battery replacement BMW 3 SERIES 2002 E46 Drive Away Protection Syst

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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 III (3.3) Control Module
Replacement EWS III (3.3) Control Modules are ordered VIN specific. The module is
received with the same “Rolling Code Table” as the original module. Once ZCS coded, the
DISplus software “resets” the current rolling code in the DME back to “Rolling Code” #1,
providing synchronization of both modules.
DME Control Modules
Replacement DME Control Modules are “off the shelf” and must be programmed for the
specific vehicle. After programming the DISplus software informs the EWS III (3.3) control
module that a new DME has been installed. The next time the ignition is switched on, the
EWS III (3.3) module will send the entire “Rolling Code Table” to the DME and reset it to
“Rolling Code” #1.
The DME will automatically burn the “Rolling Code Table” into its memory.
Once the table
has been burned into the DME memory it can NOT
be changed. For this reason once a
DME is “Married” to the vehicle it will not work in any other vehicle.
Under certain condition “Alignment” of the DME and EWS III (3.3) modules may still be nec-
essary. The alignment procedure only resets the code table to code #1 it does not change
the “Rolling Code Table”.
Key Activation
Keys that are lost or stolen may be deactivated or made to not operate the starter func-
tions. The SERVICE FUNCTIONS of the DISplus or MoDic for EWS III (3.3) contains a
“bar/release code” function that activates and deactivates keys of the EWS III (3.3). 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:
While checking key operation, don’t forget to
wait 10 seconds before inserting the next key.
You can not BARthe key in the ignition.Workshop Hint:
A dead key battery does not affect vehicle start-
ing.
Keys without replaceable batteries are not
charged if the ignition is in the KLO (Off) posi-
tion.