my 2006 Tacoma alarm started randomly going off!!!

Im not sure if it could be an electrical problem or just a defective/old alarm system. Also the engine seems to be idling a little slower since the alarm problem started. I had the battery, alternator, and starter tested at the local auto parts store. They said the battery was testing bad so I had AAA replace it, the next morning at 5am it went off randomly again and was hard to shut off. Has anyone else ever had this problem???

 

Is this an aftermarket alarm?

 

It came with the truck from a Toyota dealer when I bought it in 2009

 

any thoughts???

 

There might be a sensitivity setting on it that you can tweek. Find the ECU for the alarm and look for a little set screw that you can adjust to decrease the sensitivity. The alarm control box should be found somewhere under the drivers side dash, you might have to pretzel yourself to see it. I would guess that the sensitivity is set too high, that or the internal battery might be going dead. I'm not 100% certain that aftermarket alarms have internal batteries so that second one was a straight guess.

-J

 

thank you I will check it out after it stops raining

 

https://www.tacomaworld.com/threads...onics-under-my-dash-are.526742/#post-16802699

It might look something like the first picture in this thread.

-J

 

Definitely not enough information but...

If the truck/alarm has a hood pin switch so that the alarm sounds when the hood is opened the pin switch could have worn down and/or rain water is in the switch.

In order for a weak vehicle battery to affect the alarm to the point of it being difficult to turn off the vehicles battery will be so weak that the vehicle won't be able to start.

Replace the battery in the remote for the alarm.

To test a alarm systems shock sensor repeatedly kick a tire with a moderate amount of force and the alarm should not sound off. Then go to a door handle and with a closed fist hit the door handle hard with the side of your fist and the alarm should sound off. If those two scenarios occur without adjusting the shock sensor then it is set properly. False alarms occur through vibrations, like when a garbage truck or a really loud Harley drive by so the point of kicking the tire is to make vibrations (and not shocks) occur.

I would expect the alarm system itself to be in the driver's kick panel but it could also be under the dash. Some alarm systems have the shock sensor inside the alarms "brain" and some have an external shock sensor. The shock sensor adjustment will most likely be adjusted with a small flat blade slotted plastic screw, clockwise makes it more sensitive and counterclockwise makes it less sensitive. A teeny tiny turn does a lot so make very very small adjustments at a time.

I can't think of any situation that would make the alarms shock sensor more sensitive and make the engine idle slower.

 

OP post a picture of the remote control for the alarm and I might be able to tell you exactly what the shock sensor looks like and if it is a separate piece or is inside the alarms "brain".