Mercedes Immobiliser

The immobiliser on my e300 Mercedes won't disable. I have already replaced the rear view mirror. What else could the problem be?

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.