TOYOTA Mirai Interior Roof Overhead Dome Light Lamp Switch 1D111-109G

( Manufacturer Part Number: 1D111109G ), ( Type: Interior Lighting ), ( Reference Oe/oem Number: 1d111-109g )

Review TOYOTA Mirai Interior Roof Overhead Dome Light Lamp Switch fits 2016–2020

The **Toyota Mirai (1D111109G) 2016 2020 Interior Roof Overhead Dome Light Lamp Switch Assembly (Part #1D11-109G)** is a precision-engineered component designed to enhance both the functionality and aesthetic appeal of Toyota s pioneering hydrogen fuel cell vehicle. This high-quality, OEM-specification assembly integrates seamlessly into the Mirai s sleek, minimalist interior, ensuring optimal visibility and user convenience while maintaining the vehicle s signature modern elegance. Crafted from durable, corrosion-resistant materials, the dome light lamp switch is built to withstand the demands of daily use, offering reliable performance even in varying environmental conditions. The assembly features a robust, ergonomically designed switch mechanism that allows for effortless control of the overhead dome light, providing drivers and passengers with adjustable illumination for enhanced safety and comfort during nighttime or low-light conditions. The integrated light fixture itself is engineered to deliver bright, even illumination, reducing glare and improving visibility throughout the cabin. Whether in use for practical purposes like locating items in the glove compartment or adding a subtle ambient glow during evening drives, this component ensures a seamless blend of utility and sophistication. Ideal for both original equipment replacement and customization projects, the **1D11-109G** adheres to Toyota s stringent quality standards, guaranteeing a perfect fit and long-lasting durability. Its streamlined design complements the Mirai s futuristic aesthetic, reinforcing the vehicle s reputation for innovation and cutting-edge technology.

### Pros and Cons of buying a Toyota Mirai (2016-2020) Interior Roof Overhead Dome Light Lamp Switch (Part #1D111-109G)

1. **Compatibility and Fitment** This part is specifically designed for the Toyota Mirai models from 2016 to 2020, ensuring a perfect fit without modifications. It includes the dome light lamp, switch, and wiring harness, which simplifies installation.

2. **OEM Quality** As an original equipment manufacturer (OEM) part, it meets Toyota s strict standards for durability, reliability, and performance. This reduces the risk of premature failure compared to aftermarket alternatives that may not be as well-tested.

3. **Full Assembly** Unlike individual dome light bulbs or switches sold separately, this part comes as a complete unit, including the lamp, switch, and wiring. This eliminates the need to source multiple components and ensures all parts are compatible.

4. **Reliability** The Mirai is a hydrogen fuel cell vehicle, and Toyota maintains high-quality standards for its components. An OEM dome light assembly is less likely to cause electrical issues or fail early, which is important for maintaining the vehicle s overall functionality.

5. **Warranty Coverage** If purchased directly from Toyota or an authorized dealer, this part may come with a warranty, providing peace of mind in case of defects. Aftermarket parts often lack such guarantees.

6. **Aesthetic Consistency** Using an OEM part ensures the dome light and switch match the original design of the Mirai s interior, maintaining the vehicle s premium appearance.

7. **Ease of Installation** Since it is a direct replacement, installation typically requires minimal effort, especially if the original part was failing. The wiring and mounting points are designed to align perfectly with the vehicle s structure.

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1. **Cost** OEM parts are generally more expensive than aftermarket alternatives. The price of this assembly may be significantly higher than buying a generic dome light bulb or switch separately. For example, an aftermarket dome light bulb might cost $10 $20, while this complete assembly could range from $50 to $100 or more, depending on the seller.

2. **Limited Availability** OEM parts for hydrogen vehicles like the Mirai may not be as widely stocked as parts for more common gasoline or hybrid vehicles. This could result in longer lead times or difficulty finding the part, especially if purchasing from a non-authorized source.

3. **Potential Overkill for Minor Issues** If the problem is isolated to just the dome light bulb (e.g., a burned-out filament) rather than the entire assembly, buying this part may be unnecessary. In such cases, replacing just the bulb could be a more cost-effective solution.

4. **Resale Value Impact** If the Mirai is being prepared for resale, some buyers may prefer to use OEM parts to maintain the vehicle s pristine condition. However, others might not prioritize this, especially if the dome light is a minor cosmetic issue.

