ELV Is A Self-occurring Mechanical Failure In The Steering Column Lock. The Occurrence Of The Fault Does Not Depend On Any Fault. In Case Of Malfunction, Even If There Is No Problem In The Vehicle Key, The Working Key Will Not Start The Vehicle Because The ELV Steering Column Lock Will Not Be Activated. In This Case, A ELV Steering Column Lock Must Be Installed In The Vehicle And Programmed Into The Vehicle. Type:ESL/ELV Steering Lock Simulator Emulator Fitment:for Mercedes Benz W204 W207 W212 W176 W447 W246 Note: Installation guide not included, we strongly recommend you seek professional installation. Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Note:Due to the frequent replacement of the outer packaging of the manufacturer, please refer to the actual product for details, but the functions are the same. Colour:Black Material:Plastic Package Contents: 1 * ESL ELV Steering Lock Simulator Emulator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.