Welcome to the Forum. You'll have to upload the videos on a different site like Youtube and then post them here. What year Highlander?

 

My Highlander is 2024. I’m not sure how to upload a video on YouTube. I’m new to all this.

 

I’m a 67yr old widower, I live in Northern California. Spend a lot of time shopping for plants and flowers.
I love to garden.
the reason for me joining is my Highlander make a strange noise.
it happens after the car is parked and engine is turned off.
it’s still under warranty, Toyota has no clue what the problem is.
so I am reaching out if anyone has a strange noise, it comes from the right rear area.
I have several videos of the sound. Not sure how to add that.
help

Does the sound occur right after the engine is shut off or after an hour or so?

If the latter, it's the EVAP system purging. Very normal.

 

The sound happens within 3 minutes after the engine is turned off

 

The engine compartment will have some noise after shutting down. It is normal for newer vehicles.

The EVAP system is the easiest to hear. It’s like a small vacuum pump noise.

 

The engine compartment will have some noise after shutting down. It is normal for newer vehicles.

The EVAP system is the easiest to hear. It’s like a small vacuum pump noise.

The engine compartment will have some noise after shutting down. It is normal for newer vehicles.

The EVAP system is the easiest to hear. It’s like a small vacuum pump noise.

the noise is not coming from the engine, it is from the rear passenger side.

 

The noise comes from the right rear under the car. It’s exactly the same every time and always a few minutes after the car is parked and turned off.
Toyota has no idea as to what it is yet.
other than that noise the car is fine.

 

The noise comes from the right rear under the car. It’s exactly the same every time and always a few minutes after the car is parked and turned off.
Toyota has no idea as to what it is yet.
other than that noise the car is fine.

Normal, it is the EVAP purging air out of the system. Does it have a motorized hum sound? Then this is it.

 

Try uploading the vids to YouTube or Vimeo then share the link?

 

I have no idea how to do either. 😬
I have had several mechanically inclined male friends listen to it. No one has a clue.
neither does Toyota. Next step is they keep it next week and try to figure it out.

 

Only other thing is if that model has “rear” AC. Since that is where the Ac components are at for the rear AC.

 

The third row bench seat there is a vent on each side on the top. I never use the rear ac only the front Ac.

 

Does it happen when you put the car in park but keep it running? It could be the rear parking brake...they tend to squeak for about 1-2 seconds during activation. If Toyota dealer is going to have the car to check, have them check the parking brake operation and lubricate the parking brake slides.

 

No, the car is in park and turned off a within less than three minutes it happens.

 

The tailpipe is on that side of the car back there. Could it be metal popping as the pipe cools? My exhaust systems always make ticking or popping sounds while cooling down after turning the car off.

Odds are that what you're hearing is normal and not a sign of a problem. We're just trying to figure out exactly what it is.

 

I hear the popping noise from it cooling down. This is a quick crank sound that only last about a second.

 

Yes, these noises are normal....don't fret over them! Modern Toyota's have 30+ computers so lots of things normalizing and doing things even when the vehicle is turned off. If you Highlander is a Hybrid, there's even MORE noises.
Many sounds can come from metal cooling down after being out hot weather and, again, this is normal. My daughter used to have a Suzuki car and it had aluminum heat shields all around her tailpipe and those things would make quite a racket whenever she parked. (So much so that I had to take her and the car to my mechanic to get it on the lift to show her.)
Congrats on the Highlander....GREAT vehicle! Just don't neglect the oil changes every 6-months or 5,000 miles, whichever comes first and she'll last for many years.

 

The problem with my Highlander, it’s the Electronic Parking Brake System. It’s re-engaging after I’m parked and engine is off.
I don’t park on any incline or hills. Never have.
It’s normal for this to happen when the car senses it’s on an incline or hill. The fact is no other Toyota makes the loud noise mine does.
So now my Dealership say everything is fine.
Cooperation says we’ll start a lemon law case.
I just want my car fixed.
This is my fifth Toyota in 30 years.