Mercedes-Benz E-Class OEM Options Review — Cost & Results

Upgrade Your Mercedes-Benz E-Class with OEM Options

Considering enhancing your Mercedes-Benz E-Class with factory-approved upgrades? This review focuses on a popular OEM option retrofit: installing a new generation smart key and a Passive Keyless Entry (PKE) system. This upgrade aims to boost convenience and modernize the vehicle's functionality, offering a seamless experience similar to the factory's 'Keyless-Go' feature. We'll cover the installation process, the tangible before-and-after results, and what to consider before investing in such a factory upgrade.

OEM Options Installation: Smart Key & Proximity Entry

This specific OEM option retrofit involved upgrading a Mercedes-Benz E350 with two new-style smart keys and integrating a PKE system. The goal was to replace the older smart key design with a sleeker, more modern version and add the convenience of proximity-based door locking and unlocking. The PKE system allows the vehicle to automatically unlock as you approach and lock as you move away, provided the smart key is within range, eliminating the need to manually press buttons.

Installation process:

1. Smart Key Programming: The new smart keys are programmed and registered using the vehicle's official protocols to ensure full compatibility and security.
2. PKE System Integration: The Passive Keyless Entry sensors and modules are installed and linked to the vehicle's central locking system.
3. Functionality Testing: All functions, including door lock/unlock sensitivity, remote range, and engine start, are thoroughly tested to ensure proper operation.

The installation was performed as a mobile service, meaning the technician came to the customer's location. In the case detailed in the original Korean context, the service was completed at the customer's home in Incheon, South Korea. The entire process, from smart key creation and function setup to sensitivity adjustments and operational tests, took approximately 1 hour and 20 minutes. This mobile approach offers significant convenience, saving the owner a trip to a workshop.

Before & After: The Impact of OEM Options

Before the upgrade: The Mercedes-Benz E-Class had the original smart key design, and lacked the automatic proximity-based door locking and unlocking feature. This meant manual operation of the key fob was necessary for securing and accessing the vehicle.

After the upgrade: The owner now benefits from two sleek, modern smart keys. More importantly, the PKE system provides a significantly enhanced user experience. Approaching the car with the smart key in a pocket or bag results in automatic unlocking, and walking away triggers automatic locking. This creates a 'keyless' experience that rivals the factory's own Keyless-Go system, adding a touch of modern luxury and convenience to daily use. The sensitivity of the PKE system was adjusted to ensure a natural and responsive interaction with the vehicle.

Important Considerations: When opting for smart key system upgrades or similar OEM options, it's crucial to use a service provider that employs professional techniques and adheres to genuine protocols. Improper installation can lead to vehicle errors or compromise security. Always verify the expertise and reliability of the installation service.

Pricing and Durability: In the Korean market, this type of upgrade, including two smart keys and PKE integration, typically starts around 300,000 KRW (approximately $220 USD, subject to exchange rates). The exact cost can vary based on the vehicle's model year, the number of keys required, the extent of PKE system integration, and the installation method. The installed systems are generally expected to last for over three years, and the service provider often includes a warranty period for post-installation issues. It's advisable to get a detailed quote after the vehicle has been inspected.