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Will the alarm system on an 03 Hyundai sonata prevent the car from starting?

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  • 43 Answers

Yes it absolutely can unhook your battery for about 10-15 minutes let her get back up if it still doesn't start you'll have to take it to the dealer they can reprogram it for you

Posted on Feb 08, 2014

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Posted on Jan 02, 2017

  • 4 Answers

SOURCE: my 2006 hyundai sonata alarm keeps going off

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?

Posted on Nov 22, 2008

  • 1 Answer

SOURCE: car alarm preventing car from starting

I am having trouble also but I need to know how to disconnect the alarm. I would appreciate it if you could help me out seeing that you have disconnected yours. Thank you

Posted on Jun 04, 2009

ghost4548
  • 776 Answers

SOURCE: key is stuck in ignition in 2007 hyundai sonata

The problem is in the tumbler(s) inside the assembly. Before you do anything, try penetrating oil to see if that works... otherwise, the entire assembly will need to be replaced.

Posted on Jun 28, 2009

SOURCE: Hyundai Sonata 2003 Car starts then dies immediately :(

dear friend-it appeares that you have no feul pressure,check pressure,feul filter,feul system,

Posted on Jul 21, 2009

  • 10 Answers

SOURCE: disarm alarm on a 2004 sonata

If you use your keyfob to lock the doors, it will activate the alarm, and you will need to unlock with the keyfob. If you lock the doors with the lock button on the inside of the door, it should not activate the alarm.

Posted on Dec 22, 2009

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How do you get a 2004 hyundai sonata to start after new battery was installed causing the alarm to keep going off.


have you tried locking and unlocking the car with the remote. How about locking and unlocking the drivers front door with the key?

Oct 02, 2015 | Hyundai Motor 2004 Sonata

1 Answer

When i try to start me 2008 sonata the alarm goes off and the engine will not turn over. what can i do?


Your Sonata is equipped with a "Keyless Entry & Burglar Alarm" system. When the Burglar Alarm is activated, it KILLS the starting system through the used of a relay called the "Burglar Alarm Relay". This mode prevents engine starting with the key.
Solution #1
Disarm the system with the Keyless Remote (key fob) If you don't have this remote (or its battery is dead) replace the battery & try disarming again.
Solution #2
Enter the vehicle & insert the key in the ignition and turn the ignition switch to 'RUN'. Wait 3 to 5 minutes until the alarm stops. You should then be able to start the engine.

Have a qualified/certified Hyundai Service Technician properly diagnose this issue.

Sep 07, 2011 | Hyundai Motor 2004 Sonata

2 Answers

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.....


The 2003 Sonata is equipped with a 'starter KILL' burglar alarm system with disables the starting system (using a N/C 'contacts' configuration instead of a N/O contacts configuration). N/C=Normally closed, and N/O=Normally open contacts. When the alarm goes off with a MY Sonata, the only way to DISARM it is with the key fob (remote) originally programmed for it (unless you purchase a new remote & have it programmed for the vehicle at an authorized Hyundai Service Department). NOTE: So long as the keyless entry & burglar alarm system is functioning/operating normally, the alarm will keep going off and the STARTER KILL function will still prevent you from starting the vehicle. One option is left without purchasing a new remote and having it programmed.
1. When the alarm goes off, get into the vehicle and insert the ignition key into the ignition.
2. Turn the key to the 'RUN' position (NOT the ACC position) and wait for the alarm to STOP (usually about 3 to 5 minutes).
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

Aug 27, 2011 | 2003 Hyundai Sonata

1 Answer

How to shut the alarm on 2005 Hyundai sonata


no valet switch,you will have to replace batteries/keypad to make it work and you CANNOT bypass the system......otherwise whats the point in fitting it??

Jun 26, 2010 | 2005 Hyundai Sonata

2 Answers

03 hyundai sonata air bag light stays on


I read on another site to check the "yellow" connector under the passenger seat. Connector ncould be loose or wires that go in the connector may be loose.

Jun 11, 2010 | Hyundai Motor 2003 Sonata

1 Answer

My 2002 sonata alarm wont shut off and my keyless wont stop it and the car also wont start with the key either


When the alarm is activated, there is an Anti-Theft device (Starter Kill Relay) which prevents anyone from starting the engine using the key (about 5 minutes). If you place the key in the ignition and turn the key to the "RUN" position, wait 5 minutes (approx), the engine should then be able to start. If not, the problem may be the ETACS (Electronic Time & Alarm Control System) module. If it does start, the problem may simply be that the battery in the keyless remote is weak/dead, or the remote needs to be programmed again for that vehicle. Only the remote can 'DEACTIVATE' the alarm. Best solution, take/tow the vehicle into a Hyundai Service Center (dealership), pay the diagnostic fee. They will tell you EXACTLY what the problem is and what's needed to fix it (parts, labor, tax, time-frame, etc.).
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Jun 14, 2009 | Hyundai Motor 2002 Sonata

1 Answer

My 2006 hyundai sonata alarm keeps going off


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

2 Answers

Disarm alarm on a 2004 sonata


welcome to the modern world. If you forget to arm it, it does it by itself.

Its part of immobilizing, to prevent car theft which costs us all

Sep 10, 2008 | Hyundai Motor 2004 Sonata

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