Mercedes-Benz W212 Electronic Steering Lock Module A 212 900 66 12 - Used Original Parts
RM 800
Condition: Used (Original)Description
Here is the creative top half for the product listing, written from the perspective of a Senior BMW Technician.
Product Title
Mercedes-Benz W212 Electronic Steering Lock Module A 212 900 66 12 - Used Original Parts
Diagnosis and Common Symptoms
From the workshop floor, the call for a W212 no-start is a familiar one. The primary suspect is often this Electronic Steering Lock (ESL/ELV) module. The classic symptom is a complete no-crank, no-start condition where the driver inserts the key, and nothing happens beyond the dashboard lights illuminating. You will not hear the characteristic "whirring" or "clicking" sound of the steering lock disengaging from the column.
On your diagnostic scanner, you'll typically find Diagnostic Trouble Codes (DTCs) pointing to a fault within the Drive Authorization System (DAS) or a direct communication failure with the N26/5 ESL control module. A dashboard warning displaying a red steering wheel and key symbol is the final confirmation of a critical internal failure within this unit.
Introduction
A failed ESL module can immobilize your E-Class, but the repair doesn't have to involve the high cost of a new unit from the dealer. We offer a cost-effective and reliable solution: a Genuine Mercedes-Benz ESL, carefully removed from a donor vehicle. Each module undergoes a rigorous bench-testing procedure to confirm full mechanical and electronic functionality before it is approved for sale. This is the professional-grade repair component you need to get your client's vehicle back on the road.
Product Details
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Brand: Mercedes-Benz
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Model Compatibility: W212 Chassis (E-Class, E350, E550, etc.)
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Part Name: Electronic Steering Lock (ESL/ELV) Module
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Condition: Genuine Used (Tested Working)
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Notes: This unit is a critical security component. It must be programmed and synchronized to the vehicle's Electronic Ignition Switch (EIS) by a qualified technician with appropriate diagnostic equipment. Verify part number A 212 900 66 12 matches your original unit for direct compatibility.
Frequently Asked Questions
Q: What symptoms indicate failure? A: The most common signs are the key turning but the engine not cranking, the steering wheel remaining locked, and no audible 'click' from the steering column when the key is inserted.
Q: Does this require coding? A: Yes, absolutely. This module must be programmed and personalized to your specific vehicle's drive authorization system (EIS/EZS) using professional tools like Xentry/DAS or Autel.
Q: Is this original? A: Yes, this is a Genuine Mercedes-Benz part, removed from a vehicle and tested to meet factory operational standards.
Why Choose Us?
- Verified functionality
- Actual photos/videos provided
- 30-day exchange warranty
- Bench-tested for motor actuation and CAN bus communication
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
Ready to order or have questions? Tap the WhatsApp button to chat with our team directly.
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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