EDITION: The procedure described here is for another mod... the mod for disconnecting the alarm with inmobiliser and not with the door lock is made by changing a different bit... clarified in this post by my edition
Hello, I will bring up this thread tu publish a new configuration bit (well, exactly 2) that I have found out. It is about the beep and blinkers flash when opening/closing with the key in the driver's door lock. By default, cars with stock alarm usually have this feature activated... but if you have activated the alarm afterwards (which is my case) then these bits will be 0, and this feature will be off.
Another mod consists in disconnecting the alarm with the inmo (key in ignition) when opening with the key in the driver's door-lock. VW configures the CCM so that when you open the car with the key, the alarm will be switched off; but you can change this functionality so that when you open with the key, the alarm will remain active during 30 seconds more, timeframe that you have to enter the key in the ignition (so that the inmo recognises the key). Then the cluster will send a "key recognition" message to the CCM and the alarm will be switched off.
This configuration bits only change the behaviour of the key lock and the alarm... and does not affect the behaviour of the remote...it works exactly the same.
With this change, when you open with the key, the led will keep blinking and the horn will not chirp or blinkers flash because the alarm is still on. It will be disabled when the inmo reads the key.
I only can confirm that it works for 1C0 CCMs, although this byte is also present in 1J0 CCMs... so it may work also for these CCMs. For those of you who want to try, this is the procedure:
EDITION: I will include both mods in the procedure.
MOD 1: Activate bip/flash when opening/closing by using the key into the lock:
* Connect and login vdspro to the CCM.
* Read address 04364. The first three bytes (which must be the same) will read a certain value, for instance a value of 48. Back-up in a piece of paper this number.
* Convert this to binary. So 48 = 00110000
* We have to set to 1 the bits in bold... if any is already with a value of 1 it will be kept like that... so the number turns into 00111100, which is equivalent to the decimal 60.
* We will write this number three times at addresses 04364, 04365 and 04366.
* Disconnect and test
MOD 2: Activate the disconnection by inmobiliser:
* Connect and login vdspro to the CCM.
* Read address 04355. The first three bytes (which must be the same) will read a certain value, for instance a value of 255 or 24 (it could be any other, depending on other features activated or disabled). Back-up in a piece of paper this number.
Now there are two possibilities: If you have 255, then the new value will be 128 to activate the mod. In another case, follow this:
* Convert the value to binary. So 24 (for instance) = 00011000
* We have to set to 1 the bit in bold... if it is already with a value of 1 then the feature is also active.. so the number turns into 10011000, which is equivalent to the decimal 152.
* We will write this number three times at addresses 04355, 04356 and 04357.
* Disconnect and test
This feature, for my understanding, makes the alarm "useful", because any thief can (and actually do) break the lock, open the car and disconnects the alarm all at once... with this, after 30 seconds of breaking the lock, the alarm will go off, even if the battery is disconnected. Nice feature for my understanding. Cheers!