WIS 80.57 Drive Authorization System

From W220 S-Class Encyclopedia
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Weak Batteries in Key

The function may be affected by weak batteries in the key. If your key will not lock and unlock the car from 10 m (30ft) or more, your batteries are weak and that will compromise the strength of the IR beam. Try changing the batteries in the key before you go to more complicated (and expensive) efforts at restoring the function.

Tip for Using Mechanical Key

Turn it all the way to the left (CCW).

Batteries

2003 Update S500L Key has two batteries ie CR2025 x 2
2005 S500 Keyless Go Fob has only 1 Battery #2025

How To Change Batteries

http://www.mbworld.org/forums/audio-...-pictures.html

Issue where Remote Control Key Will Not Rotate/Work/Turn in EIS (EZS)

Summary

Normally after inserting the correct Remote Control Key in the ignition lock (Electronic Ignition/Starter Switch (EIS) control module (N73)) it will turn instantly to position 1 (accessories), 2 (ignition on) and position 3 (engine start). However it seems that a common fault in the W220 occurs whereby the correct key will unlock the doors but once inserted in the ignition will not rotate and appears frozen. In my case this happened intermittently causing huge frustration when out travelling. Fortunately on one trip it eventually worked after continually trying and waiting twenty minutes. The link shows the investigation but the bottom line was that it was not a DIY solution.

  • Parts of a W220 Remote Control Key
  • How the Remote Control Key Works in a W220
  • Diagnosing An Intermittent Key
  • Testing EIS Induction Power Generator Output
  • Test of Induced Voltages In Actual OEM Remote Control Key
  • Removing the EIS

http://www.benzworld.org/forums/w220-s-class/1300215-cold-weather-electronic-key-problems-5.html

Everything you ever wanted to know about the Drive Authorisation System (DAS) and Keys

Information gathered from various official MBZ sources, included technical documentation, service documents, and even authorized technicians and factory personnel, by BenzWorld Member rudeney.

http://www.benzworld.org/forums/w163-m-class/1245088-everything-you-always-wanted-know-about.html

Programming W220 Remote Control Key

This video instruction is suitable for Car Key Master: CKM-100(PC Version) and CKM-200(Handhold Version), also it is suitable for Digimaster 3.

Part 1: http://www.youtube.com/watch?v=nKTab4Yxeds&feature=youtube_gdata_player

Part 2: http://www.youtube.com/watch?v=8TZh9p9sIuw&feature=relmfu

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