If the temperature gauge climbs into the red or you see steam, stop driving as soon as it is safe. Driving an overheating engine can cause warpage, head gasket failure, and major damage.
Short answer
Coolant leaks show up as puddles of green, orange, pink, or blue fluid under the vehicle, a sweet smell, low coolant warnings, climbing temperature gauges, and white steam from the exhaust. Stop driving and schedule diagnostics before the engine overheats.
Common leak sources
Upper and lower radiator hoses and clamps.
Water pump weep holes and gasket surfaces.
Radiator core cracks or end-tank seals.
Plastic expansion tanks (especially on European vehicles).
Head gasket leaks, which may not show external fluid.
When to stop driving
If the temperature gauge climbs into the red zone, pull over safely and shut the engine off.
If you smell coolant or see steam, do not open the radiator cap while the engine is hot.
Call AAB Service or arrange a tow.
San Antonio auto repair
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