[cn1028]

Has anyone experienced their alarm going off randomly?
Went to check the first time and nothing was wrong. The second time, I opened the door and started the car. Nothing appeared on the dash.
By the third time I even opened the hood but that didn't fix the problem.

[LexxM3]

Complete guess, of course, but do you have something plugged in or attached to power somewhere that is not powering down correctly after the car is locked?

For only an example, MHD Black WiFi OBDII interface when left plugged in into the car's OBD port doesn't power down to low current state properly and causes Gxx alarm to trigger a few minutes after locking due to detected parasitic current load. Maybe you have something like that going on.

[cn1028]

Originally Posted by LexxM3

Complete guess, of course, but do you have something plugged in or attached to power somewhere that is not powering down correctly after the car is locked?

For only an example, MHD Black WiFi OBDII interface when left plugged in into the car's OBD port doesn't power down to low current state properly and causes Gxx alarm to trigger a few minutes after locking due to detected parasitic current load. Maybe you have something like that going on.

No I don't.
I was able to schedule an appointment for tomorrow.

[BBHMM]

Originally Posted by LexxM3

Complete guess, of course, but do you have something plugged in or attached to power somewhere that is not powering down correctly after the car is locked?

For only an example, MHD Black WiFi OBDII interface when left plugged in into the car's OBD port doesn't power down to low current state properly and causes Gxx alarm to trigger a few minutes after locking due to detected parasitic current load. Maybe you have something like that going on.

Exactly same was with mine MHD black adapter was left in OBD2 and car was randomly alarming

[Protocol_10]

This probably isn't the case for you, but my alarm has gone off because the keys were in my pocket & my thigh pressed the alarm button. Happened to me a couple of times, so now I put my keys in the cupholder )

I hope the service dept is able to fix this for you

[RhinoComp]

Originally Posted by LexxM3

Complete guess, of course, but do you have something plugged in or attached to power somewhere that is not powering down correctly after the car is locked?

For only an example, MHD Black WiFi OBDII interface when left plugged in into the car's OBD port doesn't power down to low current state properly and causes Gxx alarm to trigger a few minutes after locking due to detected parasitic current load. Maybe you have something like that going on.

Sorry to revive an old thread, but I appreciate this “complete guess” because my 2019’s alarm just randomly started going off. Took stuff off the rearview mirror, did everything I could think and was about to call the dealer. Then saw this and realized I’d bought an MHD Universal WiFi OBDII adapter yesterday and left it plugged in. Didn’t go off last night because I parked in the garage and left it unlocked so at the office today was the first time I’d locked the vehicle with it plugged in. Sure enough, went out and removed it and the problems are gone.