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.

You need: ICOM A2 emulator or cheap K+DCAN inpa cable

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:

E90 Post OEM DIY Guide

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