2007-2009 Lexus IS300 IS250 Repair Manual

Nawal — Sun, 13 Dec 2020 20:08:42 +0000

This is the original OEM workshop manual for the 2007-2009 Lexus IS300 and Lexus IS250, available in PDF format. This comprehensive manual includes detailed instructions, wiring diagrams, and schematics to assist with maintenance, troubleshooting, and repairs.

Whether you’re a professional technician or a DIY enthusiast, this manual provides manufacturer-approved guidance for keeping your Lexus IS in excellent condition.

File Format	PDF and Indexed HTML
File Language	English
You’ll Get	218.8 MB
Wiring Diagram	Included
Delivery Method	Instant Download

Features

Models Covered:
- Lexus IS300 (2007–2009)
- Lexus IS250 (2007–2009)
Format: Searchable and well-organized PDF.
Comprehensive Content: Covers repair procedures, electrical schematics, and maintenance tasks.
Authenticity: Official OEM resource used by Lexus dealership technicians.

Why Use This Manual?

Accurate and Reliable: Trusted by Lexus dealership technicians.
Comprehensive Coverage: All systems and components thoroughly explained.
User-Friendly: Clear instructions and easy-to-follow diagrams.

Who Should Use This Manual?

Lexus IS300 & IS250 Owners: Keep your vehicle in peak condition.
Professional Technicians: Access accurate repair and diagnostic procedures.
DIY Enthusiasts: Perform maintenance and repairs with confidence.

Download Now

Access the 2007-2009 Lexus IS300 & IS250 OEM Workshop Manual in PDF format today. With step-by-step instructions, detailed wiring diagrams, and professional guidance, this manual is an essential resource for maintaining your Lexus. 🚗📘

This manual provides detailed instructions for maintenance, disassembly, reassembly, component inspection, adjustment, and diagnostics—intended for use by experienced mechanics. Proper application of this guide will help ensure thorough repairs and maintain your vehicle in peak condition.

Important Note: Before purchasing this manual, please check whether your vehicle is subject to any active service recalls, as authorized dealerships may perform necessary repairs free of charge. When replacing parts, always use genuine OEM components to ensure safety, reliability, and long-term performance.

SAMPLE PAGES: 2007-2009 Lexus IS300 IS250 Repair Manual

CAUTION: This OEM service and workshop repair manual provides detailed procedures for maintenance, disassembly, reassembly, inspection, adjustment, and diagnostics. It is intended as a comprehensive guide for experienced mechanics. To ensure thorough and accurate repairs that maintain your vehicle’s optimal performance, please read and follow this manual carefully. When replacing parts during any repair work, always use genuine Lexus parts to ensure quality, safety, and reliability.

🚗 2007–2009 Lexus IS250 / IS300 – Full Vehicle Overview, Issues, DTCs & Maintenance Guide

The 2007–2009 Lexus IS250 and IS300 represent the second generation of Lexus’ compact luxury sport sedans, combining refined performance, premium comfort, and exceptional reliability. Built on the Toyota N platform, they feature smooth V6 engines, advanced safety systems, and a luxurious cabin. Known for their durability and precision engineering, these models remain a favorite among enthusiasts and daily drivers alike.

⚙️ Technical Specifications & Performance

Engine Options: 2.5L V6 (IS250, 204 hp), 3.0L V6 (IS300, 228 hp)
Transmission: 6-speed manual or 6-speed automatic
Drivetrain: Rear-wheel drive (RWD) / optional all-wheel drive (AWD)
0–100 km/h: ~7.9 sec (IS250), ~7.0 sec (IS300)
Fuel Efficiency: 22–28 MPG combined
Dimensions: Length 4,575 mm, Width 1,795 mm, Height 1,430 mm
Trunk Capacity: 378L

🔧 Top 10 Common Mechanical Issues (Root Cause & Fix)

