Burnt smell in cabin at high speed in cold weather - Toyota Yaris Forums

tmontague · 11-24-2015, 02:28 PM

Have you checked your exhaust header to make sure it was clear of anything?

If that checks out then remove the glove box and check the cabin filter behind it. Use a light and see if anything is stuck in there or if there is any residue.

Is the smell there if you are traveling at highway speeds without the fan on? If not then it could be an issue with the motor potentially.

I haven't heard of this issue before, i'm interested to see what others think.

JBinc · 11-24-2015, 07:48 PM

I have a similar symptoms with my '07 Yaris 4dr w/205K miles. I was driving on the highway and suddenly my exhaust was twice as loud as normal. I put it on a hoist yesterday and found that the connection point where the pipe from the exhaust headers meets the section of pipe just before the cat was loose. There was no spring between the two flanges, just two bolts. I'm thinking the gasket deteriorated, causing the gap resulting in the exhaust noise.

This connection point in the exhaust lies just to the right of the driver's foot on the underside of the car. It's possible the exhaust gases from the leak are heating things it wouldn't normally come into contact with. Maybe your heat shield is also gone (due to rust/deterioration). Check this point in your exhaust if you're able to get under it.

11-24-2015, 02:28 PM	#1
tmontague View User's Garage Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012 Location: Caledonia Ont. Posts: 2,938	Have you checked your exhaust header to make sure it was clear of anything? If that checks out then remove the glove box and check the cabin filter behind it. Use a light and see if anything is stuck in there or if there is any residue. Is the smell there if you are traveling at highway speeds without the fan on? If not then it could be an issue with the motor potentially. I haven't heard of this issue before, i'm interested to see what others think. __________________ No one ever wants to give a Yaris the point by...

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11-24-2015, 07:48 PM	#2
JBinc Drives: 07 Yaris Sedan Join Date: Nov 2014 Location: MI, USA Posts: 5	I have a similar symptoms with my '07 Yaris 4dr w/205K miles. I was driving on the highway and suddenly my exhaust was twice as loud as normal. I put it on a hoist yesterday and found that the connection point where the pipe from the exhaust headers meets the section of pipe just before the cat was loose. There was no spring between the two flanges, just two bolts. I'm thinking the gasket deteriorated, causing the gap resulting in the exhaust noise. This connection point in the exhaust lies just to the right of the driver's foot on the underside of the car. It's possible the exhaust gases from the leak are heating things it wouldn't normally come into contact with. Maybe your heat shield is also gone (due to rust/deterioration). Check this point in your exhaust if you're able to get under it.