Toyota Avensis III 1.8 2016 - Wierd noise while driving?

[genek13]

Hello Everyone
I have a wierd problem with my Avensis for last few days.
While driving (only driving) I can hear a humming noise - sounds like a propeller XD. This sound is noticable from 40 do 90km/h. In higher speed noise is less noticable due overall speed. Overall engine and gear box work completelly fine. I checked engine on hold - everything was fine (1000km ago I changed oil 5W30). CVT gear box oil was changed 1500km ago. One month ago both fron wheel bearing was changed to new ones. One thing worth to mention is that with opened window (in city) I can hear a loose metalic piece while breaking - this could be a problem with a front left breaking caliper because I notice this few weeks ago.
Below link to video, when I recorded while driving:
https://www.youtube.com/watch?v=V3419vXPYpU&ab_channel=MarekGendera

[UlleB]

Bad/failing wheel bearing?

[genek13]

Both front was replaced - one month ago. Maybe rear ones ?

[UlleB]

Sounds to me like something is messed up with either bearings or brake pads in the front. I would take it back to the shop who did the work. I doubt it's the rear but obviously I can't know for sure. It's a place to start the investigation at least.

[genek13]

I hope its a wheel bearing or brake pads instead some of CVT bearings...

[Mushu84]

go back to the shop that changed them and raise the issue they still should be under warranty 

[TonyHSD]

Yes , it can be wheel bearings or bad tyres too. 
Check bearings on each wheel, with car on stands and wheels of the ground, spin each wheel and place your hand on the springs, if you feel any vibrations and hear tiny rumbling noises this is faulty side. 
Tyres needs to have very equal wearing on the treads, with protection gloves glide your hand over the tyre and try to feel and different treads poke out , it will show bad tyre. 
Last check with engine in N rise RPM to 3000 and listen for the noises, to check for anything that can produce similar bad bearings noise, belt tensioner pulley, water pump, alternator. 
Good luck 

[Konrad C]

I think it's a wheel bearing or a tyre failing internally. I learnt the trick of find the offending wheel bearing by raising the car and spinning the wheel with my ear on the wing/wheel arch. Do this for each wheel and you will hear the offending wheel bearing, if faulty. The faulty tyre is a little more tricky, but if you have a spare, swapping each could help find that faulty tyre. Also increasing the pressure may help.

One other faulty could be the bearings in the differential, where the drive shafts connect. I get the impression the car must have been in water up to the hubs, if the bearings need replacing! 

[avetoy]

On 3/26/2024 at 10:47 AM, genek13 said:

I hope its a wheel bearing or brake pads instead some of CVT bearings...

Let's hope so. There are a lot of good advices above but I still want to tell my simple way to check if one of the wheel bearings is faulty...

Turn the steering wheel slightly left and right while driving. If the sound changes or disappears, it most likely is a wheel bearing fail.

[genek13]

Im back with some more videos. I put my car on stands as one of you adviced and noticed that one of the wheels has a problem with turning around. Seems nothing is blocking this wheel... any ideas (wheel was enough in air) ? 

Additionally I record humming noise from cabin - ignore beeping sound about safety belts (also ESP was turn off). Sound clearly came from the front of the car. In N or P position on wheels engine works fine.

 

[TonyHSD]

Spin by hand each wheel and see if resistance between L and R is the same. Sometimes one of the wheels can spin slower then the other ac a result of internal friction in the differential which is normal , however if you stop the faster spinning wheel by hand the other side should accelerate. What you are after is to check if brake callipers are working fine and no pads sticking onto the discs. Look for brake dust on the wheels better L and R, measure temperature after some drives it should be equal +/- 3C°,  anyway abnormal will point towards brake callipers. If they had not been cleaned and lubed recently it is a good idea to do so. However looking at your tyres I think they are the reason for any noises while driving. Are you gonna change to summer tyres soon? If yes don’t do anything furthest before you swap your tyres. 👍

[genek13]

2 hours ago, TonyHSD said:

Spin by hand each wheel and see if resistance between L and R is the same. Sometimes one of the wheels can spin slower then the other ac a result of internal friction in the differential which is normal , however if you stop the faster spinning wheel by hand the other side should accelerate. What you are after is to check if brake callipers are working fine and no pads sticking onto the discs. Look for brake dust on the wheels better L and R, measure temperature after some drives it should be equal +/- 3C°,  anyway abnormal will point towards brake callipers. If they had not been cleaned and lubed recently it is a good idea to do so. However looking at your tyres I think they are the reason for any noises while driving. Are you gonna change to summer tyres soon? If yes don’t do anything furthest before you swap your tyres. 👍

Tyres should be changed for summer type soon, but now I must deal with this humming noise, which is from gearbox I think (CVT K313) ... Car is on stands (check last video) and humming is same as car will be standing on wheels, so its not from any of the tyres.

[TonyHSD]

6 hours ago, genek13 said:

Tyres should be changed for summer type soon, but now I must deal with this humming noise, which is from gearbox I think (CVT K313) ... Car is on stands (check last video) and humming is same as car will be standing on wheels, so its not from any of the tyres.