Carbon buildup in intake valves
🔍 Root Cause: Direct injection design causes deposits.
🛠️ Fix: Perform walnut blasting every 60,000 miles.
Oil leaks from valve cover gaskets
🔍 Root Cause: Gasket deterioration over time.
🛠️ Fix: Replace valve cover gaskets and clean surfaces.
Water pump failure
🔍 Root Cause: Seal wear or bearing failure.
🛠️ Fix: Replace water pump with OEM part.
Steering vibration at high speeds
🔍 Root Cause: Tire imbalance or worn bushings.
🛠️ Fix: Balance tires and replace lower control arm bushings.
Premature brake rotor warping
🔍 Root Cause: Heat buildup under heavy braking.
🛠️ Fix: Replace rotors with high-quality ventilated versions.
Cooling fan relay failure
🔍 Root Cause: Electrical overheat or relay wear.
🛠️ Fix: Replace cooling fan relay and inspect fuses.
Drivetrain clunk during shifts
🔍 Root Cause: Differential bushing wear.
🛠️ Fix: Replace rear differential mount bushings.
Suspension knocking
🔍 Root Cause: Worn sway bar links or strut mounts.
🛠️ Fix: Replace affected components.
Exhaust rattling noise
🔍 Root Cause: Loose heat shields.
🛠️ Fix: Tighten or replace heat shields.
Engine overheating
🔍 Root Cause: Faulty thermostat or radiator blockage.
🛠️ Fix: Replace thermostat and flush cooling system.

💡 Top 10 Common Electrical Issues (Root Cause & Fix)

Dashboard warning lights on
🔍 Root Cause: Loose ground or ECM fault.
🛠️ Fix: Check grounding points and scan for codes.
Airbag light illuminated
🔍 Root Cause: Seat occupancy sensor failure.
🛠️ Fix: Replace or recalibrate seat sensor.
Power window malfunction
🔍 Root Cause: Worn regulator motor.
🛠️ Fix: Replace motor and lubricate tracks.
Bluetooth and audio connectivity issues
🔍 Root Cause: Outdated multimedia firmware.
🛠️ Fix: Update infotainment software.
Headlight condensation
🔍 Root Cause: Seal deterioration.
🛠️ Fix: Replace or reseal headlight assembly.
Alternator failure
🔍 Root Cause: Overheating from engine bay heat.
🛠️ Fix: Replace alternator and check serpentine belt.
AC not blowing cold air
🔍 Root Cause: Failed AC compressor clutch.
🛠️ Fix: Replace compressor clutch or full assembly.
Central locking issues
🔍 Root Cause: Door actuator failure.
🛠️ Fix: Replace affected door actuator.
Instrument cluster failure
🔍 Root Cause: Circuit board solder cracks.
🛠️ Fix: Re-solder joints or replace cluster.
Battery drain overnight
🔍 Root Cause: Faulty trunk light switch.
🛠️ Fix: Replace trunk switch or bulb.

📊 Pros & Cons Comparison with Competitors

Model	Pros 👍	Cons 👎
Lexus IS250 / IS300	Excellent reliability; Luxurious interior; Smooth V6 engine	Limited rear space; Modest performance; High maintenance costs
BMW 3 Series (E90)	Sporty handling; Premium feel	Costly repairs; Reliability concerns
Mercedes C-Class (W204)	Luxury ride; Strong engines	Complex electronics; High service cost
Infiniti G35 / G37	Strong V6; Sporty drive	Crude ride; High fuel consumption
Audi A4 (B7)	Refined interior; AWD available	Expensive maintenance; Oil consumption
Acura TSX	Excellent reliability; Value for money	Less power; Basic features

🛠️ Maintenance Schedule

Interval ⏱️	Maintenance Task 🔧
Every 5,000 miles / 6 months	Oil & filter change
Every 15,000 miles	Inspect brakes, tires, belts, and hoses
Every 30,000 miles	Replace air filter, cabin filter, brake fluid
Every 60,000 miles	Replace spark plugs and transmission fluid
Every 90,000 miles	Replace coolant, inspect timing chain
Every 100,000 miles	Inspect suspension and differential fluids

