Sliding door is grinding as it opens. Can we lube

Remove inner door panel and look while helper operates pad. Probably unlock solenoid needs lube or replacement.

If they are grinding, likely there is no brake material left on the pads. Rotors are not as thick as older ones were so once they are scored, they need to be replaced. Other than that, clean everything off really well and make sure the slides on the calipers are free. (if not, remove and lube them).

check for binding by interior door slide if looks good remove trim ring around interior handle and on plastic lock slide use a dry lube or graphite if still not releasing remove panel --2 screws in arm rest/door grab than carefully pull straight back starting at bottom corner might need a screw driver to release the plastic clips on panel if u have help once panel is off they can hold panel away or you can push out switch panel and remove door panel out of the way check the lock rod plastic clips for damage and or binding repair or replace problem replace panel -good luck

Ha ha.Not my usual type of answer but had the same problem about a month ago.At the bottom of the sliding door is usually 2 rollers.One at either end.They adjust up and down by using a screwdriver.The adjust screw is on the end or on the side of the door.You may only see a screwdriver hole.Adjust it down.Move the slider to the middle of the slide and lift it up and the bottom of the door should lift outwards toward you.This will allow the top of the door to come out of its slide area also.Once the door is out,check the rollers and you can easily see what may be wrong.Hope this is of help

lube everything that moves on that door with white lithium grease, also lube the door latch.

Replace the pads and see if rotor that pad was grinding on can be resurfaced.If not replace it.While you have it apart lube the caliper slide's with anti-seeze or a brake lube so the caliper can move smoothly.

The linkage may have come off handle or lock may need lubing Door panel needs to come off to do this

i just fixed one. it had a broken wire in the harness that moves with the slider, you have to completly pull the harness apart to find it

Something similar to that was happening with our Odyssey...the beeping when you are driving whether it's ongoing or intermittent is the "safety alarm" letting you know the door is not closed. The power lock is not engaging. What I do when I get the beeping while driving is hit the Door Close button. It causes the door to attempt to engage again. To fix it...we first cleaned out the space below the side running board (kids were hiding crayons and things in there), then looked for any obstructions along the top and bottom tracks. I sprayed a lubricant along the tracks (I'd suggest the dry lube kind...I used WD40 the 1st time and had streaks of it dripping down after driving), use a lube that has a long straw to spray in small places...and spray up into the track that runs the length of the middle of the car. Manually open and shut it a few times to get the tracks lubed, then try it out.
If you press the open OR close button by remote or in the car and get nothing...no movement/no noises/no beeping...then it could be the electrical circuit itself, the signal itself may be impeded...or the motor shot. Have you tried any of these suggestions before?

Take a rag with rubbing alcohol and start wiping out all the creavas. Get it spick and span, those dern things are super sensitive a little peice of popcorn kernal will not let it close