Our used 2016 LX HRV just had an alarm/remote problem also. The alarm went off one evening.

In our case, the primary remote was failing. It was not dead, the battery in the remote was fine, but the remote would not do anything except the LED on the remote would come on and stay on when a button was pushed.
The 2nd remote worked fine.
For some reason the failing remote was setting off the alarm.
A replacement remote by the Honda dealer fixed the issue.

Here are the steps I took while diagnosing the issue:

1. Check the battery voltage with the vehicle off. Should be close to 12V.
2. Check each door, rear hatch and hood. Open and close each numerous times while watching the info Led in the dash.
3. Check both remotes for proper operation.
4. If you have a remote starter or aftermarket alarm, check if the remotes for them are all working correctly.
5. If you have any aftermarket devices plugged into the HRV, remove them.


If all checks ok and alarm is still going off, then the Honda dealer is the best choice. They can review a log of the alarm module with the Honda diagnostic tool (HDS) to see if one of the door/hatch/hood sensors is failing.
The HRV service manual makes no mention of shock sensor for these vehicles. Our 2016 LX HRV definitely does not have a shock sensor for the alarm.

Just my suggestions. Hopefully something simple like our issue turned out to be.

 

My HRV is doing that too. Idon't know if its the FOB or the alarm itself but it usually alarms very early in the morning or the temp goes below 50 degrees in the morning. Please advise?

 

A good way to find out if it's a key fob/remote that's acting up is to put them in a tin can or metal container away from the car.

 

I have had the alarm go off for no apparent reason on separate occasions several weeks apart. I think I worked it out that it only happened when I got home, owned the tailgate and locked the car by pressing the lock button on the tailgate. Could it be the sensor on the tailgate latch that also switches the boot's light on? I checked that the light went off when the tailgate was closed, it did and I gave the latch a good dose of WD40. It hasn't happened since, but time will tell.

 

This is a known issue with the hrv. If you’re experiencing this call your dealership it should be under warranty. Basically there was something installed incorrectly during the vehicle construction that allows water to seep in the trunk and it causes an issue with the latch too (you’ll likely experience the latch sticking when you try to open the trunk). They need to replace the motor and the latch. Good luck.

 

My daughter has a 2016 HRV. The alarm keeps going off randomly and if undetected will kill her battery. Honda said her alternator and battery are fine. She can hear a clicking also like her car is trying to start and dash lights going off even if the alarm isn't going off. Did you have the dash issues? Do you happen to know the part number? The car has 59k miles on it and they blame it on the fact it's 10 years old.