ACURA Panel Switch Engine Start BUTTON35881-TY3-A21 D057

( Manufacturer Part Number: 35881-TY3-A21 ), ( Part Type: Switch Start Panel Engine Stop ), ( Part Category: Fob ), ( Storage Location: 2c-x09 ), ( Fitment Type: Direct Replacement ), ( Genuine Oem: Yes ), ( Part Source: Genuine Oem ), ( Name: Switch ), ( Ipn: 35881 Ty3 A21 ), ( Oe/oem Part Number: 35881-ty3-a21, 72147-tx6-c61 ), ( Manufacturer Warranty: 90 Day )

Review ACURA Panel Switch Engine Start Stop Button35881-ty3-a21 Oe fits RLX 2018–2020

The **Acura 35881-TY3-A21 (D057) 2018 2020 RLX Engine Start Button Panel Switch** is a precision-engineered, high-quality replacement component designed to seamlessly integrate into the instrument cluster and center console of Acura TLX and MDX models from the 2018 through 2020 model years. Crafted to exact specifications, this switch serves as the intuitive interface between the driver and the vehicle s advanced start-stop system, allowing for effortless ignition activation, engine start, and vehicle shutdown with a simple press of a button. Constructed from durable, corrosion-resistant materials, the switch is built to withstand the rigors of daily use while maintaining a sleek, premium appearance that complements the vehicle s sophisticated interior design. The D057 designation ensures compatibility with the correct wiring harness and mounting configuration, guaranteeing a secure fit and reliable functionality. Whether replacing a worn-out or malfunctioning original component or upgrading for enhanced performance and convenience, this switch delivers a smooth, responsive operation that aligns with Acura s commitment to cutting-edge technology and driver-centric innovation. Ideal for both professional automotive technicians and DIY enthusiasts, it provides a hassle-free solution for restoring or enhancing the vehicle s starting system with minimal effort.

### **Pros and Cons of buying a Acura RLX Panel Switch/Engine Start Button (Part Number: 35881-TY3-A21, D057, 2018-2020 Models)**

1. **Direct Fitment** This part is specifically designed for 2018-2020 Acura RLX models, ensuring compatibility without modifications. It includes the panel switch assembly and the engine start button, which are critical components for the vehicle s infotainment and ignition system.

2. **OEM Quality** As an original equipment manufacturer (OEM) part, it meets Acura s strict standards for durability, functionality, and integration with the vehicle s electronics. This reduces the risk of compatibility issues or premature failure compared to aftermarket knockoffs.

3. **Convenience and Functionality** The panel switch and start button are essential for operating the vehicle s climate control, media system, and engine start function. A faulty or missing part can render these features inoperable, so replacing it restores full functionality.

4. **Aesthetic Consistency** The part is designed to match the RLX s interior styling, ensuring a seamless fit with the dashboard and control panel. This avoids the visual mismatch that can occur with non-OEM replacements.

5. **Warranty Coverage** Purchasing from an authorized dealer or a reputable supplier may include a warranty, providing peace of mind against defects or premature wear.

6. **Prevents Further Damage** Ignoring a faulty panel switch or start button can lead to more extensive electrical or software issues, particularly if the problem affects the vehicle s connectivity or keyless entry system. Replacing it proactively can prevent costly repairs down the line.

7. **Ease of Installation** While installation may require some technical skill (especially if dealing with wiring or electronic modules), the part is designed to be straightforward to replace, assuming the necessary tools and instructions are available.

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1. **High Cost** OEM parts are typically more expensive than aftermarket alternatives. The price of this specific part may range from $150 to $300 or more, depending on the supplier and region. This can be a significant investment, especially if the vehicle is not under warranty.

2. **Potential for Counterfeit Parts** If purchasing from an unauthorized or third-party seller, there is a risk of receiving a counterfeit or low-quality replica. These parts may fail prematurely or not function correctly, leading to additional costs and frustration.

3. **Labor Costs** Even if the part itself is straightforward to install, labor costs at a dealership or mechanic can add to the total expense. DIY installation is possible but may require patience and familiarity with automotive electronics.

4. **Electrical or Software Issues** In some cases, replacing a panel switch or start button may trigger error codes or require a reset of the vehicle s infotainment or keyless system. This could involve additional diagnostic work or a visit to a dealership for programming.

5. **Limited Availability** OEM parts may not always be in stock at local dealerships or online retailers, potentially causing delays in obtaining the replacement. Some suppliers may require advance ordering or higher minimum purchase quantities.

