4wd hi light flashing, but will not engage.

Asked by Dec 29, 2015 at 11:27 AM about the 2005 Toyota Tundra 4 Dr SR5 4WD Extended Cab Stepside SB

Question type: Maintenance & Repair

2005 Toyota Tundra 4x4 ex cab. When I push the 4wd hi button, light flashing
without engaging. Tryed slow, stopped, forward, reverse.  No luck.

4 Answers


Most common is the transfercase servo motor, over time the brushes wear and the motor will no longer turn, you can try lightly tapping on the motor as someone pushes the button and see if it runs, otherwise you will have to do the involved circuit test to and from the controller to make sure it is getting the proper signals in and voltages out. HTH

3 of 3 people found this helpful.

Dude you were right, tapped on it and wolla!! frigging works every time!!!!!


Good, but it will eventually fail altogether.

Where is the transfer case servo motor?

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