MERCEDES A1729052301 Rear Seat Keyless Go Antenna Benz R172

( Manufacturer Part Number: A1729052301 ), ( Part Type: Seat Antenna ), ( Manufacturer Warranty: 1 Month )

Review MERCEDES benz Rear Seat Keyless Go Antenna Oem fits SLC SLK 2013–2020

The **Mercedes-Benz A1729052301 (13-20 R172 SLC SLK Rear Seat Keyless GO Antenna)** is a precision-engineered, high-performance antenna module designed exclusively for the rear seat of Mercedes-Benz SLK (R172) models produced between the years 2013 and 2020. This component is a critical element of the **Keyless GO** system, a seamless and convenient feature that allows drivers to unlock, start, and even drive their SLK without physically inserting a key into the ignition or door handles. The antenna operates as part of a sophisticated radio frequency (RF) network, ensuring reliable communication between the vehicle s electronic control units (ECUs) and the key fob, even when the driver is seated in the rear seat a scenario where traditional key proximity antennas in the front might fail to detect the signal.

Crafted to Mercedes-Benz s exacting standards, this antenna is built with **corrosion-resistant materials** and a **durable, weatherproof housing**, ensuring long-term reliability in all environmental conditions, from scorching summer heat to freezing winter temperatures. Its strategic placement in the rear seat area eliminates dead zones where the key fob signal might otherwise be obstructed by the driver s body or front-seat passengers, providing a consistent and uninterrupted connection to the vehicle s immobilizer and access control systems. The antenna s design incorporates **low-profile, flush-mounting technology**, seamlessly integrating into the rear seat structure without compromising comfort or aesthetics, while its **high-gain RF coil** maximizes signal strength for optimal performance.

Beyond its functional excellence, this antenna is engineered for **plug-and-play compatibility**, requiring minimal installation effort for certified technicians. It connects directly to the vehicle s existing wiring harness, adhering to the factory-standard pinout for the **Keyless GO system**, ensuring a hassle-free upgrade or replacement process. Whether replacing a faulty original component or upgrading an older SLK model to restore full keyless functionality, this antenna guarantees a **smooth, secure, and frustration-free** driving experience. For owners who demand the utmost in Mercedes-Benz convenience and technology, the **A1729052301** is an indispensable part of maintaining the SLK s signature blend of luxury, performance, and cutting-edge innovation.

**Pros and Cons of buying a Mercedes-Benz A1729052301 (13-20 R172 SLC/SLK Rear Seat Keyless Go Antenna)**

### **Pros**

1. **Enhanced Security and Convenience** The keyless entry system with a rear seat antenna allows for seamless access to the vehicle without needing to retrieve a physical key from the rear seat. This is particularly useful for drivers who frequently carry bags or luggage in the back, as they no longer have to stop to unlock the doors.

2. **Modern Technology Integration** This part is designed to work with Mercedes-Benz s Keyless Go system, which is part of the broader **MBUX (Mercedes-Benz User Experience)** platform. It aligns with the brand s focus on smart, connected driving experiences, reducing the need for manual key handling.

3. **Compatibility with Recent Models** The **R172** chassis (used in the **SLC and SLK** coupes from 2013 2020) is a well-supported platform, meaning this antenna is likely to be widely available and compatible with aftermarket upgrades or replacements if needed.

4. **Prevents Key Loss in Rear Seats** A common frustration with keyless systems is forgetting the key in the back seat, leading to locked cars. This antenna mitigates that issue by ensuring the system remains active even when the key is out of sight.

5. **Potential Resale Value** If you plan to sell or trade in your vehicle later, having all original or properly maintained keyless components may positively influence the resale value, as buyers often prefer fully functional smart features.

6. **Reduced Wear on Ignition** Since the key doesn t need to be inserted into the ignition as frequently, there s less mechanical stress on the ignition switch, potentially extending its lifespan.

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### **Cons**

1. **Potential for Malfunction or Failure** Like any electronic component, this antenna can fail over time due to wear, water damage, or electrical issues. If it stops working, you may need professional diagnostics or replacement, which could be costly.

2. **Compatibility Risks with Modifications** If the vehicle has undergone aftermarket modifications (e.g., security system upgrades, key fob reprogramming, or electrical tweaks), the antenna may not function as intended. Always verify compatibility before installation.