These noises you are getting doesn’t sound too bad imo. If me I will change the transmission fluid with original Toyota ws oil and follow the exact procedure. Then keep driving the car until noises become more obvious or the transmission goes burst and replace with new. If not broken don’t fix it. That’s just me. 

[avensis_2018]

hi, about all those transmission fluid its just in your head, there is nothing to do with that, also you don't need to change it. its a life-time fluid and filter also, don't touch the CVT !

for a start i would buy brake cleaner spray, and finish it all on both sides brakes and calipers, clean it all from outside and from under the car inside the wheel to outside... and re-check it after.

 

 

[genek13]

7 hours ago, avensis_2018 said:

hi, about all those transmission fluid its just in your head, there is nothing to do with that, also you don't need to change it. its a life-time fluid and filter also, don't touch the CVT !

for a start i would buy brake cleaner spray, and finish it all on both sides brakes and calipers, clean it all from outside and from under the car inside the wheel to outside... and re-check it after.

 

 

The humming noise is from CVT. Look at below video, is more or less the same... Compare it to my last video from cockpit.

 

[genek13]

On 3/29/2024 at 11:38 PM, TonyHSD said:

These noises you are getting doesn’t sound too bad imo. If me I will change the transmission fluid with original Toyota ws oil and follow the exact procedure. Then keep driving the car until noises become more obvious or the transmission goes burst and replace with new. If not broken don’t fix it. That’s just me. 

I just came back from under the car and seems that humming noise is not noticable in this position, only from cockpit. So maybe its not a CVT indeed and something bad is happening with the wheel/steering system.

[avetoy]

One possible check you can do while under the car: listen to the transmission with a wooden stick, etc. Place one end on the gearbox body and the other end firmly against your ear. You can also use a stethoscope (if you have a doctor friend...)

Check also the driveshaft support bearing...

[avensis_2018]

Why you touch the CVT ftom the begining ?! How much oil you took out and how much you added ?

[genek13]

5 hours ago, avensis_2018 said:

Why you touch the CVT ftom the begining ?! How much oil you took out and how much you added ?

It was time to change the oil as recommended - first should be done after 90 000km (my was done after 105 000km). Fluid was changed dynamically (around 7 liters), so 100% new one (recommended by Toyota).

[TonyHSD]

56 minutes ago, genek13 said:

It was time to change the oil as recommended - first should be done after 90 000km (my was done after 105 000km). Fluid was changed dynamically (around 7 liters), so 100% new one (recommended by Toyota).

Did you get these noises after the oil change? 

[genek13]

3 minutes ago, TonyHSD said:

Did you get these noises after the oil change? 

Not immediately, after 1500 km. In same time I changed both wheel bearings in front because they caused humming noises while turning.

[TonyHSD]

2 minutes ago, genek13 said:

Not immediately, after 1500km

When changing the oil have you followed exact procedure as per repair manual ? There is a possibility air lock or something that went bad aftervt( oil change. I believe these transmission has specific procedure for drain and refill but not sure as I never worked on one. 

[genek13]

2 minutes ago, TonyHSD said:

When changing the oil have you followed exact procedure as per repair manual ? There is a possibility air lock or something that went bad aftervt( oil change. I believe these transmission has specific procedure for drain and refill but not sure as I never worked on one. 

Oil was changed by local specialist (machanic specialized with dynamic fluid change), so I think he know what he is doing? or maybe not, I dont know...

Today morning I checked the noises on N mode while rolling down the hill and are similar as while driving on D. What I know is on N there is no connection between CVT and drive shaft. So if Im correct, its not a transmission fault.

[TonyHSD]

45 minutes ago, genek13 said:

Oil was changed by local specialist (machanic specialized with dynamic fluid change), so I think he know what he is doing? or maybe not, I dont know...

Today morning I checked the noises on N mode while rolling down the hill and are similar as while driving on D. What I know is on N there is no connection between CVT and drive shaft. So if Im correct, its not a transmission fault.

The wheels are connected directly to the driveshafts and driveshafts directly to the differential, as soon as car moves the differential gears also moves , maybe something along there and not the cvt cones or belt. It’s just strange that the noises happened shortly after oil change but all that could be just a coincidence. 

[genek13]

On 4/2/2024 at 10:09 PM, TonyHSD said:

The wheels are connected directly to the driveshafts and driveshafts directly to the differential, as soon as car moves the differential gears also moves , maybe something along there and not the cvt cones or belt. It’s just strange that the noises happened shortly after oil change but all that could be just a coincidence. 

Hello, im back with the news 🙂 After a long waiting in quenee to machinc shop and few days of diagnosis, parts replacements - the reason of those humming noises was front right wheel bearing... The previous SPECIALIST mount it too tight, so after 1500km the inside grease was gone, which makes those noises. Everything is fine now with the car 🙂 

Thank you all for your support !