Question about 2000 Hyundai Sonata

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Alarm won't turn off

I had to jump start my battery on my 2000 Sonata and now the alarm won't shut off. It keeps going off while I am driving. I found the kill switch but it still won't turn off. Help!

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  • mcdemers Jan 05, 2009

    My alarm on my 2000 sonata wont turn off either..can't drive the car as every time we reconnect the battery it goes off!!

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There is a silver toggle switch on the lower dash on the left side...it's called a "valet switch" shuts the whole system off!! Took me 3 months and 100's of calls to dealers etc....lol

Posted on Jan 05, 2009

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My 2012 hyundai sonata battery will drain dead after 2 days when I don't start it, what could be the problem? I have to jump start it and if I drive it everyday its fine.


it can be a number of problems one can be you have something is staying on it can be a light in the boot,you alarm is wired wrong or a radio is not off or it can be the battery no good. By jumping the car with a jumper leads can damage the battery, or you alternator is not charging good. First to check your alternator you will need a volt meter and place the negative from your meter to the negative of the batter and the positive to the positive and start your car. If the reading is 14.3 V to 14.8 V your alternator is good than the problem it can be any of the other things that I indicated

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2004 Hyundai Elantra won't start, emergency flashers keep blinking, can't shut off, lights dim, can't jump start, clicking from under dash from relays. What could it be?


The 'Keyless Entry & Burglar Alarm System" is activated. You must 'Disarm' the system using the Keyless Entry Remove (Key Fob) to "Reset" the system. The reason the engine won't start is due to the burglar alarm - it has a "Starter Kill" circuit which is activated when the alarm is activated. The alarm must be DEactivated to DEactivate the 'Starter Kill' circuit.
Another way to start the engine is to get in the car, put the key in the ignition and turn it to 'ON" and wait 3 to 5 minutes until the emergency flashers stop/turn off. Afterward, you should be able to start the engine. NOTE: This does NOT reset the burglar alarm. It will go off again when you enter the vehicle without using the remote/key fob.

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I have a 1999 Acura and my wife is trying to change battery for me while I am deployed. The alarm keeps going off and the remote will not shut the alarm off. How do I change battery and keep alarm from...


the easiest way might be to use a set of jump start leads & connect them to the new battery, then to the battery leads of the old battery before you disconnect them from the old battery,then remove the old battery & fit the new one being careful not to dislodge the jump leads then put the battery leads on the new battery.....hope this helps......cheers.

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I have a 2003 hyundai sonata and i dont have the remote for the stock alarm. My alarm keeps going off and my car wont start. I bought a new battery and even tried the key in the door still no luck.....


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1. When the alarm goes off, get into the vehicle and insert the ignition key into the ignition.
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3. The engine should then start using the ignition key.

If this procedure doesn't work, the problem will need further diagnosis by a qualified/certified Hyundai Service Technician.

Hope this helps

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Lights come on. I hear one crank but car won't start


Will the wipers work with the key in the run position? If not, it's the battery. Try a jump start. If the battery's ok you need to measure volts and amps at the starter to check for clean connections and internal failures.

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keep putting the earth on and off it might take a lot of times to cause it to reset you need charge in the battry and has to be done fast till you here a chime

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well then I would disconnect the power to the alarm

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One word:

Dealer.

Next time just disconnect the battery until you get it towed as this is a warranty item. I'll bet some wondered if this was a prank question like I did, right?

Nov 17, 2008 | 2006 Hyundai Sonata

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