I have a 2004 Lexus SC430 that has buttons to

Question edited for clarity.
Question moved to model category.

This Club Lexus thread may help you.

O2 sensor heater control circuit fuse? - Lexus Forum Discussion

https://www.clublexus.com > forums > 951271-o2-sens...
Aug 27, 2020 - I looked up in the manual and I didn't see a fuse dedicated to O2 sensors heaters. One of the possibilities is the resistor in the sensor ...
FUSE help o2 sensors? - ClubLexus - Lexus Forum Discussion
Dec 2, 2007
New oxygen sensor reading 0 voltages - ClubLexus
Aug 17, 2015
O2 Sensor problem FINALLY SOLVED!!!!!!!!! - ClubLexus
Nov 28, 2002
EFI fuse 2 keep blowing - ClubLexus - Lexus Forum Discussion
Jul 29, 2020
More results from www.clublexus.com

https://www.google.com/search?q=2004+lexus+sc430+heated+oxygen+sensor+fuse

..

There's this website www.reliable-store.com
They have books on ALL vehicles.
it covers wiring diagrams, electrical diagrams,
fuse diagram, torque specs, PCV, error codes, fault codes, service info, repair info, parts info, owner's/service/repair/parts/maintenance manuals etc everything totally..
I have 1987 toyota 4runner model and I keep servicing and when needed repair it on my own. worth it !!!

Principles of Operation
The driver seat module (DSM) is on the controller area network (CAN) communication network. To support several vehicle subsystems, the module permits intermodule and diagnostic tool communications.
The DSM controls the memory driver seat and the passenger memory power exterior mirror. This passenger memory power exterior mirror feature allows the driver to program personalized mirror positions. Once the driver stores a mirror position, the driver can recall the setting by pressing the corresponding memory switch or by using a programmed remote keyless entry (RKE) transmitter. For additional information, refer to Section 501-10 .

How to Diagnose Controller Area Network CAN

Driver Seat Module - Memory Seat
The power driver seat, power outside rear view mirrors and power adjustable pedals are controlled by the driver seat module (DSM) only when the vehicle is equipped with the programmable/recall memory option. The DSM is located on the driver seat track.
This system allows automatic positioning of the driver seat to 2 programmable positions.

• A power driver seat position can be stored at any time. The driver must move the seat to the desired position using the driver seat switch assembly. The driver must then depress the memory SET switch which activates the memory SET switch light emitting diode (LED). Within 5 seconds (before the LED goes out), the driver must select a memory position. Memory 1 is selected by depressing memory switch 1. Memory 2 is selected by depressing memory switch 2.
• If no memory switch input is received within the 5-second time limit, the operation is aborted and the memory seat position switch (set switch) LED is turned OFF. This also occurs if one of the following inputs is received during the 5-second programming limit:
  • Driver seat control switch
  • Memory seat position switch (set switch)
  • Power adjustable pedal switch

A programmed seat position can only be recalled when the transmission selector is in PARK or NEUTRAL with the ignition switch in the RUN position. A position may be programmed at any time.

Easy Entry/Easy Exit
The driver power seat easy entry/easy exit feature can be enabled/disabled. Refer to Section 418-01 or the owner's literature.

This may need to be done with a scan tool

See pg. 3-31 in owners manual. Start car in park. Adjust seat, telescoping wheel, and side view mirrors. Pust Mem button and then within 5 sec. push either 1 or 2. That button should light to show memory stored.
From the 2012 Guide (See link)
l"AUTOMATIC DRIVE POSITIONER (if so equipped) Two positions for the driver's seat, steering column and outside mirrors can be stored in the automatic drive positioner memory. Follow these procedures to set the memory positions: • Confirm the shift lever is in the P (PARK) position. • Push the ignition switch to the ON position. • Adjust the driver's seat, steering column and outside mirrors to the desired positions using the adjusting switches for each feature. • Push the SET switch and within 5 seconds, push the memory switch (1 or 2) for at least 1 second. • The indicator light on the memory switch you select will illuminate for approximately 5 seconds. • The driver's seat, steering column and outside mirror positions are now set to your preference. These memorized positions can also be linked to your NISSAN Intelligent Key®. For more information, refer to the "Pre-driving checks and adjustments (section 3)" of your Owner's Manual." https://owners.nissanusa.com/content/techpub/ManualsAndGuides/Murano/2012/2012-Murano-quick-reference-guide.pdf
For added info see whole owners manual.

Only one light inside light works on my Lexus SC430 and I have been told that I have to replace the whole part which is about $700 because it is computerized. Is this true

Position items,press set ,then #1 or #2

No owners manual ?

Helm.com --- to buy one

For mirrors you need to move the switch to the side you want

i have lexus sc430 2002. light will flash on the open , but nothing happens
please help , need the air whissling threw my hair. thanks

Hello. On the 2000 ES300 the seat memory buttons also remember the position of the side mirrors at the time of programming. Are you using the seat memory to bring your seat to position each morning? If so youl'll want to reprogram your memory button with the mirrors in the position that you want them to be and it will auto adjust the mirrors when you press the seat meory button.

That is probably because the setting for the mirror had been saved in the memory along with the setting for the driver's seat position (if your model has programmable memory for seat position. Set the mirror in the most convenient position and also the driver's seat. Press and hold the MEM button on your driver's seat and press any of the memory numbers. This will store those settings in the memory so that even if someone else alter these setting, the mirror and the seat will be adjusted to the memorised setting when you use the remote to open the car.

its very possable the ecu is damaged, but you will need to check all the fuses and or fuseable links