ParadoxRogue404

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Joined
Mar 13, 2025
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just did the transfer case and rear differential fluid change on my 2021 highlander v6 awd. toyota recommends this every 48k km, but i did it around 42k km. if you're in the same boat with a v6, this guide might help you save some cash.

if you've got a hybrid or fwd model, this won't apply.

the job's easy if you've got the right tools, but on the 2020+ highlander, the fill plug for the transfer case is tucked under the engine/transmission, making it tricky to reach. no socket/ratchet can fit, but i found a couple cheap tools to get the job done.
 
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