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 III D contains a "bar/release code" function that activates and deactivates keys of the EWS III D. Any key may be "Barred" except the key in the ignition at the time of deactivation. The lost or stolen key can be identified by the identification of the remaining keys.

There is no limit to the number of times a key can be activated/deactivated.

Workshop Hint: 

With E46 Style diagnostics, check the following status' in Diagnosis, Control Unit Functions, EWS:

• Starter Status:

  Park/Neutral, BC Code active, Engine Speed, Double lock status, Starter Enabled.

• Key Status:

  Transmits, Changing code, Key I.D., Key number, Key Password, Key disabled

• DME Wire Status.
• Selector lever/Clutch Status.
• Central Locking Status.
• Input Power.
• BC Code via K-Bus.

System	Introduced	Model	Features	One Touch Starting
Drive Away Protection	9/93 - 12/93	All	Injection/Ignition Disabled if car In Double lock	No
EWS I	1/94 - 1/95	All	Starter Immobilizer Injection/Ignition Disable	No
EWS II	1/95	E-36 To End of Production E36/7 To MY 1998 E-34 To End of Production E-38 To M.Y 1997 E-38 To 3/97 Production	Transponder Key Starter Interlock DME - EWS ISN Code	E38 Late MY 1997
EWS III 3.2	9/96	E 38 MY 97 E39 From 9/97 Production	Transponder Key Starter Interlock IDME-EWS ISN Code K-Bus	Yes V-12 and V-8 Only
EWS III 3.3	5/97	E38 MY 1998 From 5/97 Production E39 From 3/97 Production	Transponder Key Starter Interlock K-Bus DME-EWS Rolling Code	Yes V-12 and V-8 Only
EWS III D	MY 1999	Z3 Only	Transponder Key Starter Interlock DME-EWS Rolling Code	No 85101103aa