EWS II system introduction

System Components

Changes to the European Insurance Commission regulations made it necessary to introduce a new theft protection system with greater capabilities and a higher level of security.
The EWS II system operates independent of the mechanical key. The mechanical key only makes a request of the vehicle starting system. Verification of the key electronically is required before the starting procedure is initiated.
The system features wireless communication between a programmed EEPROM housed in the ignition key and the EWS II control module. A key which is properly coded to the EWS II control module is required before starting operation continues. The EWS II and the DME control modules are synchronized through an Individual Serial Number (ISN).
The ISN, stored in the EWS II, must match that of the DME every time the ignition is switched “ON” before engine operation is allowed.
EWS II was installed on E31, E34, E36, E38 and E39 vehicles.
Major components of the EWS II system are:
• Key with Transponder
• Ring Antenna
• Transmitter/Receiver Module
• EWS II Control Module
• DME Control Module

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