6. **Potential for Overkill** If the issue is isolated to a single component (e.g., a faulty wiring harness or connector), replacing the entire panel switch assembly may be more expensive than necessary. A thorough diagnosis by a professional could identify a cheaper fix.

7. **Compatibility with Modifications** If the vehicle has aftermarket modifications (e.g., custom infotainment systems, keyless entry upgrades, or wiring changes), the OEM panel switch may not integrate perfectly. This could require additional adjustments or a different part entirely.

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The **Acura RLX panel switch/engine start button (35881-TY3-A21, D057)** is a high-quality, direct-fit OEM part that ensures reliability and compatibility for 2018-2020 models. It is ideal for owners who prioritize durability, functionality, and aesthetic consistency without compromising on quality. However, the higher cost and potential for counterfeit parts or additional diagnostic work must be considered.

For most owners experiencing issues with their panel switch or start button, this OEM part is the best long-term solution, provided it is sourced from a trusted dealer or supplier. If budget is a concern, a thorough diagnosis to rule out simpler fixes (e.g., connector issues or software glitches) may be worthwhile before committing to the replacement.

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1. **Verify the Issue** Before purchasing, confirm that the problem is indeed with the panel switch or start button (not wiring, connectors, or software). A dealership or automotive electrician can diagnose the issue accurately.

2. **Purchase from a Trusted Source** Buy the part from an **authorized Acura dealer**, a reputable online retailer (e.g., RockAuto, AutoZone, or partsdirect.com), or a supplier with positive reviews. Avoid unknown sellers to avoid counterfeit parts.

3. **Consider DIY Installation** If comfortable with basic automotive work, attempt the installation yourself to save on labor costs. Acura s service manuals and online tutorials can guide the process. If unsure, consult a professional.

4. **Check for Warranty Coverage** If the vehicle is still under warranty, contact Acura to see if the part or labor is covered. Some issues may qualify for free replacement.

5. **Explore Aftermarket Alternatives (If Budget is Tight)** While OEM is ideal, high-quality aftermarket parts (e.g., from Dorman, ACDelco, or Mopar) may offer a cost-effective alternative. Ensure the part is specifically rated for Acura RLX compatibility.

6. **Reset the System After Installation** After replacing the part, the vehicle s infotainment or keyless system may need to be reset. Follow Acura s guidelines or consult a technician to avoid error codes.

**Final Verdict:** For most RLX owners, the **35881-TY3-A21 OEM panel switch/start button is the best choice** due to its reliability and seamless integration. However, weigh the cost against the severity of the issue and explore all options to ensure the most cost-effective solution. If the part is necessary, proceed with a trusted purchase and installation method to avoid complications.

Details:

: . MPN: 35881-TY3-A21. Warranty: 90 Day. May have wear and tear.

Part Source:: Genuine OEM. Part Brand: Factory, OEM, Dealer. ITEM TITLE: 2018 2020 Acura RLX Panel Switch Engine Start Stop Button35881-TY3-A21, D057, OE Brand. Condition: Used.

Notes: Used item, refer to images for item condition. Manufacturer Part Number: 35881TY3A21.

part #: 35881ty3a21 prices

• $65.17-$111.53

specifications cycleswitches:

• for models: Rlx
• for makes: Acura
• for years: 2018-2020
• mpn: 35881-ty3-a21
• part type: Switch Start Panel Engine Stop
• part category: Fob
• storage location: 2c-x09
• fitment type: Direct Replacement
• genuine oem: Yes
• part source: Genuine Oem
• name: Switch
• ipn: 35881 Ty3 A21
• oe/oem part number: 35881-ty3-a21, 72147-tx6-c61
• manufacturer warranty: 90 Day

offer cycleswitches:

• availability: In Stock
• started: June 4, 2026
• quantity: 1
• sold: 0
• best offers: True
• options: Ship-to-home

returns cycleswitches:

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

general cycleswitches:

• Electrical Ignition Components > Electrical Ignition Sensors Switches > Ignition Key Switches
• condition: Used

seller cycleswitches:

• # reviews: 29864
• rating: 99.7%
• city: Rancho Cordova, California

payments cycleswitches:

• other
• credit card: Discover
• wallet: Paypal

shipping cycleswitches:

• type: Fixed
• service: USPS First Class, USPS Priority Mail
• cost: $0.00
• transit: 2-6 Days
• carrier: USPS
• class: Standard, Expedited