Ambient Light Sensor — Maruti Suzuki Swift

Category: Electrical | Severity: low | Cost: ₹1,500–₹4,000

What is Ambient Light Sensor?

Detects surrounding light intensity to control automatic headlights.

How Ambient Light Sensor Works

Measures external light and signals BCM to turn headlights ON/OFF.

Why is Ambient Light Sensor Important?

Improves convenience and safety in changing light conditions.

Common Problems

Sensor failure
Incorrect readings

Symptoms

Headlights not auto switching

Causes of Failure

Dust accumulation
Sensor damage

Impact on Car Performance

Manual light control required.

DIY Fix Guide — Step by Step

Clean sensor area
Check wiring

Maintenance Tips

Keep dashboard sensor area clean

Replacement Cost in India

Estimated range: ₹1,500 – ₹4,000

Where to Buy Online

When to Replace Ambient Light Sensor

When auto headlight feature fails.