2009 Toyota Tacoma Owners Manual - Page 198

2 -4 . U sing ot he r driving syst e m s Re a r diffe re nt ia l lock syst e m (if e quippe d) 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 RR DIFF LOCK switch to lock the rear differential. At this time, the indicator will blink. Wait a few seconds for the system to complete operation. After the rear differential is locked, the rear differential lock indicator will stop blinking and remain on. To unlock the rear differential, push the switch again. Using the rear differential lock system Automatic transmission 4WD models: Before using the rear differential lock system. Stop the vehicle, shift the shift lever to N and put the frontwheel drive control switch in the L4 position to see if this is sufficient. If this has no effect, additionally use the rear differential lock system. Be sure to stop the wheels. Press the RR DIFF LOCK switch. After the rear differential is locked, the indicator will come on. Gently depress the accelerator pedal. Unlock the rear differential as soon as the vehicle moves. To unlock the rear differential, push the switch again. 178