Rain Sensor — Maruti Suzuki Swift
Category: Interior | Severity: medium | Cost: ₹4,000–₹12,000
What is Rain Sensor?
Automatically detects rain on the windshield and activates wipers without driver intervention.
How Rain Sensor Works
Uses infrared light reflection on the windshield. When rain droplets disturb the reflection, the sensor signals the wiper system to activate.
Why is Rain Sensor Important?
Improves driving safety and convenience during sudden rain by ensuring clear visibility without manual input.
Common Problems
- Sensor malfunction
- Delayed wiper response
- Over-sensitive activation
Symptoms
- Wipers not activating during rain
- Wipers running without rain
- Irregular wiping speed
Causes of Failure
- Dirty windshield near sensor
- Sensor misalignment
- Electrical fault
- Damaged windshield area
Impact on Car Performance
Reduced visibility in rain and driver inconvenience.
DIY Fix Guide — Step by Step
- Clean windshield near sensor area
- Restart vehicle electronics
- Check fuse related to wiper system
Maintenance Tips
- Keep windshield clean
- Avoid stickers near sensor
- Check wiper system regularly
Replacement Cost in India
Estimated range: ₹4,000 – ₹12,000
Where to Buy Online
When to Replace Rain Sensor
When sensor fails to detect rain accurately or stops functioning completely.