Ok...son locked his keys in his car, 03 accord exl 2 door coupe, and I got in thru the passenger side window with a coat hanger. Alarm goes off. Car was starting fine but could not reset the alarm because his drivers side door lock is broken and has no fob. No passenger side key lock. I messed with the hood latch wires, and pulled the instrument cluster out hoping to figure it out. Now the car turns over but won’t start. So question is, how do I reset/disable the factory alarm without the key/ door locks, and any suggestions as to why all of a sudden it stopped starting? Thanks in advance.

 

You need an original key with fob made to turn the alarm off. You should still be able to start the car with the valet key though.

I had a friend with an 03 and the alarm would not reset. The lights flashed every so often (he unplugged the horn). He was still able to start the car. He went and got an original key made with fob and everything worked good after.