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.
2025 Lexus NX 250 FWDFACTORY OEM SERVICE PROCEDURE
External Pages
These are pages that do not belong to the exact selected vehicle (2025 Lexus NX 250 FWD), 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
- Different car
- Section 1 (Can Communication System - Diagnostics - Introduction (4 Of 6))
- Section 2 (Can Communication System - Diagnostics - Introduction (1 Of 6))
- Section 3 (Electronic A/T Shift Lever System - Diagnostic Codes & Circuit Tests)
- Section 4 (Hybrid Control System - Diagnostics - Introduction (2 Of 2))
- Section 5 (Hybrid Battery System - Diagnostic Codes (2 Of 2) & Circuit Tests)
- Section 6 (Electronically Controlled Brake System - Diagnostic Codes (5 Of 6))
- Section 7 (Electronically Controlled Brake System - Diagnostic Codes (4 Of 6))
- Section 8 (Electronically Controlled Brake System - Diagnostics - Introduction (1 Of 2))
- Section 9 (Electronically Controlled Brake System - Diagnostic Codes (3 Of 6))
- Section 10 (Electronically Controlled Brake System - Diagnostic Codes (1 Of 6))
- Section 11 (Electronically Controlled Brake System - Diagnostic Codes (2 Of 6))
- Section 12 (Electronic A/T Shift Lever System - Diagnostics - Introduction)
- Section 13 (Hybrid Transaxle System (P810) - Service Information)
- Section 14 (Smart Access System (For Start) - Diagnostics - Introduction (1 Of 2))
- Section 15 (Hybrid Battery Control System - Service Information (1 Of 2))
- Section 16 (Battery / Charging System - Diagnostic Codes & Symptom Tests)
- Section 17 (Engine Lubrication System - Inspection)
- Section 18 (Engine Control System - Diagnostic Codes (P050B-P0524))
- Section 19 (Engine Control System - Diagnostic Codes (P0524-P064A))
- Section 20 (Can Communication System - Diagnostics - Introduction (5 Of 6))
- Section 21 (Can Communication System - Diagnostics - Introduction (6 Of 6))
- Section 22 (Heating / Air Conditioning System - Diagnostic Codes, Circuit Tests & Symptom Tests)
- Section 23 (Heating / Air Conditioning System - Diagnostics - Introduction)
- Section 24 (Hybrid Control System - Diagnostics - Introduction (1 Of 2))
- Section 25 (Cooling Fan System - Inspection)
- Section 26 (Auxiliary Battery System - Service Information)
- Section 27 (Engine Cooling System - Inspection)
- Section 28 (Engine Cooling System - Service Information)
- Section 29 (Engine Starting System (Service Specifications))
- Section 30 (Motor Generator Control System - Diagnostic Codes (5 Of 5))
- Section 31 (Motor Generator Control System - Diagnostic Codes (4 Of 5))
- Section 32 (Motor Generator Control System - Diagnostics - Introduction (1 Of 2))
- Section 33 (Hybrid Control System - Diagnostic Codes (5 Of 5) & Circuit Tests)
- Section 34 (Hybrid Battery System - Diagnostics - Introduction)
- Section 35 (Hybrid Control System - Diagnostic Codes (4 Of 5))
- Section 36 (Motor Generator Control System - Diagnostic Codes (1 Of 5))
- Section 37 (Motor Generator Control System - Diagnostic Codes (3 Of 5))
- Section 38 (Engine Control System - Diagnostics - Introduction (3 Of 4))
- Section 39 (Engine Control System - Diagnostics - Introduction (4 Of 4))
- Section 40 (Hybrid Control System - Diagnostic Codes (1 Of 5))
- Section 41 (Engine Lubrication System - Service Information)
- Section 42 (Engine Mechanical System - Service Information (2 Of 4))
- Section 43 (Engine Lubrication System - Inspection)
- Section 44 (Engine Mechanical System - Service Information (3 Of 4))
- Section 45 (Engine Mechanical System - Service Information (4 Of 4))
- Section 46 (Engine Control System - Diagnostics - Introduction (1 Of 4))
- Section 47 (Automatic Transaxle System - Diagnostics - Introduction)
- Section 48 (Engine Mechanical System - Service Information (1 Of 4))
