Sweet Smell from Vehicle - Possible Coolant Leak
A sweet smell while driving or after parking in a 2020 Ford Explorer typically indicates a coolant leak. The sweet odor is characteristic of ethylene glycol-based antifreeze. This could be due to a leaking radiator, hose, water pump, or heater core. If the leak is internal (heater core), you may also notice foggy windows or a sweet smell inside the cabin. Coolant leaks can lead to engine overheating and serious damage if not addressed promptly.
Diagnosis Details
Possible Causes
Coolant leak from radiator, hoses, or water pump
Heater core leak (sweet smell inside cabin)
Coolant reservoir cap or overflow tank issue
Related OBD-II Codes
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What You Should Do
Check coolant level in the reservoir and radiator (when cool).
Look for puddles under the vehicle, especially near the front.
Inspect hoses, radiator, and water pump for visible leaks.
If smell is inside the cabin, check for dampness on passenger floorboard (heater core leak).
Do not drive if coolant is low or engine temperature rises.
Have the cooling system pressure tested by a mechanic.
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
