How to Activate BMW E90 OEM Alarm System

Feature Overview:

Activating the OEM alarm will enable a chirp sound when locking/unlocking the doors from the key fob, and if you have the iDrive system installed, you will be able to easily activate and deactivate some of the alarm features.
ECU/s Effected: CAS, CAPPL, DWAI, DWAS, CIC

Feature Confirmed Working On The Following Car Model Years: 2009 E90 (2006-2011 should be ok)

Note: You must have the BMW OEM Alarm System Hardware installed for this feature to work correctly. To learn how to install the BMW OEM alarm system yourself, visit the following link:

1. Vehicle Options (VO) To Add:

+K302
(Note: Adding this vehicle option would give you access to the DWAI and DWAS modules. If your vehicle already has the DWAI and DWAS modules, this step may not be necessary.)

2. Change The Following Parameters:

  • DWAI Module
Parameter Old Value New Value
LAUTSTAERKE nicht_aktiv aktiv
ALARM_OPT_FERNLICHT nicht_aktiv aktiv
QUIT_AKUST_SCHAERF_KLAPPE nicht_aktiv aktiv
PANIK_ALARM nicht_aktiv aktiv
QUIT_AKUST_ENTSCH nicht_aktiv aktiv
DEF_QUIT_AKUST_ENTSCH nicht_aktiv aktiv
DEF_QUIT_OPT_ENTSCH nicht_aktiv aktiv
DEF_QUIT_AKUST_SCHAERF_KL nicht_aktiv aktiv
ANFRAGE_FENSTERPOSITIONEN nicht_aktiv aktiv
PIAU_AKUST_ENTSCH nicht_aktiv aktiv
PIAU_AKUST_SCHAERF_KLAPPE nicht_aktiv aktiv
SIGNAL_HK nicht_aktiv aktiv
  • DWAS Module
(Note: change the below values only if the chirp is too quiet)
Parameter Old Value New Value
BUZZER_HIGH_LEVEL wert_06 wert_04
wert_07 wert_05
wert_08
  • CAS Module
Parameter Old Value New Value
SONDERTASTE_PANIKALARM nicht_aktiv panikalarm
MOTORHAUBENKONTAKT nicht_aktiv aktiv
  • CAPPL Module
(Note: If your vehicle does not have the CAPPL module below, skip to the CIC module table)
Parameter Old Value New Value
ACOUSTIC fkt_gesperrt fkt_frei
C941C_QUITT_AKUST_KLAPPE fkt_gesperrt fkt_frei
K9416_QUITT_AKUST_ENTSCH fkt_gesperrt fkt_frei
C9413_QUITT_AKUST_SCHAERF fkt_gesperrt fkt_frei
  • CIC Module
(Note: This next step is only necessary if your vehicle does not have the CAPPL module above)
Parameter Old Value New Value
ACOUSTICAL_LOCK_CONFIRM nicht_aktiv aktiv
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