The Mercedes-Benz Steering Lock Emulator is engineered as a direct replacement for the OEM ESL/ELV steering lock module found in W204, W207, and W212 chassis vehicles.
Steering lock failure is one of the most common issues in the Mercedes start authorization system between 2007 and 2014. When the ESL fails, the ignition turns on, but the vehicle will not start even if the key and EIS/EZS are fully functional.

Dealership replacement requires ordering a new steering lock unit and coding it to the EIS—an expensive and time-consuming process.
The MK3 ESL/ELV Emulator provides a fast, durable, reprogrammable, and cost-effective solution.

This new-design single-connector emulator supports lock sound output, LED status indicators, and compatibility with all major Mercedes key programming tools.

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🔧 Features

System Type: ESL/ELV Steering Lock Emulator
Fitment: Mercedes-Benz W204, W207, W212
Manufacturer: MK3
Condition: Brand New
Operation: Programming Required (supports multiple programming tools)
Lock Sound: Built-in SCL unlock sound
Connector: Single-socket new design

LED Indicators

• Green – SCL Unlocked
• Red – SCL Locked

Sound Behavior

• Plays lock/unlock sound when the emulator activates SCL unlock state.

Product Advantages

• Simple plug-n-play installation
• Fully reprogrammable
• Supports most Mercedes key programmers
• More durable than repairing original ESL
• Eliminates common W204/W207/W212 steering lock failure permanently

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⚙️ Technical Overview

The ESL/ELV steering lock in Mercedes vehicles often fails due to mechanical or electronic faults inside the steering lock motor and logic board.
Symptoms include:

• Key turns but car does not start

• No steering unlock sound

• ESL Locked/Unlocked errors

• EIS recognizes the key, but authorization does not complete

The MK3 ESL Emulator replaces the steering lock entirely and works with the EIS/EZS after programming.
Once programmed correctly:

• The emulator reports SCL Unlock to the vehicle

• Start authorization succeeds

• Ignition and engine start operate normally

LED Behavior Summary

Green LED: Programming successful / vehicle ready
Red LED: Wrong key, incorrect EIS data, or programming error
No LED: Check vehicle wiring or power supply

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🛠️ Installation Instructions

1. Remove the original ESL/ELV connector from the steering lock unit.

2. If the steering lock is in locked mode, ensure it is physically away from the vehicle.

3. Use your key programmer to read the EIS/EZS password.

4. Program the emulator using a supported Mercedes key programming device.

5. Connect the MK3 ESL Emulator to the vehicle harness.

6. Insert the key into the ignition.

7. If the LED turns green, the emulator is correctly programmed and the vehicle is ready to start.

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🔌 Compatible Mercedes Systems (EIS/EZS)

• W204 C-Class
• W207 E-Class Coupe/Cabrio
• W212 E-Class Sedan/Wagon

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🔧 Supported Key Programming Tools

• Abrites AVDI
• Xhorse VVDI MB BGA
• CGDI MB
• Autel IM608 / IM508 (with XP400)

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🚗 Vehicle Compatibility

Mercedes-Benz
• W204 — 2007–2014
• W207 — 2009–2015
• W212 — 2010–2016