Original Toyota alarm. Lock the doors with the key fob and walk away. My wife claimed it happened a couple of times and i was suspect.... then it happened to me x2 (likely what i deserve for not believing my wife). The first time it went off, I was at the post office and lost my place in Covid-19 line when i left the line to turn it off the alarm (horn honking, lights flashing). The second time it sent off, i just let it go and stayed in line. Local Toyota dealer can't recreate the problem. We will see if it continues.
I didn't mention it earlier, but the HVAC system freezes when first engaged (while the clicking/knocking is occurring upon start). I thought it was due to the clicking sound. After about 5 min driving, all I can do is "auto" HVAC and the buttons are unresponsive. Toyota dealer says I've got a bad HVAC control module, which they are replacing under warrantee (I got sucked in and bought a comprehensive used car warrantee, now feeling a little less suckerish if that's a word).
Elf issue resolved. When i took it in to Toyota for regular maintenance a month ago, they said it needed the cabin filter to be replaced desperately. I'm somewhat handy, so I said no thinking I'd address it at some future time myself. Then the clicking started. I did some internet searching and thought the filter was the culprit, more likely that something was blocking the door. I followed the instructions on
www.carcarekiosk.com/video/2013_Toyota_Land_Cruiser_5.7L_V8/air_filter_cabin/replace and was very careful to replace the filter the exact same way it came out, but the clicking continued so i took it in. Apparently the clicking/knocking means that the guy servicing the car didn't put the old dirty filter back the right way and the recirc/fresh control door was being blocked or impeded somehow. They also fixed that for free.
now all i have to do is capture that elf that's triggering the alarm!!
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