Toyota FJ Cruiser Instructions For Adjusting And Operating page 151

Manual transmission
Before using the rear differential lock system.
Shift the four−wheel drive control lever into LL to see if this is
sufficient. If this has no effect, additionally use the rear differ−
ential lock system.
Be sure to stop the wheels.
Depress the clutch pedal.
Press the RR DIFF LOCK switch.
After the rear differential is locked, the indicator will come on.
Slowly release the clutch pedal.
Unlock the rear differential as soon as the vehicle moves out.
To unlock the rear differential, push the switch again.
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Locking the rear differential
l When the rear differential is locked, VSC is automatically turned off.
(The rear differential lock and VSC OFF indicators come on.)
l The following systems do not operate when the rear differential is locked.
It is normal operation for the ABS warning light, VSC OFF indicator and
slip indicator to be on at this time.
SABS
S Brake assist system
SVSC
STRAC
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The rear differential lock is disengaged when
l Shift the four−wheel drive control lever to H or HL. (4WD models with a
manual transmission)
l Shift the front−wheel drive control lever to H2 or H4. (4WD models with
an automatic transmission)
Never forget to turn off the switch after using this feature.
n
After unlocking the rear differential
Check the indicator go off, turn the engine switch to the ON position, but do
not start the engine.
2−4. Using other driving systems
2
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