4H not working, 4L is.

[TeeJay333]

2004 3.4L Hilux

4H was working fine now when I press the 4WD button light on dash does not illuminate and definitely isn’t in 4WD. L4 does work though as you don’t need button for that just shift the gear.
Any ideas on where to start looking to fix this

 

[CaptainBanana]

Transfer case actuator failure, it can be tested. Relay that controls the actuator could be dead too.

 

[Hylux]

Us sounds like the electronic actuator if it's an SR5. The SR didn't have one.

 

[Hylux]

Sorry the actuator is on the front diff. Follow the wires.

Us sounds like the electronic actuator if it's an SR5. The SR didn't have one.

O

 

[TeeJay333]

Sorry the actuator is on the front diff. Follow the wires.

O

where can I find that?

 

[Hylux]

Probably easier if you google hilux ADD or look on newhilux.net.
As mentioned you will see the wires connected to it on the front diff. It's a known failure usually from water getting in. I think Toyota only sell them complete but some have been able to clean them up or fit a new motor

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