BENZTECH MODULES

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Mercedes Benz Electronic Ignition Switch Frequently Asked Questions.

Below is a list of frequently asked questions regarding the programming and repair of the Mercedes Benz Electronic Ignition Switch (EIS) for Mercedes Benz C-Class, E-Class, R-Class, CL-Class, S-Class, GLK, SLK, and chassis W203, W204, W207, W164, X164, W210, W211, W219, W220, W221, W208, W463, R171, R230.

Frequently Asked Questions about

Mercedes Benz Electronic Ignition Switch

What is the EIS (Electronic Ignition Switch) in a Mercedes-Benz, and why does it require programming?

The EIS is a component of the DAS (Drive Authorization System). It has security data (FBS data) stored inside of it. Once drive authorization has been granted, the EIS plays a part in the vehicle's ignition system, and CAN BUS communication. Programming is necessary when replacing the EIS, adding new keys, or addressing DAS issues.

How do I know if my Mercedes-Benz electronic ignition switch needs programming?

If you experience issues with starting your vehicle, key recognition problems, key turning mechanical issues, or warning lights related to the ignition system, it's advisable to have the electronic ignition switch diagnosed.

I have a FBS4 EIS, can you program / clone it?

No. FBS4 EIS and keys cannot be cloned / programmed. There are currently no aftermarket tools that accomplish this yet. The only solution for FBS4 EIS and key programming is the Mercedes-Benz Dealer or an authorized Mercedes-Benz independent shop.

Is programming the Electronic Ignition Switch a common procedure during regular maintenance?

Programming is not part of routine maintenance. It is performed when installing a new ignition switch, replacing keys, or addressing DAS related concerns.