Mercedes-Benz W212 Ignition Switch A2129055600 - Used Original Parts
RM 600
Condition: Used (Original)Description
Mercedes-Benz W212 Ignition Switch A2129055600 - Used Original Parts
Diagnosis and Common Symptoms
As a senior diagnostic technician, I frequently address immobilization and terminal voltage failures within German electrical architectures. For the Mercedes-Benz W212 E-Class, failure of the Electronic Ignition Switch (EIS/EZS), part number A2129055600, is a well-documented issue typically stemming from microprocessor degradation or failed infrared optical sensors. When this module fails, the vehicle will exhibit a completely dark instrument cluster upon key insertion, and the electronic steering lock (ESL) will fail to disengage. You will experience a strict crank/no-start condition or no starter engagement at all, despite having a fully charged battery. Diagnostic scans using advanced equipment will consistently reveal lack of communication with the EZS on the CAN bus network, or specific fault codes such as B2254 (Steering lock communication malfunction) and internal control unit hardware errors.
Introduction
When repairing complex drive authorization systems, utilizing a Genuine used component is essential for maintaining network stability and correct voltage regulation. This replacement ignition switch has been rigorously bench-tested to verify internal module integrity and flawless infrared key recognition. By selecting a Genuine used part, you bypass the unreliability of aftermarket replicas and ensure exact integration with your vehicle's existing CAN architecture. Every unit we supply is confirmed to generate the correct terminal 15 wake-up signals necessary for an authorized engine start sequence.
Product Details
- Brand: Mercedes-Benz
- Model Compatibility: W212 E-Class Chassis
- Part Name: Electronic Ignition Switch (EIS / EZS) A2129055600
- Condition: Genuine Used (Tested Working)
- Notes: This is a strict anti-theft security component locked to its donor vehicle. It requires specialized data transfer (cloning) from your original unit or virginizing and programming by a qualified automotive locksmith prior to installation.
Frequently Asked Questions
Q: What symptoms indicate failure? A: Primary indicators include an unresponsive smart key, the instrument cluster failing to illuminate when the key is inserted, the steering wheel remaining locked, and the vehicle refusing to crank or start.
Q: Does this require coding? A: Yes. Because it is a core component of the immobilizer system, you cannot simply plug and play. The module must be programmed, virginized, or cloned by a module specialist to synchronize with your specific Engine Control Unit and Electronic Steering Lock.
Q: Is this original? A: Yes, this is a Genuine factory component carefully extracted from a donor vehicle. It retains the exact manufacturing standards, hardware durability, and software compatibility intended by the factory.
Why Choose Us?
- Verified functionality
- Actual photos/videos provided
- 30-day exchange warranty
- Rigorous bench-testing of infrared data reading capabilities and terminal output voltages to ensure the module is fully stable and ready for cloning.
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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