Driveline coasting sound

Whenever slowing down, coasting, a rythmetic (driveline?)sound appears at 15mph down to 12 mph. Anyone else notice this or have ideas?

 

I have witnessed this recently on mine when slowing down and turning left on the street I live on…about that mph you stated as well. Mines a ‘22 essentially stock with 11k miles

 

So I had something similar when I first got my truck. Noticed it right away when pulling into my parking garage at work. Cadence appeared during low speeds and would be rhythmic. Would go away at higher speeds......ended up being that my rear axle was out of spec and needed to be replaced. According to the tech that they flew in to diagnose, this was the first tundra that he had seen at the time with the issue, but it was known with tacomas. They replaced the entire rear axle assembly and hasn't been an issue since. Just turned over 80k miles.

 

Was about to make this a post myself! YES SIR!.....from about 12-16MPH (specially when decelerating) my 2023 Tundra Crewmax Platinum 4X4 makes a distinct rhythmic sound...sounds like the driveline. Took it to my Toyota dealer and rode with the Tech who also confirmed the noise!.....Got a call back a few hours later and was told the noise is NORMAL....A Toyota Master Tech took over on my truck I guess and told me it's basically a deloading of the driveline at that speed. They also told me that the 3 other Tundra's on the lot make the same noise. So then, still not convinced....I went and test drove a brand new Tundra and low and behold it makes the same EXACT noise. So they are either all faulty or they are truly "Normal"....Its just suspiring to hear since the truck is FLAWLESS other wise. Not a squeak or rattle anywhere. Truck is super refined other wise....

 

I notice the same sound. Mostly in my neighborhood when coasting under 25mph and coming to a stop. I don't feel anything, but I can hear it with the windows down.

My initial thoughts were: 1) odd exhaust drone 2) tire noise 3) rear axle hum

Edit: 2023 Tundra Limited TRDOR non-hybrid

 

Do you guys own hybrids?

 

Mine is not a hybrid.

 

Mine is not a hybrid as well.....

 

I’ve never heard it so I was wondering if it was a hybrid thing since they have some simulated noise added at low speeds.

 

it is a definite "whomp....Whomp....whomp" sound that is rhythmic and it happens between 12-17ish MPH, specially when decelerating....completely does not make the noise when going slower or faster than those speeds. I tried getting a video/audio of it but its hard to make out.....I also first noticed the sound with all the windows down. With the A/C on and or music playing even low, you cant hear it. Again its not a terrible sound...Just surprising given the overall refinement of the truck.

 

Not “normal”. Time to elevate to regional