Hello all experienced/ auto enthusiast,
I am in need of your expert advise to solve this misery that has plagued my car
Car: 2007 Lexus RX350, AWD

Symptoms and changes carried out
1. Slight buzzy cyclic sort of vibration (like vibrating phone) felt on steering wheel and floor board, gas pedal.
2. Not the shaky vibration you get from unbalanced tires.
3. While accelerating from stop, this buzzy feeling is felt ,slight shudder, and hesitation (like car is reving to move to 2ng gear and same time hesitating, say 2 secs)
4. Buzzy feel is constant on varying speed.
5. More pronounced on load - carrying passengers
6. Transmission shifts fine, and no slips experienced - Had changed tranny fluid in January with Toyota WS
7. Mechanic replaced spark plugs changed with new Iridium Spark Plugs.
8. Mechanic loosened and checked U joints , Front , rear - they are still intact.
9 Bought and installed 1st grade tokunbo CV axle from a renowned dealer at Ladipo (left and right). Even regressed , no tear on boot
10. The only code is a check engine + VSC : code found is P0137 HO2S Circuit Low Voltage Bank 1 Sensor 2
11. This symptoms has been there before months before the code surfaced, so I don't it has anything to do with the O2 sensor.
12. I tried taking my foot of the gas pedal while accelerating at high speed and still felt the symptom. So it may not be tranny, but something rotary by nature , just a thought!!

Its driving me crazy, and now very confused. I am somebody must have experienced this before and can advise

I am thinking of MAF sensor, but would that cause all these symptoms ?

If you are in lagos. Bring it in to multi autolab for a physical inspection. 08165520837 or 08156087872