My Toyota Sienna Won't Start Just Clicks, What's Wrong?

There are many things that you can troubleshoot and check if your car won’t start before taking it to a garage. If you can figure out what is causing your car not to start then you can save the time and money of calling out a mechanic. However, if you do not feel comfortable trying to fix your car yourself, ask someone who is more confident to look at it. If you attempt to make changes to your car without the correct knowledge, you may end up doing more damage than good.

The most common cause of a car not starting is a dead battery or a bad starter. Checking for these will also help you make sure that it is not an operator error. Before starting, if the car is automatic, check that the transmission is in park and your foot is on the break. If the car is a manual then check that the clutch pedal is fully depressed and the neutral safety switch is in place. If the clutch pedal does not full engage with the neutral safety switch then the engine will not crank. If your car is one that does not start with the seat belt unlatched then make sure that the driver’s seat belt is fastened. Insert the key fully, turn it to the one position and give the steering wheel a quarter turn in either direction.

In order to check for a dead battery test the wipers, radio, headlights and heater fan. If none of these are working then it is a sign that you have a dead battery. You should then check the connection at the battery and at the starter. To check the battery connections open the hood and look at the terminals. If the connector is loose enough to move, it is likely to have a bad connection. Any corrosion may also stop the car from starting. Follow the battery cable to the starter and check that the connection isn’t loose. If there are any stuck components, lightly tap the outside of the starter with a hammer. If all the battery connections appear fine, then you may need to consider jumpstarting your car.

No idea man..I have one 06 sienna and I already changed  3 times..battery..
Its only 38000 miles..

Its probably your security devise, Mine acted up and I ended up changing the alternator, I had no clue it was linked to my security  devise. Anyways there is a recall on the 1998 sienna for the Security system (google) you will find it.

Take your battery and alternator to a local auto parts store to get them both tested. Your battery may not have enough power to start your car, or your alternator may be bad as well. The alternator recharges your battery as you drive, whereas the battery mainly starts the car when you crank the ignition... They work together so if one is bad the other won't work right either.... Another possibility altogether is that your fuel pump may have went out. When you try to start your car, can you hear a "humm" near the rear of the car? Listen closely, try putting the key in the position *just before* you crank it, the "on" position. If you don't hear any buzzing noise (it will last for a second) then the fuel pump could be bad. I hope this helps!

Sounds like a dead battery or the cables are corroded and aren't getting a good connection to the battery.Check to see if one or both of the cables are loose. If so, tighten them. If they look corroded then loosen the cables and take them off the battery posts, then clean them good with a wire brush if you have one. "Clean the posts also". If you don't have a wire brush then use some baking soda and water to eat away the corrosion or a coca-cola. Put the cables back on and tighten them down. If you still have the clicking noise, you probably need a new battery.

I have a Sienna 2004 when I start in the morning or after a gap of 30 minutes or more during any time of the day that gives me very a wired sound once it is started the engine sound is very smooth if I start multiple times after that with a break of 5 or 10 minutes no wired sound any idea

Check battery  hook jumper cables up see if it does any thing