2009–2010 Toyota Corolla: Coolant leak or noise from the water pump
Likely causes, ranked
- Water pump seal leak or bearing noise (pump replaced per bulletin)Shop
Real-owner fix counts will appear here as reports come in.
DIY or shop: See DIY or shop section
Parts to check
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Symptom: Coolant drips or crust near the pump, or a whine or grind from the pump area.
Likely causes
- Water pump. Toyota's bulletin calls for pump replacement. A later Toyota guide notes minor seal seepage that evaporates can be normal.
DIY or shop?
Shop or DIY.
Useful steps
- Confirm an active leak and a low coolant level.
- Replace it with the updated pump.
Vehicle focus: 2009–2010 Toyota Corolla.
Safety / mechanic note
Overheating can damage the engine.
Recalls & service bulletins
Technical service bulletins
- T-SB-0362-09 Toyota bulletin for coolant leak and/or abnormal noise from the water pump on 2009–2010 2ZR-FE Corollas: replace the pump. Details
NHTSA complaints: 31 keyword-matched complaints (of 2,733 unique complaints filed under NHTSA model names COROLLA, 2009–2010; NHTSA complaints API by model year, queried 2026-10-15).
Always check your VIN for open recalls at nhtsa.gov/recalls.
Sources
What actually fixed it?
Had this problem? Tell other owners what the real fix was. Reports are counted above; we never show made-up numbers.