My car was in the garage.The alarm went on and i turned it of but then I could not start it

You have big problems, thank your friend and take it to the delaer.

this is a test, please ignore

if its an alarm whit a key,you can turn off the alarm.or you can let,
adjust the alarm in garage

Put key in ignition, turn all the way forward, but not trying to start. Let alarm cycle 2 times, when it stops the 2nd time, remove key and alarm should be disarmed. This will only work if it is a factory alarm.

Sounds like you have a key without the chip in it. Replacement keys without the chip will only unlock the doors and will activate the theft alarm when you start the vehicle.

start the car. if that dose not work remove ground form battery then after it stops put ground back on that will reset the alarm.

try to put the key in the ingnition and turn it to the on possition and walk away for about 15 min come back turn it to off and see iff it starts

Take it to a competent electrician -- it's obvious the folks at the garage don't know what they're looking at.

the battery says 12 volts but may be dropping to 4 or 5 under a load...i would suggest jumpstarting the car and see what happens.the battery should read in the high 12 volts and not less than 9.5 under cranking. the dash lights go out on your car when starting,and the alarm will go off ,and disable the ignition if the voltage is too low in cranking the car because the computer will shut it down and activate the anti theft.....check your battery posts are tight. best of luck

get in truck shut door . . . turn key to acc position. . .push alarm button on dash near ECT button. turn key back off .. . then to the acc position again. . then push button back like it originally was. this should help i had the same problem . only i was in the middle of the woods with no cell phone signal!