The MK3 Screw-Type Steering Lock Emulator (MK12690) is designed to replace the original ELV/ESL steering lock found in Mercedes-Benz W204, W207 and W212 vehicles.
Factory steering locks frequently fail mechanically, causing the vehicle to refuse to start even when the key and ignition function normally.

Dealership replacement requires ordering a new ELV, waiting for delivery, and performing online coding — an expensive and time-consuming process.

This screw-mounted ELV emulator allows you to program it once using any supported Mercedes key programming device and reuse it on other vehicles when needed.
It fully simulates the OEM steering lock and includes an authentic lock/unlock sound output.

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🔧 Features

System Type: Steering Lock Emulator (ELV / ESL)
Fitment: Mercedes-Benz W204, W207, W212
Manufacturer: MK3
Product Number: MK12690
Installation: Screw-type housing, plugs directly into vehicle harness
Programming: Required (EIS password needed)
Lock Sound: Built-in OEM-style lock/unlock sound
LED Indicators:

• Green: Programming success / Vehicle ready to start

• Red: Wrong key / programming error

• No Light: Power or wiring issue
  Condition: Brand New
  Weight: 75g

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⚙️ Technical Overview

The OEM Mercedes ELV contains mechanical components that often fail due to wear.
When the steering lock does not release:

• The key turns normally

• Ignition lights come on

• Engine will NOT start because the steering lock does not report “unlocked”

Using the MK12690 ELV emulator:

• You program it once using EIS data (via VVDI, CGDI, AVDI, Autel, etc.)

• After programming, connect it to the vehicle

• The emulator replaces the damaged steering lock, permanently bypassing ELV failures

More robust and reliable than repairing a broken OEM ELV unit.

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🛠️ Installation & Programming Instructions

1. Turn off the ignition.

2. Remove the original ELV connector from the steering lock unit.

3. If the vehicle steering is locked, remove the steering lock from the vehicle first.

4. Use a Mercedes key programmer to calculate the EIS password.

5. Program the MK12690 emulator using the key programming device.

6. Connect the emulator to the ELV plug inside the vehicle.

7. Insert the key — the LED should turn green, meaning programming and communication are successful.

8. Start the vehicle.

LED Behavior

• Green Light: Programming successful – vehicle ready to start

• Red Light: Wrong EIS key / incorrect programming

• No Light: Check power wiring / vehicle harness

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🚗 Vehicle Compatibility

Mercedes-Benz ELV/ESL Models
Compatible with:

• W204 – C-Class (2007–2014)

• W207 – E-Class Coupe/Cabrio (2009–2016)

• W212 – E-Class Sedan/Wagon (2009–2016)

Supported EIS/EZS Types:

• W204 EIS

• W207 EIS

• W212 EIS

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🔧 Supported Key Programming Tools

Fully compatible with:

• Abrites AVDI

• Xhorse VVDI MB & VVDI Key Tool Plus

• CGDI MB

• Diagspeed

• Autel IM series

• Other Mercedes EIS programmers