4x4 glitch

When i start my truck in the morning, the 4x4 indicator flashes (as if it failed to shift) until i get moving. Even though it’s been in 2wd for a couple weeks. May be temperature based as it doesn’t do it throughout the day.


SOLVED: Front differential actuator was bad. Eventually went out completely and defaulted to 2wd - great in a white-out blizzard! Displayed 2WD-4WD Mode Change Failure on the dashboard

probably caused by this incident months prior


EDIT::: 10,000 miles or so later, after the shop replaced the faulty front differential actuator, i’ve started to get that strange green 4x4 indicator light incessantly flashing on start-up, when no 4x4 request was made. Again. Wheee

Edit 8/19/20 - per Toyota’s tech assistance service, they’ve decided to replace the front differential actuator again. Allegedly they’ve been having issues with water intrusion in rainy climates and they’ve redesigned the part to correct this. But the part number is the same one they put in back in December, so i’m not sure about that

 

Flashes green or amber?
Flashes at normal speed or double speed?
Get a lot of condensation on your truck in the morning?

 

Green.... normal?

and, depends on the day. Haven’t been paying attention to that

 

Switch it 4hi and cycle back to2wd. Maybe the cpu is stuck

 

^ that seems to have fixed it. Thanks

 

It happens. Computers make mistakes too

 

Hmm, happened again this morning. Dry day, 64 degrees. Cycling into and out of 4x4 seems to fix it, still, very odd

This taco is a trouble child

 

Were you in 4x4 before you parked it?

 

No, and like last time hadn’t been for probably a thousand miles

 

Solved it. Bad front diff actuator