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CARFACTBOOK / DIAGNOSTIC REFERENCE

Your car. Your symptoms. The next safe check.

Select your vehicle, explore its systems, and choose what you are seeing. Follow existing evidence-based checks, understand when to stop safely, and prepare a useful mechanic handoff—without guessing which part failed.

01 / Your diagnostic vehicle

Select your exact car

Start with the make, model and chassis code. The system list below then stays connected to that selection.

Choose an exact vehicle
03 / Choose what you observed

Cooling

Separate harmless condensate from coolant loss and overheating.

04 / Next safe action

Coolant leak

This issue uses existing safety or repair research. The guide does not establish the actual cause in your car.

Open related repair research →
Immediate owner decisions

Urgent symptoms: fluid leaks, tire problems and warnings

A tire blowout, low oil pressure, slipping transmission or overheating can require an immediate safe stop. Choose the relevant owner-safety research before starting vehicle-specific diagnosis.

Browse or contribute reviewed problem & repair evidence →