Mercedes Benz W212 Keyless Entry Antenna Module A2128200989 – Original Used Part
RM 550
Condition: Used (Original)Description
Product Title
Mercedes Benz W212 Keyless Entry Antenna Module A2128200989 – Original Used Part
Diagnosis and Common Symptoms
When the A2128200989 module fails, the communication bridge between the vehicle's Keyless-Go system and the smart key is severed. Diagnostic scans typically reveal fault codes such as B1A5B11 (Keyless Go antenna circuit short to ground) or B1A5B13 (Antenna open circuit). On the dashboard, you will frequently encounter the "Key Not Detected" warning, even if the key is inside the cabin. Physical symptoms include the failure of the door handle proximity sensors to lock or unlock the vehicle and the push-to-start button requiring multiple presses or failing entirely until the key is physically inserted into the ignition.
Introduction
This Mercedes Benz W212 Keyless Entry Antenna Module is a Genuine used part harvested from a donor vehicle with confirmed electronic integrity. Every module has undergone a rigorous bench test and signal verification to ensure it meets factory range specifications. Choosing a Genuine used component ensures full compatibility with the W212 CAN-bus architecture without the signal interference issues often found in aftermarket alternatives. This part is ready for immediate installation to restore your vehicle's convenience features to factory standards.
Product Details
- Brand: Mercedes Benz
- Model Compatibility: W212 E-Class
- Part Name: Keyless Entry Antenna Module
- Part Number: A2128200989
- Condition: Genuine Used (Tested Working)
- Notes: Before installation, please inspect your existing wiring harness for signs of moisture ingress, as this is a common cause for antenna failure in the E-Class chassis.
Frequently Asked Questions
Q: What symptoms indicate failure? A: The most common signs are the "Key Not Detected" message, the inability to use the push-to-start feature, and the failure of the exterior door handles to respond to touch.
Q: Does this require coding? A: This module generally operates as a plug-and-play component. It acts as an antenna receiver and typically does not require SCN coding or VIN-locking to function within the Keyless-Go circuit.
Q: Is this original? A: Yes, this is a Genuine Mercedes Benz factory component. We exclusively provide original hardware to ensure the frequency range and signal strength remain consistent with the manufacturer's design.
Why Choose Us?
- Verified functionality through professional diagnostic equipment
- Actual photos/videos of the specific unit provided
- 30-day exchange warranty
- Sourced from premium donor vehicles to ensure internal component longevity
Shipping
Location: Kuala Lumpur, Malaysia Shipping: West Malaysia RM50 (Estimate) / East Malaysia RM80 (Estimate) Delivery: 1-2 working days Packaging: Secure anti-static packaging, heavy-duty shock absorption. (We send actual photos/videos of the unit and packaging before shipping)
Warranty and Return Policy
- 30-day exchange warranty from the date of receipt.
- Proof of professional installation by a qualified workshop is required for warranty claims.
- No returns if the item is opened, modified, tampered with, or damaged due to incorrect electrical wiring.
- Exchange only for confirmed internal electronic defects.
How to Order
- WhatsApp us to confirm compatibility with your specific VIN.
- Send your chassis number or a clear photo of your old unit label.
- Confirm order details and stock availability.
- Receive actual product photos and diagnostic test confirmation.
- Make payment via bank transfer.
- Item is shipped immediately with tracking details provided.
Contact Us
William – https://wa.me/60102992988 Lok – https://wa.me/60177720143
Price Notice
Price is estimated only. Actual price depends on current stock levels, specific part number revisions, and unit condition. Please WhatsApp us for a formal quote.
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