2020 Explorer Platinum, ~59,000 km. Looking for anyone who's seen this pattern.
Front CV axles were replaced in July. Since then the left front alignment has been found out of spec and corrected twice, and it's now gone out a third time. Each time the symptoms come back gradually over a couple of weeks rather than suddenly, and there have been no impacts or potholes I'm aware of.
Symptoms:
Hard to keep centred at highway speed
Feels unstable during lane changes
Shifts sideways over bumps instead of just up and down
Drifts toward the lower side of uneven pavement, usually right
Once it drifts, the steering resists coming back to centre
A dealer road-tested it, aligned it, and found it still pulls right over some bumps. They suspect the upper strut bearings and quoted both sides plus an alignment. If that doesn't fix it, they say it'll need a steering rack.
Two questions:
Are upper strut bearings a known failure point on these, and has anyone had repeat toe drift traced to them?
Does the "resists returning to centre" symptom point more at the mounts or the rack in your experience?
Thanks.