Emergency Brake on 2003 Mercedes-Benz CLK500

emergency brake will not stay on. How hard is it to access the locking mechanism under the dash?

Asked by for the 2003 Mercedes-Benz CLK500
here is link to a web site with repair instructions, you can see for yourself. Pretty much anything under the dash on a Benz is no plaything. Lots and Lots of wires, modules, cables etc, etc.