Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS1999RX 300 AWD V6-3.0L (1MZ-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTRANSMISSION POSITION SENSOR/SWITCHSERVICE AND REPAIR
1999 Lexus RX 300 AWD V6-3.0L (1MZ-FE)
Transmission Position Sensor/Switch: Service and Repair
1999 Lexus RX 300 AWD V6-3.0L (1MZ-FE)SECTION Service and Repair
ON-VEHICLE REPAIR
1. REMOVE ENGINE UNDER COVER
2. DISCONNECT PARK/NEUTRAL POSITION SWITCH CONNECTOR
3. REMOVE PARK/NEUTRAL POSITION SWITCH
a. Remove the nut.
b. Remove the nut, washer and control shaft lever.
c. Using a screwdriver, pry off the lock plate.
d. Remove the nut and lock plate.
e. Remove the 2 bolts and pull out the park/neutral position switch.
4. INSTALL AND ADJUST PARK/NEUTRAL POSITION SWITCH
a. Install the park/neutral position switch with the 2 bolts.
Torque: 5.4 Nm (55 kgf cm, 48 inch lbs.)
b. Install a new lock plate and nut.
Torque: 6.9 Nm (70 kgf cm, 61 inch lbs.)
c. Bend the claws on the lock plate to fix the nut.
d. Install the control shaft lever with the nut.
Torque: 13 Nm (130 kgf cm, 9 ft. lbs.)
e. Connect the shift control cable to the control shaft.
Torque: 15 Nm (150 kgf cm, 11 ft. lbs.)
5. CONNECT PARK/NEUTRAL POSITION SWITCH CONNECTOR
6. CHECK PARK/NEUTRAL POSITION OPERATION
Check that the engine can be started with the shift lever only in the N or P position, but not in other position. If the engine cannot be started not as stated above, carry out the adjustment procedure.
7. INSTALL ENGINE UNDER COVER
8. TEST DRIVE VEHICLE
1. REMOVE ENGINE UNDER COVER
2. DISCONNECT PARK/NEUTRAL POSITION SWITCH CONNECTOR
3. REMOVE PARK/NEUTRAL POSITION SWITCH
a. Remove the nut.
b. Remove the nut, washer and control shaft lever.
c. Using a screwdriver, pry off the lock plate.
d. Remove the nut and lock plate.
e. Remove the 2 bolts and pull out the park/neutral position switch.
4. INSTALL AND ADJUST PARK/NEUTRAL POSITION SWITCH
a. Install the park/neutral position switch with the 2 bolts.
Torque: 5.4 Nm (55 kgf cm, 48 inch lbs.)
b. Install a new lock plate and nut.
Torque: 6.9 Nm (70 kgf cm, 61 inch lbs.)
c. Bend the claws on the lock plate to fix the nut.
d. Install the control shaft lever with the nut.
Torque: 13 Nm (130 kgf cm, 9 ft. lbs.)
e. Connect the shift control cable to the control shaft.
Torque: 15 Nm (150 kgf cm, 11 ft. lbs.)
5. CONNECT PARK/NEUTRAL POSITION SWITCH CONNECTOR
6. CHECK PARK/NEUTRAL POSITION OPERATION
Check that the engine can be started with the shift lever only in the N or P position, but not in other position. If the engine cannot be started not as stated above, carry out the adjustment procedure.
7. INSTALL ENGINE UNDER COVER
8. TEST DRIVE VEHICLE
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.