Blend Door Flap — Renault Duster

Category: AC | Severity: high | Cost: ₹3,000–₹10,000

What is Blend Door Flap?

Controls mix of hot and cold air inside HVAC system.

How Blend Door Flap Works

Opens/closes to regulate temperature by mixing air streams.

Why is Blend Door Flap Important?

Maintains desired cabin temperature.

Common Problems

Stuck flap
Broken hinge

Symptoms

Hot air instead of cold
Temperature mismatch

Causes of Failure

Mechanical wear
Actuator failure

Impact on Car Performance

Incorrect cabin temperature.

DIY Fix Guide — Step by Step

Change temperature settings
Check airflow

Maintenance Tips

Avoid forcing controls

Replacement Cost in India

Estimated range: ₹3,000 – ₹10,000

Where to Buy Online

When to Replace Blend Door Flap

When temperature control fails.