Warning Signs Your Coolant Reservoir is Failing
- Low coolant level: You need to add coolant more often than usual.
- Overheating engine: The engine temperature gauge goes into the red zone.
- Coolant leaks: You see coolant pooling under your car. Coolant is often green, orange, or pink.
- Sweet smell: You smell a sweet odor coming from the engine area. This is the smell of coolant.
- Cracked or discolored reservoir: You see visible damage to the coolant reservoir itself.
How to Test if This Part is the Problem
- Check the coolant level: Make sure the coolant level is at the "full" mark on the reservoir when the engine is cool.
- Inspect the reservoir: Look for cracks, leaks, or discoloration.
- Pressure test the cooling system: A mechanic can use a special tool to pressurize the system and check for leaks.
- Check the radiator cap: A faulty radiator cap can cause coolant loss and overheating.
- Look for external leaks: Check the hoses, water pump, and radiator for leaks.
Common Failure Causes for This Part
- Age and wear: Plastic parts can become brittle and crack over time.
- Overheating: Extreme heat can damage the reservoir.
- Pressure: Constant pressure changes can weaken the plastic.
- Improper coolant: Using the wrong type of coolant can corrode the reservoir.
- Accidents: Impact damage can crack the reservoir.
