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 SYSTEMSTECHNICAL SERVICE BULLETINS
1999 Lexus RX 300 AWD V6-3.0L (1MZ-FE)
Computers and Control Systems: Technical Service Bulletins
1999 Lexus RX 300 AWD V6-3.0L (1MZ-FE)SECTION Technical Service Bulletins
- Recalls
- Customer Interest
- By Symptom
- All Technical Service Bulletins
- Canada - Engine Control - Readiness Monitor Drive Patterns
- Engine Controls - A/F And O2 Sensor Identification
- Engine Controls - O2 Sensor Monitor Threshold Values
- OBD II - Readiness Monitor Drive Patterns
- Tools - Customize Program Card - Ver. 1.1 Precautions
- Diagnostic Tester - Customize Program Card Update
- Service Manual - Corrections
- Diagnostic Tester - Communication Error w/TIS
- MIL ON - DTC P1133.
- Engine Mount (Active Control) - System Diagnosis
- Service Manual - Updates
- Diagnostic Trouble Code P0446
- ECM/TCM - Diagnostic Tester Reset Memory Function
- ECM - Reset Learned Values
- Engine Controls - ECU Programming Procedure
- Engine Controls - ECM Memory Reset After A/T Service
- Recall - Body Electronic Control Unit (ECU) Replacement
- Engine Controls - Bank 1/Bank 2 O2 Sensor Identification
RENDER: 1.0x
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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.