How can I disable the alarm on my Subaru Forester while in storage?

I have a Subaru Forester with a factory-fitted Category 1 alarm/immobiliser. We will be leaving the car for six weeks in a secure garage but I am worried that the alarm will run down the battery. There doesn't seem to be any way of not setting the alarm. So could I disconnect the battery? Will there be problems with the immobiliser when I reconnect it?

Asked on 21 April 2012 by RS, via email

Answered by Honest John
Hook the car up to a battery conditioning trickle charger.
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