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 Not Start The Vehicle Because The ELV Steering Column Lock Not Be Activated. In This Case, A New ELV Steering Column Lock Must Be Installed In The Vehicle And Programmed Into The Vehicle. Type:ESL/ELV Steering Lock Simulator Emulator Fitment:for W204 W207 W212 W176 W447 W246 Note: Installation guide not included, we strongly recommend you 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