2003 Toyota Highlander - Won't go into high gear

Occasionally doesn’t want to change into high gear.

I presume you have an automatic transmission. Have you checked the fluid lately? When was the last time it was changed? You might dodge a bullet with basic maintenance.

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Are you accidentally hitting the overdrive lockout button? I think on that model and year it is on the gear selector. I may be mistaken. Check it out.

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