How to stop my 2010 Hyundia Elantra alarm from keep going off at random?

SOURCE: how do you get rotor off 2003 hyundia elantra

hi from uk not sure if same as uk hyundai's but here goes ? if you remove wheel do you see two countersunk posi screws between studs that appear to hold rotor ?? if so then you will have to first remove the brake caliper assy by unbolting from the rear of caliper two 13 mm spanner/socket ? then you remove the two bolts that secure the carrier that the caliper bolts to 17 mm spanner/socket now you can remove the two contersunk screws then you may have to tap the rotor off the hub from rearuse a wire brush to clean up/away all rust/dust from caliper and carrier assys b4 refitting (take precautions from breathing dust) i assume you are fitting new pads ?? reassemble carrier then b4 fitting pads smear a light coating of copper grease on the rear of pad (metal side ) this prevents squealing on brakes then fully reassemble then b4 fitting wheel? bleed the brakee caliper a couple of pumps should expel dirty fluid then fit wheel carry out same proceedure on other brake assy as above fully then b4 you move car pump brake to ensure pedal is firm you will find that bleeding brakes will make pedal firmer as the old fluid becomes compressable due to heat/moisture absorbsion over time and heat from brakes is transferred to fluid via caliper piston understand?? that is why alway policy to bleed/flush brake fluid at least two yr interval this reduces spongy brake pedal hope this is all clear 4 you to follow best wishes for new year and hope you update on how you go on??

SOURCE: 2005 hyundai elantra alarm keep going off

check door switches,trunk switch,hood switch sounds like dirty contact after you set alarm if any of these contacts lose contanuity your alarm will go off alarm system thinks doors,hood,trunk has been opened

SOURCE: 2007 Hyundai Elantra Alarm keeps going off when it is windy

Go to the dealer and have them check the hood pin switch pad, there is a updated part that is longer to make better contact with the hood pin switch. Also, check the trunk lid stricker to make sure it is not bent, that has got me a couple of times.

SOURCE: car alarm going off too often

Interesting!... Did you bend the hood when you took the battery out? Here's a possible cause. On the right hand side of the engine compartment is a hood switch (part of the burglar alarm system.. here's a pic)
On the underside of the hood is a rubber button which depresses this switch when you close the hood. If it's missing, then the switch is not being depressed all the way (and can cause the symptom you are experiencing). OR, you bent the hood and the rubber button on the underside of the hood is not pushing the switch all the way down (a wind gust can lift the hood just enough to activate this switch) which sets off the alarm. Hope this helps.

SOURCE: Alarm keeps going off randomly

Is it going off for a reason? Is it because a sensor could possibly be failing and causing it to trip the system? Is it because sensitivity is adjusted wrong?

The easiest (depending on the system and what it is in) would be to remove the fuse from the alarm but then you will no longer have protection.

Best thing to do would be take it to a repair shop and have them troubleshoot it for you to minimize the aggravation.