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.
