Mercedes-Benz GLC 300 OEM Options Review: Cost & Results

Upgrade Your Mercedes-Benz GLC 300 with Factory Options

For owners of premium SUVs like the Mercedes-Benz GLC 300, a sophisticated driving experience extends to every detail, including the smart key. If you're looking to enhance your vehicle's convenience and style, consider a factory option retrofit that brings your smart key system into the modern era. This review explores an upgrade that adds the 'proximity door' (PKE) function, allowing your doors to automatically unlock as you approach and lock as you walk away, alongside a stylish AMG-inspired new key design. This isn't just about aesthetics; it's about integrating seamless technology that complements the luxury of your GLC 300.

AMG New Key & Proximity Door (PKE) Installation Details

This specific upgrade was performed on a 2025 Mercedes-Benz GLC 300. The process involves replacing the existing smart keys with two new, sleek, oval-shaped keys that feature an AMG aesthetic. Crucially, the proximity door (PKE) system is integrated, enabling keyless entry and exit. When you have the key fob on your person, the vehicle detects your approach and automatically unlocks the doors. Conversely, as you move away, the doors automatically lock, enhancing security and convenience. All original functions, such as remote start, door lock/unlock, and trunk operation, remain fully integrated and often become more intuitive to use. The entire installation typically takes about 2 to 3 hours. In Korea, the estimated cost for this type of key modification and feature addition ranges from 300,000 to 600,000 KRW (approximately $220-$440 USD, depending on the exchange rate and specific scope of work). This service is available through various certified installers, with a network of over 1,000 locations in Korea offering verified installation cases for different vehicle models.

Before & After: Enhanced Convenience and Style

The transformation after installing the AMG-style keys and proximity door function is significant. Imagine approaching your GLC 300 with arms full of groceries; the doors unlock automatically without you needing to fumble for your keys. This level of convenience is a hallmark of premium vehicle technology. Beyond the practical benefits, the new oval AMG-style keys add a touch of sporty elegance, reinforcing the vehicle's luxurious image. This upgrade elevates the daily driving experience, making the interaction with your vehicle smoother and more satisfying from the moment you approach to the moment you depart.

Installation Process:

1. Key Replacement: The original Mercedes-Benz GLC 300 smart keys are carefully removed.
2. New Key Programming: Two new AMG-style oval keys are programmed to sync with the vehicle's systems.
3. PKE System Integration: The proximity door (PKE) sensors and modules are installed and configured to enable automatic locking and unlocking based on key fob proximity.
4. Functionality Test: All integrated functions, including remote start, door locks, and trunk release, are thoroughly tested to ensure seamless operation.

The durability of these upgraded systems is designed to match OEM standards, meaning with proper care, they should last for many years. Maintenance typically involves keeping the key fobs clean and ensuring their batteries are replaced periodically, similar to standard smart keys.