, while you're in alaska??

 

If AC only works on Max Cool or Max Warm, check:
1) Air mix damper control servomotor circuit
2) Room temp sensor circuit
3) Driver-side cool air bypass damper control servomotor circuit
4) Passenger-side cool air bypass damper control servomotor circuit
5) Evaporator temp sensor circuit
6) Driver-side solar sensor circuit
7) Passenger side solar sensor circuit

You should also check the AC system for DTCs: while pressing the Auto switch and recirc switch simultaneously, turn IG to ON. Codes will be displayed where the temperature setting is normally displayed. You can rotate through the codes by pressing the driver-side temperature-up switch. If a buzzer sounds as a code is being outputted, it means it's an active code. If there is no sound, then it is a historical code. There are 2 ways to clear all AC codes: (1) press both rear defrost and front defrost switches during the sensor check or (2) pull the A/C fuse in the driver-side J/B (should be 3rd column, 2nd last row) for 30 seconds.

2) No sense replacing the air suspension compressor early. I advise keeping an eye on prices and where to buy them and learning the replacement procedure, then if it does fail, go ahead and buy a new one. No sense buying a new one now if it will still work for another 5-10 years.

3) Several locksmiths have the equipment to cut a new key, all they need is a picture of your old key. However, the new key must have a transponder. There is a procedure to program new transponders into the ECU that you should be able to do on your own without special equipment, search these forums. Procedures vary slightly by year and maybe country, but I'm pretty sure all procedures have been discussed here prior.

 

I had great success just changing the air suspension compressor bushings. It went from annoyingly loud to 100% inaudible, and I am very sensitive to noise. I would definitely try this first. BTW I did this job about 100k miles ago, and I am at 212k now and the compressor is still working just fine (totally silent), they seem to have a very long life.