Diff actuator problem

Submitted: Thursday, Aug 11, 2022 at 22:30
ThreadID: 144429 Views:3939 Replies:5 FollowUps:1
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2021 Toyota 79 series is there an issue with the actuator that does not function correctly genuine Toyota factory fitted is it a common occurrence for failure??
Cheers thanks in advance
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Reply By: Bob Y. - Qld - Friday, Aug 12, 2022 at 06:25

Friday, Aug 12, 2022 at 06:25
My rear diff never seems to lock in, while the front one always locks in, ie: warning lights flash, then stay illuminated. Apparently, water/moisture easily accesses the actuator down the breather tube & causes rusting & seizure. Higher breather hose & there is an after market cover that better protects the general area.

Seen it all, Done it all.
Can't remember most of it.

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AnswerID: 641415

Follow Up By: Rojac - Monday, Sep 05, 2022 at 16:31

Monday, Sep 05, 2022 at 16:31
Mine does the same, have already replaced one rear actuator as it got corroded and stopped working, now the replacement has gone the same way, when they work it takes a while to engage and to disengage, I found that increasing the speed slightly it disengages quickly
FollowupID: 920824

Reply By: Shane M11 - Friday, Aug 12, 2022 at 10:16

Friday, Aug 12, 2022 at 10:16
Mine was doing the same - turned out just to be the switch.


Common problem

AnswerID: 641416

Reply By: Phil G - Friday, Aug 12, 2022 at 12:44

Friday, Aug 12, 2022 at 12:44
With the factory lockers I find I need to drive it a little with the steering turned to get the rear to lock in.
AnswerID: 641418

Reply By: Hoyks - Sunday, Aug 14, 2022 at 20:39

Sunday, Aug 14, 2022 at 20:39
Not a Toyota, but my BT50 (Ranger) has a nasty habit of chewing off the power wires to the locking diff inside the housing.
Its a reasonably common issue, but as the diff locks get rarely used and the light tells you its working, most don't know it isn't.
AnswerID: 641437

Reply By: nick g1 - Wednesday, Aug 17, 2022 at 13:39

Wednesday, Aug 17, 2022 at 13:39
They take a bit to engage.
I have a 2017 79 single cab GXL with front and rear lockers.
It usually takes a bit of left and right turning to get them to engage, not just in a straight line. Sometimes about 50meters.
You also should use them fairly often to keep them all in working order. Same as 4wdrive high and low range, use it or lose it!
There all getting a workout currently on the Cape!
AnswerID: 641452

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