Oil or Transmission Fluid Leak
A brown/black fluid puddle under a 2020 Toyota RAV4 typically indicates an oil leak (engine oil) or possibly transmission fluid. This can lead to low fluid levels, engine or transmission damage if not addressed promptly.
Diagnosis Details
Possible Causes
Oil pan gasket or drain plug leak
Valve cover gasket leak
Transmission fluid leak (if fluid is reddish-brown and smells burnt)
Related OBD-II Codes
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What You Should Do
Check fluid levels (engine oil and transmission fluid) immediately.
Inspect the puddle color and smell: engine oil is brown/black and slippery; transmission fluid is reddish-brown and may have a burnt odor.
Clean the area and monitor for source.
If leak is significant, do not drive; have the vehicle towed to a mechanic for diagnosis and repair.
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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.