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This is most likely your "Valet" alarm disable switch. Use to disable your car alarm so you can keep your Alarm Fob and let a Valet, mechanic, friend etc. operate the car without the alarm being functional. If it is an after market alarm, consult the mfg's manual, if OEM contact dealer for operating instructions.
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.
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??
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?
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.
Replace the module
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