Car alarm triggered by tire pressures??

[Maverick]

'21 Aviator. Hope someone can shed light on this. Had tires rotated (front to back), but the tech didn't readjust the tire pressures, so the front tires were higher than the rear. Next stop, the car alarm went off 6 times while parked at that location. No one near car. Key fob sitting on the table, untouched. Returned to tire tech to redo the correct tire pressures. Seems to have solved the alarm issue. So does the alarm get triggered by sensing the tire pressures as mentioned?

 

[rjabend]

'21 Aviator. Hope someone can shed light on this. Had tires rotated (front to back), but the tech didn't readjust the tire pressures, so the front tires were higher than the rear. Next stop, the car alarm went off 6 times while parked at that location. No one near car. Key fob sitting on the table, untouched. Returned to tire tech to redo the correct tire pressures. Seems to have solved the alarm issue. So does the alarm get triggered by sensing the tire pressures as mentioned?

I have had low pressures but never an alarm. Might be due to an update??

 

[bbf2530]

'21 Aviator. Hope someone can shed light on this. Had tires rotated (front to back), but the tech didn't readjust the tire pressures, so the front tires were higher than the rear. Next stop, the car alarm went off 6 times while parked at that location. No one near car. Key fob sitting on the table, untouched. Returned to tire tech to redo the correct tire pressures. Seems to have solved the alarm issue. So does the alarm get triggered by sensing the tire pressures as mentioned?

Hi Maverick. No, the perimeter alarm system, and/or interior motion sensors, are not triggered by the tire pressures and/or TPMS system.

Not sure what you meant by "Next stop..." though. Where was the "Next stop..."?

I realize you stated no one was near the vehicle, but wherever the "next stop" was, is it possible the interior motion sensors were triggered somehow? A pet inside? Windows open and someone/anyone was reaching in etc.? Just throwing out ideas here.

Keep us updated and good luck.

 

[dave843]

Could it be the inclination sensor? Maybe with the wrong tire pressures, it was at just the wrong angle and was triggering the sensor?

______________________________

 

[peterk9]

Could it be the inclination sensor? Maybe with the wrong tire pressures, it was at just the wrong angle and was triggering the sensor?

Welcome to the Forum Dave,

I did a 'Find' on the word "inclination" in the 2021 Owner's Guide and came up with 0 results. I don't know if his vehicle has such a feature but I doubt any such small variations caused by tire pressures would affect a feature like that.

Peter

 

[tgara]

I think the tire issue and the alarm issue are unrelated.

 

[Maverick]

Hi Maverick. No, the perimeter alarm system, and/or interior motion sensors, are not triggered by the tire pressures and/or TPMS system.

Not sure what you meant by "Next stop..." though. Where was the "Next stop..."?

I realize you stated no one was near the vehicle, but wherever the "next stop" was, is it possible the interior motion sensors were triggered somehow? A pet inside? Windows open and someone/anyone was reaching in etc.? Just throwing out ideas here.

Keep us updated and good luck.

Next stop was lunch at a diner. Could see the car through the window when the alarm went off roughly every 7 minutes. No one or animals anywhere nearby. None in car. No windows open. No electrical signals coming from the restaurant.

 

[Maverick]

Troubleshooting: The tire pressures are now correct. Doubt that had anything to do with it, other than that is when it started doing this. Fact: the alarm goes off when the car is parked, locked with no-one in it about every 7 minutes. When we are sitting in the car (running or not) it does NOT set off alarm. Seat sensors?? Called a couple of dealer service departments. They both said disconnect the battery, let sit 15 min. and see if that fixes it. Did that several times, no success. Had two different sources plug in the computer system checker under the dash. NO faults! Until I can get an appt. next week at the dealer, the only solution is to leave the battery disconnected. Reconnect if we need to make a trip. Stay tuned.

______________________________

 

[bbf2530]

Next stop was lunch at a diner. Could see the car through the window when the alarm went off roughly every 7 minutes. No one or animals anywhere nearby. None in car. No windows open. No electrical signals coming from the restaurant.

Hi Maverick. Out of curiosity, has it reoccurred since that one day?

The alarm is not triggered by the tire pressures and/or TPMS system. It should not be doing that. It should not trigger unless one of the sensors are set off due to a door, trunk, hood being breached, the interior motion sensor being set off, other perimeter sensors being set off etc. And while the system is activated, obviously.

Yours is being set off for seemingly no reason, and this could be due various issues, so your best course of action would be to make a service appointment to have it properly diagnosed and repaired. Or have it looked at on your next routine maintenance service visit.

Let us know how you make out and good luck.

EDIT- Our last replies crossed in the mail, so I did not see your new information until after I posted.

 

[peterk9]

Troubleshooting: The tire pressures are now correct. Doubt that had anything to do with it, other than that is when it started doing this. Fact: the alarm goes off when the car is parked, locked with no-one in it about every 7 minutes. When we are sitting in the car (running or not) it does NOT set off alarm. Seat sensors?? Called a couple of dealer service departments. They both said disconnect the battery, let sit 15 min. and see if that fixes it. Did that several times, no success. Had two different sources plug in the computer system checker under the dash. NO faults! Until I can get an appt. next week at the dealer, the only solution is to leave the battery disconnected. Reconnect if we need to make a trip. Stay tuned.

