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01-18-2016, 02:02 PM | #1 |
Drives: Yaris 2008 Sedan Join Date: Apr 2012
Location: Cambridge, MA
Posts: 10
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Disable the stock (?) alarm so I can safely reconnect the battery
Hello all,
I have a 2008 Yaris Sedan. I'm the second owner and I believe the car has the stock (OEM) alarm system (not an aftermarket) installed. In the past when I've needed to unplug the battery to work on the car, I've also been hesitant because when reconnecting the battery the car alarm sounds immediately, which is pretty scary when you're working on a car and holding a battery terminal. I'm looking to do some work on my car this weekend and what an answer to this question once and for all: how do you disable the stock alarm so that you can safely unplug and reattach your battery without the alarm going off? I've searched the forums, but without luck. I even downloaded the "2008 Toyota Yaris - Theft deterrent system" manual from Toyota. Very confusing stuff. To deactivate the alarm, it says: Unlock the doors or trunk using the key (vehicles without wirelessThen it later says When the battery is disconnectedOkay. But how do I deactivate the alarm when the battery is disconnected? The key FOB obviously doesn't work when the battery is disconnected. Confused and looking for help. |
01-18-2016, 05:08 PM | #2 |
Drives: Sedan 07 Join Date: Oct 2012
Location: Asia
Posts: 478
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it probably means when the battery is disconnect and then reconnected, then be sure to deactivate the alarm using the key fob.
just my 2 cents. |
01-18-2016, 07:31 PM | #3 |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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The OEM theft deterrent ECU is powered by the DOME, ECU-IG and ECU-B fuses. Pulling the DOME and ECU-B fuses would keep it from firing as soon as you connect the battery.
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01-19-2016, 11:59 AM | #4 |
Drives: Yaris 2008 Sedan Join Date: Apr 2012
Location: Cambridge, MA
Posts: 10
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CTScott,
Thanks. I'm going to try that later tonight. I'll confirm if that disables the alarm. |
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