AI4Car quick readA short, original guide from the AI4Car knowledge library.
Do not touch hot components or open the system while pressurized. Note where the smell appears and arrange a cooling-system pressure test if the level keeps falling.
Quick educational note
For information, not a diagnosis or repair instruction. Vehicle-specific checks are still required. Consult the manufacturer's guidance and a qualified technician.
How to use this information
This article explains general principles and does not establish what is wrong with your vehicle. Read the content limitations.