The title is the question - is there any way of preventing this seemingly inevitable occurrence....will lubing the window guides regularly help (I guess it would). What about lubing the cable that raises the window - can it be accessed without removing the trim maybe from under the door. Any suggestion would be most appreciated.

My front electric windows were getting slow so I removed the door trim(necessary to gain access but simple job) & sprayed the cable from inside of were it starts to the other end of it & the centre track that the window runs on with a silicon spray lube from bunnings although grease aparently is slightly better again, anyway the spray worked a treat & now run almost twice as fast! Id say its worth doing even if your windows havnt slowed down yet because it allows the motors to work with less load on them.

Thanks for that....I guess I'll have to remove the trims. Mine are still fast and I want to keep them that way.

You should not use silicone lube or grease as both attract dust and over time will dry out

The factory uses Lithium Based grease, this is the best thing you can use and do this every couple of years and you should get a lot more life out of the regulator

yes you are correct, the lithium based grease was what I ment just couldnt think of the name, did my windows a year ago with silicon spray & still fast as ever at least, next time i'll definitely use the correct grease though:P
You should not use silicone lube or grease as both attract dust and over time will dry out

The factory uses Lithium Based grease, this is the best thing you can use and do this every couple of years and you should get a lot more life out of the regulator

"Wurth Curtain and Track Lube" works wonders on the bailey channels, and "Inox MX3 Lubricant" works wonders on the regulator and doesnt trap dust/debris like WD/Si Spray/etc

How about the original powdered graphite - I've got a puff-pack that's probably 50 years old sitting in the shed.

How about the original powdered graphite - I've got a puff-pack that's probably 50 years old sitting in the shed.
will be ok for the bailey channels