3. **Limited Lifespan Compared to Mechanical Keys** Electronic keyless systems can degrade over time, especially if exposed to moisture or extreme temperatures. The antenna itself may need replacement if it becomes damaged.

4. **Security Concerns (Theft Risk)** Keyless systems are vulnerable to **relay attacks**, where thieves use signal boosters to "read" the key fob s signal from a distance, unlocking and starting the car without physical access. While Mercedes has improved security measures, this remains a theoretical risk.

5. **Cost of Replacement** If the antenna fails, replacing it may not be cheap, especially if you need an **OEM (Original Equipment Manufacturer)** part. Aftermarket alternatives exist but may vary in quality and reliability.

6. **Dependence on Battery Health** The key fob s battery must be functional for the system to work. If the battery dies, you ll need a backup key or a battery replacement, adding inconvenience.

7. **Potential for False Alarms or Malfunctions** Occasionally, keyless systems can misread signals, leading to unintended door unlocks or other glitches. This can be frustrating, especially in high-security environments.

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### **Conclusion**

The **Mercedes-Benz A1729052301 (R172 SLC/SLK Rear Seat Keyless Go Antenna)** is a practical upgrade for owners who value convenience and modern technology. It eliminates the hassle of retrieving keys from the rear seat and integrates smoothly with the vehicle s smart features. However, like all electronic components, it comes with risks potential failure, security vulnerabilities, and dependency on battery life.

If you **prioritize ease of use and are comfortable with the minor risks**, this antenna is a worthwhile addition. However, if you **prefer mechanical reliability or are concerned about security**, you may weigh the benefits against the drawbacks before purchasing.

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### **Recommendation**

- **Buy if:** You frequently carry items in the rear seat and want seamless keyless access. Ensure the antenna is **OEM or high-quality aftermarket** to avoid compatibility issues.

- **Consider alternatives if:** You re concerned about security risks (e.g., relay attacks) or prefer a more traditional key system. In that case, a **backup mechanical key** or a **key fob battery replacement** might be a safer short-term solution.

- **Maintenance tip:** Keep the antenna and key fob **dry and protected** from extreme conditions to extend their lifespan. Regularly check for software updates from Mercedes-Benz, as they may include security or functionality improvements.

For most **SLC/SLK owners who rely on keyless convenience**, this part is a **recommended upgrade** just be mindful of its limitations. If in doubt, consult a **Mercedes-Benz specialist** before purchasing to confirm compatibility with your specific vehicle.

Details:

WOW Automotive Alt Design OEM premium used parts Same day shipping Verified Fit No type: Part No: condition: Used Good/Normal use see photos Quick fit summary: Mercedes-Benz SLC300 Base Convertible 2-Door 2017 - 2020 ; Final Edition 2020 ; SLC43 AMG SLK300 2016 ; SLK350 2013 - 2016 ; SLK55 2013 - 2016 Manufacturer Numbers, A / A, Shipping We typically ship parcels within 24 hours. Keywords for search: SLK250 SLK350 SLK55 AMG R172. All parts are tested either before or after removal from the vehicle. Shipping cost or carrier may change, based on final destination.

Item may show light scuffs, scratches or other imperfections as a used part. Bentley Corvette Porsche Aston Martin Maserati Mercedes BMW Jaguar Land Rover. Contact: Questions. Safe Packing Global shipping.

Item Condition.

part #: a1729052301 prices

• $24.00-$151.54

specifications seainterio:

• for models: Slc, Slk
• for makes: Mercedes
• for years: 2013-2020
• mpn: A1729052301
• part type: Seat Antenna
• manufacturer warranty: 1 Month

shipping seainterio:

• class: Standard
• type: Fixed
• cost: $0.00
• service: Standard
• transit: 2-5 Days

seller seainterio:

• rating: 99.9%
• city: Dallas, Texas
• # reviews: 4744

returns seainterio:

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

general seainterio:

• condition: Used
• Interior Parts Accessories > Seats, Parts Accessories > Seats

offer seainterio:

• quantity: 1
• availability: In Stock
• best offers: True
• started: May 13, 2026
• options: Ship-to-home
• sold: 0

payments seainterio:

• other
• credit card: Diners-club
• wallet: Paypal

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