15
EWS
Replacement Procedures
Keys
Up to 6 additional keys may be ordered as replacement keys. The EWS II control module
is codeable for only 10 keys (4 delivered with vehicle and 6 replacement).
EWS II Control Module
Replacement EWS II Control Modules must be ordered VIN specific. EWS II modules con-
tain the VIN and coding from the factory to recognize the key codes. Modules from other
vehicles will not recognize keys as being valid and not start the engine.
EWS II Control Modules store the Central Coding Key (ZCS) and the VIN. If the EWS II con-
trol module is replaced the system must be ZCS coded (SIB 61 02 96 and TRI 61 01 95).
The EWS II module must be synchronized with the DME (aligned). There is no limit to the
number of times the ISN may be changed in the EWS II module.
DME Control Module
The DME Control Module is not ordered VIN specific and must be programmed during
replacement. The ISN from the new DME must
be transferred to the EWS II module using the
DISplus or MoDic.
Key Activation
Keys that are lost or stolen may be deactivated
or made to not operate the starter functions.
The SERVICE FUNCTIONS of the DISplus or
MoDic for EWS II contains a “Bar/Release
Code” function that activates and deactivates
keys of the EWS II. Any key may be “Barred”
except the key in the ignition at the time of
deactivation. The lost or stolen key can be iden-
tified by the identification of the remaining keys.
There is no limit to the number of times a key
can be activated/deactivated.
EWS II Update
Beginning MY 1997 E31 and E36 vehicles with manual transmissions were updated to include a clutch
pedal position switch. The clutch switch signal is provided by a hall-effect sensor providing a high sig-
nal when the clutch is depressed.
Note: A “Barred” key will not start the engine, it
will still unlockthe vehicle.
