2012 Toyota 4Runner Owners Manual - Page 549

2 -4 . U sing ot he r driving syst e m s Re a r diffe re nt ia l lock syst e m ∗ The rear differential lock system is provided for use only when wheel spinning occurs in a ditch or on a slippery or rugged surface. The rear differential lock system is effective in case one of the rear wheels is spinning. Press the switch to lock the rear differential. At this time, the rear differential lock indicator will flash. Wait a few seconds for the system to complete operation. After the rear differential is locked, the indicator will stop flashing and remain on. To unlock the rear differential, press the switch again. CTH24AS056 ∗: If equipped 248 4RUNNER_U