Uneek summed it up!!DAC, you need to be in 4L and press the DAC button on the center console. Keep your foot off the gas and brake, DAC will do its thing when you're going downhill at about 2-3mph.
HAC, it's automatic. When you're going uphill on a steep enough grade, take your foot off the brake. The brakes will remain engaged, keeping the 4Runner from rolling backwards. There will be some amount of chatter as the brakes are working. I think it'll only hold the 4Runner for 5 seconds max and disengages when you hit the gas. HAC is meant to keep the 4Runner from rolling back going uphill, so you don't need to use two feet.
Would HAC do it's thing going uphill @ 2-3 mph?
DAC, you need to be in 4L and press the DAC button on the center console. Keep your foot off the gas and brake, DAC will do its thing when you're going downhill at about 2-3mph.
HAC, it's automatic. When you're going uphill on a steep enough grade, take your foot off the brake. The brakes will remain engaged, keeping the 4Runner from rolling backwards. There will be some amount of chatter as the brakes are working. I think it'll only hold the 4Runner for 5 seconds max and disengages when you hit the gas. HAC is meant to keep the 4Runner from rolling back going uphill, so you don't need to use two feet.