I've had ongoing issues with the driver's side window going up when it's supposed to go down, down when it's supposed to go up, or not moving. I removed the power window switch (there's a clip under where the lock/unlock button is), unplugged the assembly and took it apart. The four small Phillips head screws holding the light-covered cover are the ones you remove. Then, you'll see the circuit board. There are two relays on that board. The larger one is in the driver's side window circuit. It is marked CR2-12v. That's the culprit. After much searching, I found it on line. I replaced the one in my 170,000 mile '01 RX-300, reassembled everything and the window now works perfectly. Finally!!
BTW, I bought two relays if anyone needs one and can't find it on their own.
What a PITA that window has been...
Sorry to drudge up an old post.
Can confirm this fixes the window switch problem. Ordered two of these relays from a company in Hong Kong. De-soldered the old relay, cleaned up the points, then soldered the new relay in. Works like a champ now.
Believe I Have Solved The Flaky Power Window Issue!
in 99 - 03 Lexus RX300
Posted
Sorry to drudge up an old post.
Can confirm this fixes the window switch problem. Ordered two of these relays from a company in Hong Kong. De-soldered the old relay, cleaned up the points, then soldered the new relay in. Works like a champ now.