Problem Description and Possible Solution
The factory installed alarm system may sound for no apparent reason. A revised hood latch assembly is available which should correct this concern.
Problem DataRepairPal Verified
Average mileage: 51,180 (3,500–235,000)
47 people reported this problem
Alarm goes off for no reason. Keys are not anywhere where the alarm button might get pressed by accident. Started happening 5 days ago, is now happening about once or twice every day.
Alarm goes off in the middle of the night and I key fob will not shut it off. Last night it happened 3 times and I have the horn going off in my head. This should be a recall as I fell if a security system fails what can a consumer do other then go to the dealer. Toyota must know they have issues and should come clean and admit this a recall situation.
same problem here but the car has to be locked for the alarm to go off. if the car is left unlocked I to not have a problem
Not yet fixed. When parked, engine turned off and locked, factory alarm starts at random times. It either stops at end of sequence, or when I turn off with my key. This may be repeated many times once it starts. My neighbors are complaining about the noise and worry created by a beeping horn.
alarm goes off for no reason
Alarm sounds, periodically, for no reason. Happened 3 times at dentist office; two weeks later at home, two days later at home again. Frustrating.
Reported problem earlier. Had the hood latch assembly replaced which cost $305. Have now have filed a claim with Toyota Customer service based on the recommendation of my Toyota dealership. Apparently the dealership is seeing quite a few of these repairs.
Alarm in Toyota Highlander went off in driveway late at night (but never when garaged). Same thing in Yakima, Wa when parked on the street. Problem subsided for a year but began again when in Yakima, at two locations (but again never when garaged).
Alarm goes off randomly! Very loudly!
4Runner alarm goes off each day during the day.
Alarm sounding every day for no reason
Horn/alarm randomly goes off when parked, at home or other locations. Use fab after exiting or inside door to lock car before exiting. 1st attempt at dealer to fix could not find problem. 2nd idea was to change key fab battery (diy). 3rd attempt, dealer suggested wiring is fine, but car battery low. They changed battery & problem happened again 15 & 45 minutes after arriving home from dealership.
Car alarm started sounding off randomly at 10k miles. I thought it was bc my alarm was sensitive so I took it to Toyota. They lowered the sensor. While on a roadtrip 2 months later the alarm kept going off again in the middle of the night. Took it back to Toyota and they said they didn't see anything wrong with it. I've had the car for over a year and a half now and it still goes off randomly just like tonight. This shit is irritating! I'm definitely calling Toyota tomorrow.
Alarm goes off randomly when car is locked.
Car alarm started going off randomly but seldom about 2 months ago. This week it started doing it a couple times a day and now has escalated to every few hours. So far, it hasn't happened in the middle of the night, but I am afraid to see what tonight holds. Taking it in Monday to dealership.
I have problems with the alarm and the doors, sometimes do not lock. at my local dealer, they repair it, but twoor three months later the problem start again.