How to remove the Electronic Ignition Switch (EIS) from your Mercedes vehicle

1. How to remove the Electronic Ignition Switch (EIS) from  your Mercedes vehicle  If you are having problems with the ​Electronic Ignition Switch (EIS)​ of your  Mercedes-Benz, you would probably have already checked the crazy prices Mercedes  dealerships charge for replacing the module.  At Autotronics we offer a much more affordable alternative to replacing the whole EIS /  EZS unit: repairing it! Our professional EIS repair service always comes with a ​limited  lifetime warranty​, so you can rest assured you are covered for as long as you own the  vehicle.  The only downside some of our customers find before sending their EIS to us is that  they think they don’t have the tools or knowledge necessary to remove the unit from the  vehicle. If you are in the same situation, don’t worry because, contrary to the first  impression, removing the ignition switch from your Mercedes is not a difficult process  at all. With some manual skills, a bit of patience and just a screwdriver, you can also  have your EIS / EZS removed from your vehicle in less than 5 minutes.  All you need is to do is removing the outer ring from the ignition switch, turning it  anti-clockwise with the help of a screwdriver, and then pull the EIS from the inside of the 

2. dashboard. You can also use a specific tool to remove the outer ring; this tool will cost  you less than £10 online.  To pull the EIS from the back of the dashboard, the quickest option is to remove the  bottom pedal panel unscrewing it and then just pulling the EIS with your hands. In some  models, you may also try to remove the light switches panel, the vent panel or the  instrument cluster, so that you can pull the EIS from those holes. In any case, the  procedure would be same: to remove the panel with the help of a screwdriver and then  to pull the EIS from its position.  Last step is the easiest one: just unplug the EIS from its leads. Once you have the EIS  unit in your hands you will notice that it is a small black box with some serial numbers  written down in one of the sides; they are the Mercedes-Benz part numbers and differ  depending on the vehicle’s chassis number (W169, W203, W211, etc.). You can call with  these part numbers and the description of the fault, so that our engineers can give you  the best possible technical advise about your EIS problem.  If you are still struggling while removing the EIS unit from the dash, please do not  hesitate to ​contact our technical department​ as well. They will be delighted to help you.