Having problems with your 2006 Toyota Sienna ?
Horn on my sienna goes off while replacing the battery
\015 I needed to replace the battery because it was completely dead. When I go to place the cables on the new battery, the horn goes off as if the alarm was going off. I tried hitting the unlock button with the keyless remote, but nothing happens and the horn continues to go off. I have to pull the cables off to stop the alarm.\015
Hook up cables and lock all doors,first try unlocking drivers door with key. If that does not workstart over and then try unlocking trunk/hatch with key. This usually will work, I highly sugest you use original key if possible.
Repair Help & Product Troubleshooting for 2006 Toyota Sienna
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