Wiper blades overextended

ANSWER : You can use a mild polish like a toothpaste that will clean the glass without scratching the glass. Use it with small circular motion to polish off the marks.

ANSWER : It sounds like your may have some wiper blade linkage problems. I would have a technician come out and remove the wiper access panel and inspect the linkage connected to the wiper blades. They might just need to be removed and readjusted. I would recommend having your wiper system inspected to have the proper repairs made.

ANSWER : Hi Josh. First, it’s always best to replace the wiper motor, wiper arms and wiper blades in one rather easy swap, but if you plan on keeping the vehicle for a few more ears, i’d suggest buying new parts. To access the wiper motor, you might want to search online for a Land Cruiser repair and service manual, as this will give you step-by-step instructions for completing this service.

ANSWER : I would recommend stoping by your local dealer and getting a pair of Nissan wiper blades for your car. Then I would get a good quality window cleaner and try and clean off the windows. If you are using a washer fluid with additives like Rain-X, then this fluid may put a film on your window that will not let the wiper make good contact with the window after it starts to build up. Try and use just plain window washer fluid and clean your windshield real good. This should fix the issue. If this doesn’t fix the problem, then have the windshield wiper system inspected for bent wiper arms and or defective glass on the window.

ANSWER : I suggest first inspecting the wiper crank arm assembly between the wiper linkage and the motor. It may have slipped out of position. If that is secure, then yes, it sounds like you need the wiper motor and module assembly. If you need help having this checked, a qualified technician from YourMechanic can inspect your wiper system and perform the needed repair.

ANSWER : You will have to replace the "wiper arm shaft" and/or wiper arm for the side which isn’t working. Both of these components have very small splines which interlock when the nut is tightened. A heavy snow or ice load can cause the splines to break down, or strip, rather than damage the electric motor. A certified technician from YourMechanic can replace the windshield wiper arm at your home or office.

ANSWER : You can try to use a heat gun (REALLY carefully though, unless you intend to scrap your car) to melt any ice on the linkages to ensure that the linkages are not mechanically binding anywhere (due to ice; they can, of course, bind due to other causes). Of course, if it’s REALLY cold out, even that strategy is going to be problematic because whatever you unfreeze could instantly re-freeze. You just have to judge your circumstances or put the car in a warm garage for a short while. Heat gun or no heat gun, if you judge that there are no mechanical blockages, and you can SEE the motor turning, and yet the wipers aren’t moving, you could have stripped (broken) linkages.
If you cannot see what the motor is doing, the noise you are hearing could be the "humming" of a stuck motor, as opposed to an actually functioning motor. If you desire that the issue be diagnosed and the root cause(s) repaired simply request a non working wiper diagnostic and a certified mechanic will come right to your location and get this resolved for you. Please let us know if you have additional or followup questions.

ANSWER : The rear wiper arm may be stripped out. If you remove the retainer cover and then move the wiper arm by hand to see if the shaft does not move when you move the wiper arm. Replace the wiper arm if it is stripped out or metal retainer is broke loose from arm.