Describe what you see, hear, or feel.
Choose the details you know. IAR won’t guess which parts or procedures fit.
Saved vehicle details help tailor results; they don’t confirm which parts or repairs fit.
NHTSA model suggestions begin with 1996; older vehicles can be entered manually. Saving records what you select. IAR does not infer engine, trim, transmission, drivetrain, or repair applicability from a model name. Published facts show their own sources and applicability.
Sounds, warning lights, and changes
Use evidence, not guesswork
Observe, measure, isolate
Fix the fault, then confirm it
“Diagnose first. Replace parts second.”
Starting, ignition, fuel, air and mechanical health
Misfire · Rough idle · Loss of power04Power distribution, wiring, modules, sensors and communication
Intermittent faults · No communication · Blown fuse06Hydraulics, friction, ABS and pedal concerns
Vibration · Grinding · Soft pedal08Driver input, assist, geometry and wheel direction
Pulling · Vibration · Heavy steering09Temperature control, circulation, airflow and sealing
Overheating · Leaks · No cabin heat11Cabin heating, ventilation, air conditioning and air distribution
A/C warm · Weak airflow · OdorChoose the symptom that best matches what changed.
Browse every symptomLook up a generic trouble code, understand what the monitor detected, and follow a test-first path.
The starter turns the engine, but combustion never begins. Test fuel, ignition, compression, timing, and security in a logical order.
Open diagnostic guideVehicle-specific information is available where verified.
Verification statusEvery guide identifies whether it is general knowledge, vehicle-specific, or needs confirmation.
Source-ready architectureVehicle claims can carry source, publication date, retrieval date, and verification status.
No invented specificationsTorque, capacities, pressures, intervals, and programming steps require exact service information.
Repairs can involve heat, pressure, moving parts, electricity, fuel, airbags, and high voltage. Procedures vary by vehicle. Use the correct manufacturer service information, and get qualified help when work exceeds your training or equipment. High-voltage vehicle safety