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Car Forum / BMW Cars / September 2007

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E46 locking/alarm

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David Haggas - 20 Sep 2007 15:15 GMT
I have an E30 at the moment with no alarms etc. I am considering an 02/03
E46 convertible. Is it possible to lock the car without arming the alarm -
for e.g. to leave a dog in the car without triggering it? Interested to hear
of any weakness generally in the factory alarm and locking system of the E46
Jeff Strickland - 20 Sep 2007 15:47 GMT
The factory equipped Central Locking System will lock all of the doors and
disable the ignition, but lacks the actual alarm horn/siren. This should
accomodate you and your dog. The dealership must program the car to accept
the alarm system if installed, so they should be able to disable portions of
the feature set -- the motion sensor. Since the alarm system is a cost up,
and provides minimal extra protection, I think you should be able to find a
used car that has no alarm.

>I have an E30 at the moment with no alarms etc. I am considering an 02/03
>E46 convertible. Is it possible to lock the car without arming the alarm -
>for e.g. to leave a dog in the car without triggering it? Interested to
>hear of any weakness generally in the factory alarm and locking system of
>the E46
daytripper - 20 Sep 2007 16:41 GMT
>>I have an E30 at the moment with no alarms etc. I am considering an 02/03
>>E46 convertible. Is it possible to lock the car without arming the alarm -
[quoted text clipped - 9 lines]
>and provides minimal extra protection, I think you should be able to find a
>used car that has no alarm.

Is there no user-accessible switch on an E46 that allows one to disable the
interior motion sensor? My roughly similar vintage S4 has a button tucked down
low on the B-pillar for this function. It doesn't persist beyond one locking
cycle, so one would have to remember to push it every time one locks up, but
at least it doesn't require a dealer fee...

/daytripper
'00 s4 6spd
Jeff Strickland - 20 Sep 2007 16:55 GMT
>>>I have an E30 at the moment with no alarms etc. I am considering an 02/03
>>>E46 convertible. Is it possible to lock the car without arming the
[quoted text clipped - 22 lines]
> but
> at least it doesn't require a dealer fee...

My daughter just had to have an alarm on her E46, so I bought her one on
eBay for Christmas last year. I got the factory alarm -- the
dealer-installed option, actually -- and she followed the directions and
installed it in well under an hour. It was really very simple to put in.
Reading the directions was more difficult than actually following them. In
any case, there was no bypass switch of any kind that would disable the
system for a trip.
Mike G - 20 Sep 2007 18:29 GMT
> The factory equipped Central Locking System will lock all of the doors and
> disable the ignition, but lacks the actual alarm horn/siren. This should
[quoted text clipped - 3 lines]
> up, and provides minimal extra protection, I think you should be able to
> find a used car that has no alarm.

On my UK '98 E39, the tilt, and interior movement sensor can be disabled by
pressing the remote locking button twice, or repeating the locking procedure
with the key.
Is this feature missing on US models?
Mike in the UK.

>>I have an E30 at the moment with no alarms etc. I am considering an 02/03
>>E46 convertible. Is it possible to lock the car without arming the alarm -
>>for e.g. to leave a dog in the car without triggering it? Interested to
>>hear of any weakness generally in the factory alarm and locking system of
>>the E46
Jeff Strickland - 20 Sep 2007 20:19 GMT
>> The factory equipped Central Locking System will lock all of the doors
>> and disable the ignition, but lacks the actual alarm horn/siren. This
[quoted text clipped - 9 lines]
> Is this feature missing on US models?
> Mike in the UK.

Unknown, but those sound like features of the Central Locking System, and
are independent of the alarm (which is a separate option).

The features of the 5 Series and of the 3 Series are different, I think.
JRE - 21 Sep 2007 01:35 GMT
<snip>
>> On my UK '98 E39, the tilt, and interior movement sensor can be
>> disabled by pressing the remote locking button twice, or repeating the
[quoted text clipped - 6 lines]
>
> The features of the 5 Series and of the 3 Series are different, I think.

The E46 alarm works as Mike suggests it might.  (We own two.)

JRE
Mike G - 21 Sep 2007 10:45 GMT
>>> The factory equipped Central Locking System will lock all of the doors
>>> and disable the ignition, but lacks the actual alarm horn/siren. This
[quoted text clipped - 12 lines]
> Unknown, but those sound like features of the Central Locking System, and
> are independent of the alarm (which is a separate option).

AIUI, if the car doesn't have an alarm, pressing the remote button once,
deadlocks the doors. A few seconds later, if an alarm is fitted, it is
activated along with the immobiliser, and tilt and interior movement
sensors. A second press of the button, only deactivates the tilt and
movement sensor. The car remains deadlocked and immobilised. With or without
an alarm.

> The features of the 5 Series and of the 3 Series are different, I think.

The above features seem common to all later BMW's. My guvnors 2000 3 series
works in exactly the same way.
Mike.
JRE - 21 Sep 2007 01:34 GMT
> On my UK '98 E39, the tilt, and interior movement sensor can be disabled
> by pressing the remote locking button twice, or repeating the locking
> procedure with the key.
> Is this feature missing on US models?
<snip>

No.

JER
 
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