Have you tried turning OFF 'All Sensors' setting or locking the vehicle using the Lock/Unlock button on the inside driver's door? Another thing you can try is to leave a spare fob in the vehicle and use the Securicode keypad to lock up.
None of these are a fix of course but interesting to see if any of them work to stop the alarm from going off.

Peter

 

[Maverick]

OK, people. Problem solved. First, thank you to all of you for thoughtful suggestions to resolve this. Let's see if you can figure it out. Clue: The car is just two years old, along with all its accessories! No one came up with the correct (SIMPLE) solution, including two service tech's, who should know better. But, just maybe, they want to get you into their service dept. HMMM? Anyway, it came to me in the middle of the night, since the alarm was now going off in 3 min., then 1 min., not 7 as before. Get it yet? OK, the key fob is also 2 years old! How long do those batteries last. Google says 2-3 years! Located our back up fob and presto, no more alarms. Battery needed replacement. File this one away in case it happens to you.
Maverick, out.🛥️

 

[inmanlanier]

Interesting. Peterk9 - you're the manual reviewer whenever something like this happens... did you come across this searching/perusing the manual

______________________________

 

[peterk9]

Interesting. Peterk9 - you're the manual reviewer whenever something like this happens... did you come across this searching/perusing the manual

I'm not sure which post you are referring to but I've found that many questions asked here and in the Explorer forum have answers that can be found in the Owner's Manual. I have many of them downloaded to my computer for handy reference. It's easier to use the "find" command on the pdf manuals than to thumb through them.

Peter

 

[inmanlanier]

I was poking fun at you since we've bantered back and forth about the manual quality (I think it's less than desired to some degree). The perhaps hidden complement there was that many times on your own you've without prompting done the manual search on a given topic and reported your findings. I thought we might be lucky in this instance with you having done said research (I could, but am not as altruistic this time - the tidbit is logged away in my RAM for now - likely disappears in 24 hours to where I'll need my search the next time!).

 

[tgara]

I'm not sure which post you are referring to but I've found that many questions asked here and in the Explorer forum have answers that can be found in the Owner's Manual. I have many of them downloaded to my computer for handy reference.

Windshield washer fluid brands too? 😙

 

[peterk9]

Windshield washer fluid brands too? 😙

Specifications are listed for that as well. Beginning to wonder if you have actually read the manual.

Peter

______________________________

 

[Maverick]

Interesting. Peterk9 - you're the manual reviewer whenever something like this happens... did you come across this searching/perusing the manual

No, didn't find it in the manual. Just deduced it from the continuing shortening times between the alarms-7 min, 3 min, 1 min. Somewhere, in the back of my mind, I seem to remember now somewhere I read about something similar and somewhere I heard that the dash display would indicate a low fob battery. Don't know where, but I never got any message. Actually, now that I think about it, we had a similar problem with a Lexus SUV we had many years ago. Not an alarm, but the car wouldn't start. New battery in the fob fixed it.

 

[Maverick]

OK, UPDATE. Turns out I was wrong on the key fob battery. That did not solve the alarm going off issue. At that point I already had a dealer appt. So, went to the dealer. Parked in the portico. Locked the car. Went in the office and as I was talking to the service mgr., BEEP, BEEP! I said, That's the problem, fix it. After wasting a trip there and back and back again the next day, the part they ordered came in. It was the right rear door alarm sensor. That was the culprit. Replacing it fixed the problem. Two years old, how ofter do you open the right rear door? No more BEEP, BEEP. BTW, in addition to the sensors on the four doors, the hood and hatch, there is a motion sensor inside the vehicle. Keep that in mind.

 

[Pioneer4x4]

OK, UPDATE. Turns out I was wrong on the key fob battery. That did not solve the alarm going off issue. At that point I already had a dealer appt. So, went to the dealer. Parked in the portico. Locked the car. Went in the office and as I was talking to the service mgr., BEEP, BEEP! I said, That's the problem, fix it. After wasting a trip there and back and back again the next day, the part they ordered came in. It was the right rear door alarm sensor. That was the culprit. Replacing it fixed the problem. Two years old, how ofter do you open the right rear door? No more BEEP, BEEP. BTW, in addition to the sensors on the four doors, the hood and hatch, there is a motion sensor inside the vehicle. Keep that in mind.

First, THANKS for the update!!!!
I hate when people post online about a problem, then you never hear back.
Second, interesting find, and I wonder how hard it was for them to diagnose it, or was it just "plug in, read logs, RR door triggered..."
Also the motion sensor is a delete item on a lot of 2023s apparently for other people reading along, some might not have it.

 

[inmanlanier]

BTW, in addition to the sensors on the four doors, the hood and hatch, there is a motion sensor inside the vehicle. Keep that in mind.

I'm reminded of this fact every time I briefly close the doors and lock them when I'm dropping the poodles off at the groomers. The puppy (14 months) is too wild to be able to take with the old gal (12 yrs) - so I typically take the old gal in first. By the time I come back out to get the little one - the car is alarming! Of course I have the system set up to prompt me on the display (to be able disable the interior sensor) - but you know how force of habit is!