Specifications & Compatibility

Upgrade your Volkswagen Polo, Vento, or Ameo with a reliable, factory-style automatic headlight switch engineered for seamless, plug-and-play installation. The 1C0941531 / 3BD941531 / 3BD941531A automatic headlight switch is the preferred upgrade for owners who want true auto headlight control without wiring modifications or complicated retrofitting. It replaces the manual headlight switch used in older Volkswagen models and introduces a modern, intelligent lighting system with both internal sensor and external sensor support.

Designed to fit perfectly into the OE slot, this switch matches the original factory layout and supports advanced functions including Coming Home / Leaving Home, fog light operation, and full automatic light activation based on ambient brightness. Whether you drive through tunnels, dimly lit roads, basements, or early-morning low-visibility areas, the automatic headlight switch ensures the lights turn ON and OFF precisely when needed.

OEM Compatibility and High Reliability

The switch supports 14-pin and 17-pin connectors, making it suitable for multiple Volkswagen models without additional adapters. Volkswagen owners often struggle with finding the correct variant of the automatic light switch for Polo, Vento, or Ameo. This product eliminates confusion by providing a direct replacement, offering compatibility with 1C0941531, 3BD941531, and 3BD941531A versions, ensuring perfect fitment for all supported models.

Manufactured using high-quality ABS materials and OE-grade internal components, this switch delivers durability, correct click feedback, and consistent sensor accuracy. For users seeking a Volkswagen auto headlight upgrade that mirrors factory performance, this is one of the most reliable plug-and-play solutions in the market.

Internal vs. External Sensor Versions

The product is available in two sensor configurations:

1. Internal Sensor Type

Contains a built-in ambient light sensor that automatically detects changes in light and activates the headlights. Recommended for users who want a completely clean installation without routing an external sensor.

2. External Sensor Type

A good choice for cars with tinted glass. Comes with a small sensor wire for flexible mounting on the dashboard. This option is ideal if you prefer external placement for quicker light detection or customization.

Both versions support full automatic headlight functionality and advanced features without requiring coding in most Polo, Vento, and Ameo models.

User-Controlled Configuration Switch

A dedicated configuration button is provided at the back of the unit. This allows you to customise light behaviour—enable or disable Coming Home / Leaving Home lights, adjust fog lamp logic, and fine-tune automatic headlight sensitivity as per driving preferences.

Installation Guide (Plug & Play)

1. Turn your existing headlight switch to 0 (OFF).

2. Push it inward and rotate clockwise to release the lock.

3. Pull out the old switch and disconnect the wiring connector.

4. Align the new automatic headlight switch and connect the same wiring harness.

5. Insert into the dashboard slot until it clicks firmly into place.

6. Test auto mode, fog lights, and CH/LH functions.

No wiring cuts, no splicing, no modifications.

Compatibility

Suitable for the following Volkswagen models:

• Volkswagen Polo (all 14-pin & 17-pin variants)

• Volkswagen Vento

• Volkswagen Ameo

For customers searching for automatic headlight switch upgrades for other models like Jetta, Passat, Tiguan, or Skoda Rapid, we also have alternate versions available.

Why Upgrade?

Volkswagen owners frequently look for a simple, reliable way to enable auto headlights, eliminate manual switching, and enhance nighttime safety. This 1C0941531 / 3BD941531 / 3BD941531A switch provides a premium, factory-like experience—improving comfort, visibility, and driving confidence, while maintaining complete plug-and-play simplicity.

Upgrade your Volkswagen today for a smoother, safer, and more premium-feeling drive.