well I put them on my wifes kia sportage last year about this time maybe a bit sooner. well they stopped working which we did not find out till after the storm we had friday and she got stuck in a snow drift. well I took them apart and I had to clean them out. some parts had rust on them and the alum housing oxidized so it wouldnt let the parts move to lock in. so i cleaned them up and greased them up. they work great again. so just wanted to let you all know that you might want to check them and even take them apart and clean and grease them up.