Ticking Sound Coming From Dash Near Windshield

[ryanc92]

I was able to get a video.

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[IndistinctChatter]

Great job capturing the sound, I have been chasing this for a while now and still haven’t found an answer. I agree with earlier comments that the noise is more prominent with hotter outside temps and bumpy roads, but I hear it all the time now unless I’m on the highway.

• Loose hood prop – no luck
• Hood acoustic shield, added foam to isolate – no luck
• Firewall heat shield and foam from this thread “Odd rattle on driver's side - can't tell where it's from.” – no luck so far
• https://www.4runner6g.com/forum/threads/odd-rattle-on-drivers-side-cant-tell-where-its-from.6023/

Our 4th gen is rattle free, so this is aggravating.

 

[Tasc]

ive noticed that the noise is only audible during the first few minutes of driving on local roads. when i get on the highway the noise goes away, even when getting back off the highway.

I see the same thing, usually mostly present right after taking car out for first time that day. The noise does seem to go away after driving for awhile. Didn't have the noise for first 3000 miles, now it comes and goes daily.

 

[TRDBROG]

What would it take to get a TSB going?

 

[porkyfly]

What would it take to get a TSB going?

TSB's are issued by the manufacturer, we don't have control over that. I guess we can all complain to Toyota corporate? Might go to the dealer tomorrow but I doubt they can do anything. Rattles are like a death sentence because they are usually not diagnosable

 

[porkyfly]

filed complaint with NHTSA, everyone else please do the same so we can get sufficient complaint volume

 

[TRDBROG]

filed complaint with NHTSA, everyone else please do the same so we can get sufficient complaint volume

Just did as well!

 

[porkyfly]

This was fixed by wedging a towel between the hood and the windshield cowl weather seal:

 

[Tasc]

This was fixed by wedging a towel between the hood and the windshield cowl weather seal:

That does seem to make the most sense for the sound based on where it's coming from. I'll try the same trick to see if it fixes it, then need to find a better long term solution. But thank you for figuring this out if it does turn out to be the issue!

 

[porkyfly]

That does seem to make the most sense for the sound based on where it's coming from. I'll try the same trick to see if it fixes it, then need to find a better long term solution. But thank you for figuring this out if it does turn out to be the issue!

The towel is obviously not a permanent solution, it was just to diagnose the issue.

The issue is either caused by hood rattling against plastic cowl or cowl rattling against whatever's underneath it. All the towel does is put adequate pressure on the hood/weather stripping so the rattling stops. This makes sense as highway driving puts enough aerodynamic pressure on the hood to stop the rattling. As for why the rattling stops after the car warms up, im not really sure. Maybe the rubber weather stripping expands due to heat causing it to make better contact with the hood.

Let me know if the towel trick works for you

 

[Tasc]

The issue is either caused by hood rattling against plastic cowl or cowl rattling against whatever's underneath it. All the towel does is put adequate pressure on the hood/weather stripping so the rattling stops.

I stuffed a towel on top of the cowl as shown, but unfortunately didn't stop the sound for me. I may try again and line the entire length of the cowl. But I think you are spot on about it being related to the cowl. Just need to figure out where it is rubbing in my truck. May even be where the cowl seals up against the windshield itself.

 

[porkyfly]

I stuffed a towel on top of the cowl as shown, but unfortunately didn't stop the sound for me. I may try again and line the entire length of the cowl. But I think you are spot on about it being related to the cowl. Just need to figure out where it is rubbing in my truck. May even be where the cowl seals up against the windshield itself.

Can you take a pic of your towel placement, as well as a video of the sound you are experiencing? Here is a video of the sound the towel trick fixed:

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