⚠️ Recalls, Advisories & Safety Alerts

Takata airbag recall: Risk of rupture during deployment.
Fuel delivery pipe leak: Cracks may cause fuel odor or leak.
Steering column sensor fault: May cause VSC light illumination.
ECM software update: Idle control malfunction requiring reflash.
Seatbelt pretensioner recall: Improper deployment during collision.
Brake booster failure: Internal diaphragm leak reduces brake assist.
Water leak in trunk: Seal deterioration allows moisture ingress.
HVAC servo motor fault: Failure causes improper airflow control.
Power steering hose recall: Possible fluid leak near exhaust system.
Front airbag sensor malfunction: Incorrect impact detection signal.

🧾 Diagnostic Trouble Codes (DTC) Tables

💻 Engine Control Module (ECM)

Code	Description
P0171	System Too Lean
P0300	Random Misfire Detected
P0420	Catalyst Efficiency Below Threshold
P0430	Catalyst System Bank 2 Efficiency
P0505	Idle Air Control System
P1128	Fuel Trim Lean
P2195	O2 Sensor Signal Stuck Lean
P1604	Startability Malfunction
P2238	O2 Sensor Circuit Low Voltage
P2757	Torque Converter Clutch Pressure Control

⚙️ Transmission Control Module (TCM)

Code	Description
P0700	Transmission Control System Malfunction
P0750	Shift Solenoid A Malfunction
P0755	Shift Solenoid B Malfunction
P0765	Shift Solenoid D Malfunction
P0793	Intermediate Shaft Speed Sensor
P2714	Pressure Control Solenoid D Stuck Off
P2750	Torque Converter Clutch Solenoid
P2767	Input/Turbine Speed Sensor Circuit
P2810	Pressure Control Solenoid H Performance
P2820	Pressure Control Solenoid J Electrical

🛑 ABS / ESC System

Code	Description
C1201	Engine Control System Fault
C1241	Low Battery Positive Voltage
C1310	ABS Malfunction Signal to ECM
C1336	Yaw Rate Sensor Calibration
C1421	Stop Light Switch Circuit
C1203	Communication Error with ECM
C1223	ABS Control System Malfunction
C1252	Brake Booster Pump Motor Relay
C1391	Accumulator Pressure Leakage
C1451	Brake Fluid Pressure Sensor Fault

🎈 SRS Airbag System

Code	Description
B0100	Driver Airbag Squib Malfunction
B0105	Passenger Airbag Circuit Open
B0115	Side Airbag Squib Malfunction
B0130	Airbag Sensor Malfunction
B0140	Front Airbag Sensor Fault
B0155	Seatbelt Pretensioner Fault
B1181	Occupant Classification Sensor Fault
B1200	Airbag ECU Internal Fault
B1310	Crash Sensor Power Supply Circuit
B1400	Airbag Warning Lamp Circuit

📡 Body Control / CAN Communication

Code	Description
U0100	Lost Communication with ECM
U0121	Lost Communication with ABS Module
U0140	Lost Communication with BCM
U0155	Lost Communication with Instrument Cluster
U1110	CAN Bus Off
U113E	Lost Communication with Park Assist Module
U1123	Lost Communication with TPMS
U1103	Invalid Data from ECM
U1146	Lost Communication with HVAC Control
U1180	Lost Communication with Lighting Control

✅ Final Verdict & Conclusion

The 2007–2009 Lexus IS250 and IS300 combine precision build quality with excellent reliability and timeless design. While not the sportiest in its segment, its comfort, refinement, and bulletproof mechanicals make it a standout long-term ownership choice. Proper maintenance ensures years of dependable service, securing its place as one of the most durable compact luxury sedans of its era.

2009 lexus is 250 service manual – Dardoor