He said the lower control arms looked cracked - one doubts that’s likely, but that’s what he wrote. I am aware of wheel steering knuckles fracturing ('60’s Fords), until they tracked down and fixed the cause - it was premature metal fatigue in initiated by stress concentration at an indentation tester pit (ironically, a quality control test) and easily fixed. A steering shaft coupler grenaded with a bang on our Mercury Villager (suspect locked in stresses from manufacturing, it looked like a power metallurgy part). It occasionally happens that a supplier gets a bad batch of steel, or messes up heat treating with the result that something that should be strong and ductile turns out hard and brittle.
A monkey could do it.
Maybe a monkey could do it
But the monkey still needs a lot of time
This isn’t a job that’s going to be completed in one hour . . . not even close
I am not sure on the Sienna, but several other Toyota/Lexus vehicles list a very inflated book time for this labor operation
I can tell you from professional experience . . . it’s EASILY a few hours of work
Translation . . . the mechanic will be earning his keep that day
I think the Highlander is around 12 hours!
My brother has a 2008 Highlander . . . essentially the same setup as op’s Sienna
The factory procedure requires removing the hub and struts
it’s nearly impossible to separate the ball joint from the hub, unless/until you’ve either removed the cv halfshaft completely or moved it out of the way
Guess what . . . you can’t remove the struts unless you actually remove the plastic cowl
Translation . . . it really is a lot of work
And as I’ve said before, if you’ve reached the point where the lower arms actually need to be replaced, you would be very wise to consider replacing the cv halfshafts, tie rod ends and ball joints at that time, as it would be no extra labor at that point, and the van might have 120K or 150K by then
If the control arms (metal parts) are cracked
Very unlikely, unless the control arms have been covered in brines for years and eaten away . . . at which point the rest of the van might also have the consistency of swiss cheese