5. **Sourcing Challenges** Purchasing from unauthorized sellers (e.g., eBay, Facebook Marketplace, or third-party online retailers) carries risks such as counterfeit parts, incorrect part numbers, or poor-quality replicas. Always verify the seller s reputation and authenticity.

6. **Installation Complexity (for Non-Mechanics)** While the installation is straightforward for those with basic mechanical knowledge, the Mirai s unique electrical system or hydrogen-specific components might require careful handling. Improper installation could lead to electrical issues or void warranties.

7. **Environmental and Ethical Considerations** Since the Mirai is a hydrogen vehicle, some buyers may prefer to support sustainable or recycled part options. OEM parts, while reliable, are not always eco-friendly in their production or disposal.

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Buying the Toyota Mirai (2016 2020) interior roof overhead dome light lamp switch assembly (1D111-109G) is a practical choice if you need a **complete, reliable, and high-quality replacement** for a failing dome light system. The OEM part ensures compatibility, durability, and ease of installation, making it ideal for owners who prioritize long-term reliability and vehicle integrity. However, the higher cost and potential overkill for minor issues (like a burned-out bulb) may make it less appealing for budget-conscious buyers or those dealing with isolated problems.

For most cases where the dome light assembly is malfunctioning or the switch is failing, this part is the **best long-term solution**. If the issue is purely cosmetic or limited to the bulb, however, an aftermarket bulb or switch could be a more economical alternative.

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1. **Verify the Issue** Before purchasing, confirm whether the problem is with the entire assembly (lamp switch) or just a specific component (e.g., the bulb). If only the bulb is out, consider replacing it separately to save money.

2. **Purchase from an Authorized Source** Buy the part from **Toyota s official website, an authorized dealer, or a reputable online retailer specializing in OEM parts** (e.g., RockAuto, Amazon Toyota parts section, or eBay with verified sellers). Avoid unknown sellers to prevent receiving counterfeit or incompatible parts.

3. **Check for Aftermarket Alternatives** If the budget is a concern, research aftermarket dome light assemblies or switches that are compatible with the Mirai. Brands like **Autolite, Bulbrite, or generic OEM replacements** may offer similar performance at a lower cost.

4. **DIY Installation** If comfortable with basic automotive work, install the part yourself to save labor costs. If not, consult a Toyota-certified technician to ensure proper installation, especially given the Mirai s unique systems.

5. **Consider Warranty or Extended Coverage** If the part comes with a warranty, take advantage of it. If not, explore extended warranty options through the seller or a service provider.

6. **Document the Purchase** Keep receipts and proof of purchase in case of warranty claims or return issues.

**Final Verdict:** For a **complete, hassle-free replacement** of the Mirai s dome light assembly, the 1D111-109G OEM part is the **best choice**. However, weigh the cost against the severity of the issue to determine if it s the most cost-effective solution for your needs.

Details:

DL2 The product is a 2016 2020 Toyota Mirai Interior Roof Overhead Dome Light Lamp Switch with the manufacturer part number 1D111-109G. This switch is a genuine Toyota part, ensuring quality and compatibility with the vehicle. It is designed specifically for the Toyota Mirai model and provides a convenient way to control interior lighting.

part #: 1d111109g prices

• $21.25-$44.99

specifications interiorlightsot:

• for makes: Toyota
• for years: 2016-2020
• mpn: 1d111109g
• type: Interior Lighting
• reference oe/oem number: 1d111-109g

seller interiorlightsot:

• city: Riverside, California
• rating: 99.8%
• # reviews: 458

payments interiorlightsot:

• wallet: Apple-pay
• credit card: Diners-club
• other

general interiorlightsot:

• condition: Used
• Car Truck Parts Accessories > Lighting Lamps > Interior Light Assemblies

shipping interiorlightsot:

• transit: 4-9 Days
• carrier: USPS
• type: Calculated
• service: USPS Ground Advantage
• cost: $11.62
• class: Standard

offer interiorlightsot:

• sold: 0
• started: March 15, 2026
• availability: In Stock
• quantity: 1
• best offers: True
• options: Ship-to-home

returns interiorlightsot:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

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