Symptoms
- Puddle of green, orange, pink, or yellow fluid under the front bumper area
- Sweet smell near the puddle
- Coolant reservoir level lower than expected
- Possible dried, crusty residue nearby from a slower ongoing leak
Likely causes
- CommonLeaking radiatorThe radiator sits at the very front of most vehicles and is a common source of a front-specific puddle.
- CommonLoose or cracked lower radiator hoseThis hose is low and forward, and a leak there drips almost straight down near the front.
- PossibleLeaking radiator cap or overflow tubeCoolant pushed out during normal operation can drip from the overflow tube near the front.
- Less commonAC condenser mistaken for radiator (condensation, not a leak)Clear water dripping from the AC system is normal condensation and not a coolant leak; color and location help tell them apart.
What to do
- Confirm the fluid color; green, orange, pink, or yellow with a sweet smell points to coolant rather than clear AC condensation.
- Check the radiator and lower hose specifically, since they're the most common sources of a leak in this exact location.
- Check the coolant reservoir level, topping off temporarily with the correct coolant type if needed.
- Avoid extended driving if the leak seems to be dripping steadily rather than just residual from a top-off.
- Have a mechanic pressure-test the system to confirm the exact source if it's not obvious from a visual check.
- Get the specific radiator or hose repaired or replaced rather than just topping off coolant.
- Recheck for leaks after the repair with a clean surface underneath to confirm it's resolved.
Tools and parts
- Cardboard or leak mat
- Flashlight
Coolant (correct type for vehicle)Search: “coolant type for [make model year]”
When to call a pro
See a mechanic to pressure-test and confirm the source if it's not obviously the radiator or a hose from a visual check.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.