2022 tacoma trd sport. braking on steep slopes. Slight jerks when slowing down.

Dear all,

I've been driving my new 2022 trd sport for 3 months. I noticed these:

1. When I brake while going down a steep slope, I sometimes can hear the engine starts a sudden humming sound, it's doing something as if it's trying to slow down the vehicle as well. Is that part of a safety feature new tacoma has? It feels just like when a jet plane lands, the engine does the reverse propulsion.

2. When I 'm not applying either the brake or gas pedal and let it slow down by itself, my truck has this weird jerk feeling I can feel? Is that a transmission issue?

Thank you guys for answering questions

 

Sounds like ABS/TC in both situations

 

I was thinking #2 was just the tranny downshifting.

 

And or axle wrap. Early tacomas including mine has the ubolts loose. It wasn’t torqued properly from factory.