- Section 49 (Emission Control System - Service Information)
- Section 50 (Smart Access System (For Start) - Diagnostics - Introduction (2 Of 2))
- Section 51 (Engine Control System - Service Information)
- Section 52 (Electric Parking Brake System - Diagnostics - Introduction)
- Section 53 (Electric Parking Brake System - Diagnostic Codes, Symptom Tests & Circuit Tests)
- Section 54 (Electronically Controlled Brake System - Diagnostic Codes (6 Of 6), Symptom Tests & Circuit Tests)
- Section 55 (Engine Lubrication System - Service Information)
- Section 56 (Engine Mechanical System - Service Information (2 Of 4))
- Section 57 (Automatic Transaxle System - Service Information (1 Of 2))
- Section 58 (Fuel System - Service Information)
- Section 59 (Engine Control System - Diagnostics - Introduction (1 Of 4))
- Section 60 (Fuel System - Inspection)
- Section 61 (Engine Control System - Service Information)
- Section 62 (Emission Control System - Service Information)
- Section 63 (Engine Intake / Exhaust System - Service Information)
- Section 64 (Hybrid Battery Control System - Service Information (2 Of 2))
- Section 65 (Engine Control System - Diagnostic Codes (P0340-P043E))
- Section 66 (Engine Control System - Diagnostic Codes (P0325-P0340))
- Section 67 (Engine Mechanical System - Service Information (1 Of 4))
- Section 68 (Engine Intake System - Inspection)
- Section 69 (Engine Control System - Diagnostics - Introduction (2 Of 4))
- Section 70 (Engine Control System - Diagnostic Codes (P0136-P0190))
- Section 71 (Engine Control System - Circuit Tests & Symptom Tests)
- Section 72 (Motor Generator Control System - Diagnostic Codes (2 Of 5))
- Section 73 (Acoustic Vehicle Alerting System - Service Information)
- Section 74 (Smart Access System (For Entry) - Diagnostics - Introduction)
- Section 75 (Electronic A/T Shift Lever System - Diagnostics - Introduction)
- Section 76 (Engine Starting System - Service Information)
- Section 77 (Engine Control System - Diagnostic Codes (P0300-P0325))
- Section 78 (Engine Control System - Diagnostic Codes (P0069-P0110))
- Section 79 (Ignition System - Inspection)
- Section 80 (Engine Mechanical System - Service Information (3 Of 4))
- Section 81 (Hybrid Battery System - Diagnostic Codes (1 Of 2))
- Section 82 (Can Communication System - Circuit Tests (1 Of 9) & Diagnostic Codes)
- Section 83 (Battery / Charging System - Diagnostic Codes & Symptom Tests)
- Section 84 (Engine Cooling System - Inspection)
- Section 85 (Engine Cooling System - Service Information)
- Section 86 (Can Communication System - Circuit Tests (6 Of 9))
- Section 87 (Engine Control System - Diagnostic Codes (P0010-P0069))
- Section 88 (Engine Control System - Diagnostic Codes (P11EA-P1422))
- Section 89 (Can Communication System - Circuit Tests (4 Of 9))
- Section 90 (Ignition System - Inspection)
- Section 91 (Engine Control System - Circuit Tests (2 Of 2) & Symptom Tests)
- Section 92 (Smart Access System (For Entry) - Diagnostic Codes & Symptom Tests)
- Section 93 (Acoustic Vehicle Alerting System - Diagnostics - Introduction)
- Section 94 (Hybrid Control System - Diagnostic Codes (2 Of 5))
- Section 95 (Can Communication System - Diagnostics - Introduction (2 Of 6))
- Section 96 (Can Communication System - Diagnostics - Introduction (3 Of 6))
- Section 97 (Can Communication System - Circuit Tests (3 Of 9))
- Section 98 (Can Communication System - Circuit Tests (5 Of 9))
- Section 99 (Can Communication System - Circuit Tests (7 Of 9))
- Section 100 (Can Communication System - Circuit Tests (8 Of 9))
- Section 101 (Can Communication System - Circuit Tests (9 Of 9))
- Section 102 (Can Communication System - Circuit Tests (2 Of 9))
