When Servicing Full-Time 4WD Vehicles

WHEN SERVICING FULL-TIME 4WD VEHICLES




The Full-time 4WD LEXUS GX470 is equipped with the mechanical lock type center differential system.




During tests that require the use of a brake tester or chassis dynamometer, such as braking force tests or speedometer tests, if only the front or rear wheels are to be rotated, it is necessary to set the position of the center differential to FREE or LOCK depending on the type of the test being performed.











NOTE:
Center differential "LOCK"<->"FREE" selecting procedures:
- Operate the switch only when all 4 wheels are stopped or driving in a straight line.
- Never operate the switch when any wheel is slipping.
- Never operate the switch when any wheel is spinning freely.
- Never operate the switch when swerving or cornering.




Transfer gear H<->L gear shifting procedures:
When shifting, always put the shift lever of the transmission in N position. In other positions, the transfer gear cannot be changed.

HINT: Center differential "LOCK"<->"FREE" selecting procedures:
Move the vehicle forward or backward slightly if the indicator light does not operate correctly when the center differential lock switch is turned ON or OFF