Toyota Tacoma (2005–2015) Owners Manual: Rear differential lock system
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.
Manual transmission
4WD models: Before using the rear
differential lock system.
Stop the vehicle or reduce your speed to less than 2 mph (3 km/h). Depress the clutch pedal and put the front-wheel 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.
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.
To unlock the rear differential, push the switch again.
■Locking the rear differential
●When the rear differential is locked, VSC is automatically turned off.
(The rear differential lock and VSC OFF indicators come on.) ●The following systems do not operate when the rear differential is locked.
It is normal operation for the ABS warning light and VSC OFF indicator to be on at this time. If the DAC switch turns on, the downhill assist control system indicator light flashes.
• ABS
• Brake assist system
• VSC
• TRAC
• Downhill assist control system
• Hill-start assist control system
■The rear differential lock is disengaged when
Shift the front-wheel drive control switch to H2 or H4 position. (4WD models) Never forget to turn off the switch after using this feature.
■After unlocking the rear differential
To check that the indicator goes off, turn the engine switch to the ON position, but do not start the engine.
CAUTION
■To avoid an accident
●Do not use the rear differential lock system except when wheel spinning occurs in a ditch or on a slippery or ragged surface. Large steering effort and careful cornering control will be required.
●Do not lock the rear differential until the wheels have stopped spinning.
Otherwise, the vehicle may move in an unexpected direction when the differential lock is engaged, resulting in an accident. This may also lead to possible damage to differential lock component parts.
●Do not drive over 5 mph (8 km/h) when the differential is locked.
●Do not keep driving with the RR DIFF LOCK switch on.
AUTO LSD system
The AUTO LSD system aids traction by using the traction control system to control
engine performance and braking when one of the rear wheels begins to spin.
The system should be used only when one ...
Downhill Assist Control system
The downhill assist control system helps to prevent excessive speed on steep
downhill descents.
■ System operation
The system will operate when the vehicle is traveling under 15 mph (25 km/h ...
Other materials:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
If a trouble code is displayed during the DTC check, check the circuit listed
for the code in the table below (proceed to the page listed for that circuit).
1. Occupant Detection ECU
HINT:
When DTC B1650/32 is detected as a result of troubleshooting the Supplement ...
Seat belts
Make sure that all occupants are wearing their seat belts before driving the
vehicle.
■ Correct use of the seat belts
● Extend the shoulder belt so that it comes fully over the shoulder, but does
not come into contact with the neck or slide off the shoulder.
● Position the ...
System Description
SYSTEM DESCRIPTION
1. ILLUMINATED ENTRY SYSTEM
(a) The illuminated entry system has the following control functions:
Control
Outline
Lights that Operate
Actuation Area-linked*1
When a registered key enters any actuation area around the ...
