Replacing Battery

[pjreessteer001]

I am in the UK, about to change my Boxster battery, and want to double check the procedure so that the alarm will not go ballistic when I do....

From looking at other posts on here, I THINK what I will need to do (once I have the car open, hood up etc.) is:

• Insert key, turn to position 2 - dashboard lights will come on
  
• Only NOW disconnect battery
  
• Leave key in place
  
• Change / connect new battery
  
• Only NOW remove key from ignition
  

As I understand it, I need to keep the key in etc. as on the UK / European cars there is a separate battery for the alarm, which you need to "trick" into thinking nothing is wrong before disconnecting the main battery?

Can anyone confirm that this is going to work, and not leave me deafened with upset neighbours??

Regards

PRS

[Tool Pants]

That procdure "sounds" right.

Some cars have an alarm siren in addition to the alarm horn. In the picture you can see it. It is black with a round red grlll for the siren, next to the main battery. I take it there is a small rechargeable battery in the black box for the siren. I "hear" the siren is very loud.

We do not have this in North America.

[pjreessteer001]

That procdure "sounds" right.

Some cars have an alarm siren in addition to the alarm horn. In the picture you can see it. It is black with a round red grlll for the siren, next to the main battery. I take it there is a small rechargeable battery in the black box for the siren. I "hear" the siren is very loud.

We do not have this in North America.

Many thanks - yes, I believe it is different in the US, and yes, it IS very loud, as it also goes off on other occasions (e.g. when failing to get the key in the ignition within 10 secs. or so of having to use the key to access the car, having left the car in the garage for 3-5 days.....!).

Many thanks once again - of anyone else can "confirm" then please feel free, otherwise I will give it a go, and report back!

[fastboydave]

That should do it. But for your info, when my battery died (had to call the AA out as wasnt sure whether i had a short or dead battery at first) he managed to 'trick' the alarm from going off by removing the +ve lead first before the -ve. The alarm never went off and i dont think i had the key in the ignition? Maybe give it a go, but get your ear plugs in!

[JONNYVINO]

I have tried this procedure with no success.

Tried the following procedures with the following results:

1) Removed +'ve Terminal first - Alarm goess off.

2) Removed -'ve Terminal first - Alarm goess off.

3) Turned Key to position 2 with dash lights then Removed +'ve Terminal first - Alarm goess off.

4) Turned Key to position 2 with dash lights then Removed -'ve Terminal first - Alarm goess off.

5) Open Car door with key and tuen ignition to position 2 with dash lights then Removed +'ve Terminal first - Alarm goess off.

6) Open Car door with key and tuen ignition to position 2 with dash lights then Removed -'ve Terminal first - Alarm goess off.

Resultis that neighours hate me and I can't get the battery out.

Any ideas from anyone???