- Section 103 (Engine Control System - Diagnostic Codes (P0110-P012F))
- Section 104 (Engine Control System - Diagnostic Codes (P0190-P0220))
- Section 105 (Engine Control System - Diagnostic Codes (P0441-P050B))
- Section 106 (Engine Control System - Diagnostic Codes (P064A-P11EA))
- Section 107 (Engine Control System - Diagnostic Codes (P1450-P2195))
- Section 108 (Engine Control System - Diagnostic Codes (P21CF-P26CA))
- Section 109 (Engine Control System - Diagnostic Codes (P26CA-U1150))
- Section 110 (Electronically Controlled Brake System - Diagnostics - Introduction (2 Of 2))
- Section 111 (Engine Control System - Diagnostics - Introduction (3 Of 4))
- Section 112 (Engine Control System - Diagnostics - Introduction (4 Of 4))
- Section 113 (Fuel System - Service Information)
- Section 114 (Engine Mechanical System - Service Information (4 Of 4))
- Section 115 (Engine Intake / Exhaust System - Service Information)
- Section 116 (Dynamic Torque Control AWD System (Type A) - Diagnostics - Introduction)
- Section 117 (Emission Control System - Inspection)
- Section 118 (Electronic A/T Shift Lever System - Diagnostic Codes & Circuit Tests)
- Section 119 (Automatic Transaxle System - Service Information (2 Of 2))
- Section 120 (Smart Access System (For Entry) - Symptom Tests)
- Section 121 (Engine Control System - Diagnostic Codes (P0010-P007A))
- Section 122 (Engine Control System - Diagnostics - Introduction (2 Of 4))
- Section 123 (Engine Control System - Diagnostic Codes (P0136-P0190))
- Section 124 (Engine Control System - Diagnostic Codes (P22AB-U115C) & Circuit Tests (1 Of 2))
- Section 125 (Engine Control System - Diagnostic Codes (P0087-P012F))
- Section 126 (Engine Control System - Diagnostic Codes (P0190-P02EE))
- Section 127 (Engine Control System - Diagnostic Codes (P0300-P0460))
- Section 128 (Engine Control System - Diagnostic Codes (P0460-P0604))
- Section 129 (Engine Control System - Diagnostic Codes (P0606-P11EA))
- Section 130 (Engine Control System - Diagnostic Codes (P11EA-P2065))
- Section 131 (Engine Control System - Diagnostic Codes (P2100-P2270))
- Section 132 (Battery / Charging System (Service Specifications))
- Section 133 (Hybrid Transaxle System / Rear Traction Motor (Q610) - Service Information)
- Section 134 (Engine Starting System (Service Specifications))
- Section 135 (Smart Access System (For Start) - Diagnostic Codes & Symptom Tests (1 Of 2))
- Section 136 (Engine Intake System - Inspection)
- Section 137 (Engine Mechanical System (Service Specifications))
- Section 138 (Automatic Transaxle System - Diagnostic Codes (1 Of 3))
- Section 139 (Fuel System - Inspection)
- Section 140 (Battery / Charging System (Service Specifications))
- Section 141 (Acoustic Vehicle Alerting System - Diagnostic Codes & Symptom Tests)
- Section 142 (Dynamic Torque Control AWD System (Type A) - Diagnostic Codes & Symptom Tests)
- Section 143 (Hybrid Control System - Diagnostic Codes (3 Of 5))
- Section 144 (Power Switch - Service Information)
- Section 145 (Battery / Charging System - Diagnostics - Introduction)
- Section 146 (Battery / Charging System - Service Information)
- Section 147 (Smart Access System (For Start) - Symptom Tests (2 Of 2))
- Section 148 (Motor Generator Control System - Diagnostics - Introduction (2 Of 2))
- Section 149 (Engine Cooling System (Service Specifications))
- Section 150 (Automatic Transaxle System - Diagnostic Codes (3 Of 3) & Circuit Tests)
- Section 151 (Automatic Transaxle System - Diagnostic Codes (2 Of 3))
- Section 152 (Battery / Charging System - Diagnostics - Introduction)
- Section 153 (Engine Mechanical System (Service Specifications))
- Section 154 (Engine Cooling System (Service Specifications))
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
