How do i locate the air filter vacuum tube that

SOURCE: replaced battery, a few days later engine light

please remove the negative battery terminal wait for 15seconds then return! start the engine! you can get me on+2540722528209

SOURCE: HEATER NOT WORKING IN 2001 LEXUS RX 300

you most likely have a bad airmix servo. this happens alot on these. they are expensive to replace too.

SOURCE: how to get the vsc off my 2000 gs 300 lexus

there is a switch under the dash to turn the vsc on and off. its on the driver side

SOURCE: 2000 Lexus RX 300 - VSC Light comes on and brake pulsation

you most likely have an "air gap" or "tone ring" problem with one of your sensors or tone rings. i would suggest letting a technician diagnos which problem it is, as it is a diagnosis that requires some experience.

SOURCE: just got car service for 75,000 miles also had new

Sounds to me like someone has perhaps knocked the ABS sensor while working on the brakes. The ECU in these cars interlinks various stability and braking components. Go back to the service center and ask them to put a code reader on the car and get a read out. It may only require that they reset the fault codes, but do not delay. On some Lexus vehicles these lights will also come on when the battery has been disconnected and there will be a reset for the programs, but the TRAC off light has never come on on my 2001 when doing brakes or battery swap.
nice find an 02 with 75,000. My 2001 is over 160