Wind noise at speed

[Jayw13702]

Has anyone else noticed the level of wind noise on a 300h at motorway speeds?

 

Mine makes a real racket, if I take the internal recirc off on the climate control its slightly better but still there is a heck of a lot of noise from the lower centre part of the windscreen, I have even close the centre vents and that's not changed it at all.

 

The other noise I have started to notice a lot is the wiper motor? Not as intrusive as the wind noise but for a premium car I'm really surprised I can hear the motor at all, I was never able to hear it in my Prius.

 

 

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[ianhu]

I'd get that looked at. I was on the motorway the other day and my is300h is quieter than the last lexus I had and that was quiet.

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[gnoxmindeater]

Can't say i notice any excessive noise in mine either.
Wiper motors are quite too.
I'd get it checked out.

Road noise is WAY quieter then my previous Mazda 6 - that was really bad over 60mph

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[rayaans]

My wiper motors don't make any noise at all..

And i don't have any wind noise at speed. As above I would get it checked out. Had the windscreen been changed as that could explain both issues.

[200h]

if you look on the windscreen there should be some writing in one of the corners

if its original lexus will be on the glass .

[Jayw13702]

Mine has had a replacement screen, it is a non genuine screen.

I don’t know when it was done as there’s no history of it in the info I got with the car, I’m tempted to remove the plastic scuttle and see if there’s anything obvious missing


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[Rabbers]

13 hours ago, Jayw13702 said:

Mine has had a replacement screen, it is a non genuine screen......

Jason:   Please take the following purely as an anecdote and not advice.    I once had a colleague whose Audi TT had a noisy non-original windscreen, 

 a fact he had not noticed when recently buying what was otherwise a very nice low-mileage car.   Confirmation that the noisiness was due to badly-

fitted low-quality glass was accompanied by not unexpectedly exorbitant quotes for a replacement by both Audi and a local windscreen specialist.

One day soon afterwards I found him grinning all over his face and gleefully pointing to a long crack in the windscreen caused, he said, by a stone

on his way to work - and which he had already reported to his insurance company.   While naturally sharing his joy at being able to claim 85% of the

replacement cost as per the terms of his policy, I was nevertheless left wondering about what must have been the most welcome stone in the history

of cracked windscreens.

[rayaans]

22 hours ago, Rabbers said:

Jason:   Please take the following purely as an anecdote and not advice.    I once had a colleague whose Audi TT had a noisy non-original windscreen, 

 a fact he had not noticed when recently buying what was otherwise a very nice low-mileage car.   Confirmation that the noisiness was due to badly-

fitted low-quality glass was accompanied by not unexpectedly exorbitant quotes for a replacement by both Audi and a local windscreen specialist.

One day soon afterwards I found him grinning all over his face and gleefully pointing to a long crack in the windscreen caused, he said, by a stone

on his way to work - and which he had already reported to his insurance company.   While naturally sharing his joy at being able to claim 85% of the

replacement cost as per the terms of his policy, I was nevertheless left wondering about what must have been the most welcome stone in the history

of cracked windscreens.

You mean hammer.....? 😂

[Rabbers]

1 hour ago, rayaans said:

You mean hammer.....? 😂

...You may very well think so, but I couldn’t possibly say...

[Jayw13702]

Well I decided to have a closer look at this today as this week I have about a 1000 miles of motorway to do and now that I've noticed the noose I seem to be focuses on it now [emoji35]

Stripped the wipers, scuttle and motor assemble out today, there are no grommets missing or holes in the bulkhead, so I moved onto the contact surface between the lower part of the glass and the windscreen aperture, because it's hidden I could only go by touch and it appears that there is little/no bonding agent between the body and the glass, whoever installed the glass put the bonding agent about an inch lower that it should be.

So what you have is a bead of bonding agent that has made no contact with the body, and a gap that is possible to slide a piece of paper between, this would explain my wind noise and ability to hear the wiper motor whirring away.

I had some black mastic in the garage so have run that along the join, not easy when it's not possible to see but I'm hoping that will cure the problem.

I don't know which company replaced the glass as it was done prior to me picking the car up secondhand, however given. Y mileage I'm sure it won't be long before I'm needing a replacement glass. I've had to on my previous two cars so I expect this one to cop for it as well.

I'm waiting for the mastic to dry properly before claiming a total success but I'm quietly optimistic


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[200h]

fingers crossed that you have fixed the noise

i had wind noise on my last IS around the top corner of the drivers door

i gave up in the end and lived with it