Gas and temperature gauges don't work on a 2005 Lexus sc 430

SOURCE: cd error

I hate to be the bearer of bad news... that error code means that you have a CD that's bad in the 6 disc changer.... If you're handy... you can take your radio out and manually remove the cd's and make sure that the 6 trays are aligned properly and not stuck together. (known issue) However, Lexus/Toyota does NOT repair ANY of their electrical components. They want you to pay for a NEW one at the tune of 800.00 PLUS installation... and they send the old one back to Japan and remove the CD's and mail them to you. (at no extra cost... as the service rep was telling me.. as to benefit feature me on the sale of the replacement unit.) Next be ready for the "Disc Read Error, Check Disc" on your navigation... lol.. it's a 2.10 motor that moves the lens that reads the DVD navigation CD.. and once again .. they don't replace or repair... that's a 4500.00 item plus installation.. GOTTA LOVE YOUR EXPENSIVE CAR NO? ;)

SOURCE: super-unleaded or premium gas for 2006 lexus ls 430

Well, of course premium is HIGHLY recommended, but it is not necessary.
You can use regular grade in your engine and it will not harm it at all. Modern engine management systems have knock sensors that detect lower grade fuel and make the necessary adjustments to your timing and fuel delivery systems.
All you will notice is slightly slower acceleration and a slight drop in engine horsepower.

Hope this helps...

SOURCE: Lexus LS 430 navagation DVD installation guide

its in the trunk, remove the panel that says navigation, hit the eject button and replace the disk. make sure the car is on while you do this. it will automatically load the new disk

SOURCE: what grade gas should be used ?

You should always use premium fuel on the high conmpression V8 engine. Cheaper fuel can cause a PING, and possible engine damage. 87 octane is definitely not recommended at any time, but sometimes you can get by with 89 for a small period of time.

Gas mileage and power will both be down with lower octane fuel, so do not use it all the time.

SOURCE: Lexus ES300 outside temperature gauge not working

I also have the same problem, I would also be happy with a diagram of the location of the sensor.