Coolant Expansion Tank — Renault Duster
Category: Cooling | Severity: medium | Cost: ₹1,500–₹4,000
What is Coolant Expansion Tank?
Stores excess coolant and maintains pressure balance.
How Coolant Expansion Tank Works
Expands coolant volume during heating and returns it when cooled.
Why is Coolant Expansion Tank Important?
Prevents coolant overflow and air entry.
Common Problems
- Cracks
- Cap failure
- Leakage
Symptoms
- Low coolant warning
- Visible leak
Causes of Failure
- Heat stress
- Plastic aging
Impact on Car Performance
Coolant loss and overheating risk.
DIY Fix Guide — Step by Step
- Check level
- Inspect cracks
- Replace tank
Maintenance Tips
- Maintain coolant level
- Inspect cap
Replacement Cost in India
Estimated range: ₹1,500 – ₹4,000
Where to Buy Online
When to Replace Coolant Expansion Tank
Replace if cracked or leaking.