2007 Toyota 4Runner Owners Manual - Page 185

06 06.07 (b) A.D.D. (automatic disconnecting differential) The A.D.D. can be engaged or disengaged by the shifting operations described in "(c) Shifting procedure". You should drive in four−wheel drive for at least 16 km (10 miles) each month. This will assure that the front drive components are lubricated. (c) Shifting procedure SHIFTING BETWEEN "H2" (UNLOCKED) AND "H4" To shift from "H4" (unlocked) to "H2", turn the multi−mode control switch knob fully counterclockwise. This can be done at any speed. If the four−wheel drive indicator light continues to blink when you operate the multi−mode control switch knob from the "H4" to the "H2" position, this reminds you that the transfer mode is not securely in "H2" mode. Drive straight ahead while accelerating or decelerating, or drive forward or backward in a short distance. If the indicator light continues to blink even if doing so, contact your Toyota dealer as soon as possible. There may be a trouble in the four−wheel drive system. To shift from "H2" to "H4" (unlocked), reduce the vehicle speed to less than 100 km/h (62 mph) and turn the multi−mode control switch knob fully clockwise. If the four−wheel drive indicator light continues to blink when you operate the multi−mode control switch knob from the "H2" to the "H4" position, this reminds you that the transfer mode is not securely in "H4" mode. Drive straight ahead while accelerating or decelerating. If the four−wheel drive indicator light continues to blink and the buzzer sounds when you operate the multi−mode control switch knob from the "H2" to the "H4" position, this reminds you that the transfer mode is not in "H4" mode. Stop the vehicle or reduce the vehicle speed to less than 100 km/h (62 mph). Operate the switch knob again. CAUTION Never operate the multi−mode control switch knob if the wheels are slipping. Stop the slipping or spinning before operating. 2007 4Runner from Aug. '06 Prod. (OM35866U) 169