turn the wiper on and cut the ignition power once the arm is in the 12 O'clock position for easier access to the wiper. Disconnect rubber washer fluid hose from wiper. Lift arm off of the windshield, and notice where wiper connects to the arm, there's a small plastic locking lever. Squeeze to release, then remove wiper. may take some wiggling back and forth till it comes off. Once off, you can either replace the wiper refills, or replace the entire wiper blades with new ones. Note: the oem wiper blades have hoses on them which washer fluid flows through. So if you go with aftermarket blades, you will lose your wiper washer feature, and fluid will squirt everywhere unless you cap off the rubber hoses.
I would say NO as the lucida and estima and previa are all different in length and width if you can find replacment arms etc from eBay
No
You will have to remove the wiper arms, then remove the cowl, and then the wiper motor.
I'm unsure how to replace the arms on the Previa, mine is a 92, but here is what I did. The washer nozzles are built into the wiper arms so I figured they would be expensive and difficult to replace since they were rusted I wanted to do something. I just used a wire wheel on them to know the rust off. Put some newspaper under the arms and used some Rustoleum flat black paint. Looks pretty much new and it was under 5 bucks. Hope this helps
front wiper relay
No, just replace it.
Remove the wiring harness from the back of your 1995 Chevy Lumina front wiper motor. Remove the traveling arm linkage from the wiper motor. Remove the wiper motor retaining bolts. Reverse the process to install the new front wiper motor.
Try the dealer, or scrounge through junkyards by phone or internet, e-bay.
Unless the actual arm is broken, I would just replace the rubber. You can order it from Toyota, and its way cheaper than a whole wipe arm.
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Since this is a non-USA model, I'm not 100% sure what kind of wiper arms are on it. If you can determine the wiper arms, below is a link that has videos for nearly any wiper arm.