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.
2020 Lexus GS 350 Base, RWDFACTORY OEM SERVICE PROCEDURE
External Pages
These are pages that do not belong to the exact selected vehicle (2020 Lexus GS 350 Base, RWD), but are still accessible from a link in your vehicle's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle.
- Different variant/trim
- Section 1 (Automatic Transmission (A760H) - Diagnostics - Introduction)
- Section 2 (All Wheel Drive Control System - Diagnostics - Introduction)
- Section 3 (Transfer Case - Service Information)
- Section 4 (Automatic Transmission (A760H) - Service Information)
- Section 5 (Automatic Transmission (A760H) - Diagnostic Codes (2 Of 2) & Circuit Tests)
- Section 6 (Automatic Transmission (A760H) - Diagnostic Codes (1 Of 2))
- Section 7 (All Wheel Drive Control System - Diagnostic Codes & Symptom Tests)
- Different car
- Section 1 (Starting System (Service Specifications))
- Section 2 (Engine Control System - Diagnostics - Introduction (1 Of 3))
- Section 3 (Engine Control System - Service Information)
- Section 4 (Engine Control System - Diagnostics & Circuit Tests)
- Section 5 (Automatic Transmission (Aa81E) - Diagnostics - Introduction)
- Section 6 (Charging System - Diagnostics - Introduction)
- Section 7 (Engine Lubrication System - Service Information)
- Section 8 (Fuel System - Service Information)
- Section 9 (Engine Cooling System (Inspection))
- Section 10 (Engine Control System - Diagnostic Codes (2 Of 4))
- Section 11 (Engine Control System - Diagnostics - Introduction)
- Section 12 (Engine Control System - Diagnostic Codes (4 Of 4) & Circuit Tests)
- Section 13 (Emission Control System (Inspection))
- Section 14 (Engine Intake System) (Inspection))
- Section 15 (Engine Control System - Service Information)
- Section 16 (Engine Control System - Diagnostic Codes (1 Of 4))
- Section 17 (Fuel System - Inspection)
- Section 18 (Fuel System - Service Information)
- Section 19 (Ignition System (Inspection))
- Section 20 (Engine Mechanical - Service Information)
- Section 21 (Intake / Exhaust System - Service Information)
- Section 22 (Emission Control System (Service Information))
- Section 23 (Wheel Alignment - Inspection & Adjustment)
- Section 24 (Engine Cooling System - Service Information)
- Section 25 (Engine Cooling System - Service Information)
- Section 26 (Engine Cooling System (Inspection))
- Section 27 (Engine Mechanical - Service Information)
- Section 28 (Intake / Exhaust System - Service Information)
- Section 29 (Engine Control System - Diagnostic Codes (1 Of 5))
- Section 30 (Engine Control System - Diagnostics - Introduction (2 Of 3))
- Section 31 (Engine Control System - Diagnostics - Introduction (3 Of 3))
- Section 32 (Engine Control System - Diagnostic Codes & Symptom Tests)
- Section 33 (Engine Control System - Diagnostic Codes (5 Of 5))
- Section 34 (Engine Control System - Diagnostic Codes (3 Of 5))
- Section 35 (Fuel System - Inspection)
- Section 36 (Engine Intake System (Inspection))
- Section 37 (Starting System - Service Information)
- Section 38 (Engine Cooling System - Diagnostics & Circuit Tests)
- Section 39 (Charging System - Service Information)
- Section 40 (Automatic Transmission (Aa81E) - Diagnostic Codes (1 Of 2) & Circuit Tests)
- Section 41 (Automatic Transmission (Aa81E) - Diagnostic Codes (1 Of 3))
- Section 42 (Charging System - Diagnostics & Symptom Tests)
- Section 43 (Emission Control System - Service Information)
- Section 44 (Engine Lubrication (System) (Inspection))
- Section 45 (Starting System - Service Information)
- Section 46 (Automatic Transmission (A760H) - Diagnostics - Introduction)
- Section 47 (Automatic Transmission (Aa81E) - Diagnostics - Introduction)
- Section 48 (Automatic Transmission (Aa81E) - Diagnostic Codes (2 Of 2))
- Section 49 (Ignition System (Inspection))
- Section 50 (Engine Control System - Diagnostic Codes (3 Of 4))
- Section 51 (Charging System - Diagnostics & Symptom Tests)
- Section 52 (Engine Control System - Diagnostic Codes (2 Of 5))
- Section 53 (Engine Control System - Diagnostic Codes (4 Of 5))
- Section 54 (Engine Control System - Diagnostics & Symptom Tests)
- Section 55 (Generator - Service Information)
- Section 56 (Automatic Transmission (Aa81E) - Diagnostic Codes (3 Of 3) & Circuit Tests)
- Section 57 (Engine Cooling System - Diagnostics & Circuit Tests)
- Section 58 (Automatic Transmission (A760H) - Diagnostic Codes & Circuit Tests)
- Section 59 (Engine Lubrication System (Inspection))
- Section 60 (Engine Lubrication System - Service Information)
- Section 61 (Emission Control System (Inspection))
- Section 62 (Automatic Transmission (Aa81E) - Diagnostic Codes (2 Of 3))
- Section 63 (Charging System (Service Specifications))
- Section 64 (Starting System (Inspection))
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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