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I stumbled onto a new TSB 09-25-3 which covers 4WD and FWD vehicles as well as 2010. I can't take credit for it as I found another post from another site. Here is the quote:
ISSUE:
Some 2009-2010 Escape and Mariner vehicles equipped with a 6F35 automatic transmission may exhibit a single hoot noise on light acceleration from a stop just before the 1-2 shift. This noise will not occur any other time and will not occur under heavy acceleration. On four wheel drive (4WD) vehicles, the noise may be heard at the rear axle due to noise transfer through the rear differential unit (RDU). This is a normal characteristic of the vehicle and does not affect transmission function and/or 4WD function or durability. A revised transaxle chain has been released to reduce this noise.
My 2010 has this hoot. I am not sure what to do. I don't want to bring it in to get fixed if it is nothing more than a noise. But on the flip side the noise should not be there. Plus it only reduces the noise? WTF. How about fix it?
ISSUE:
Some 2009-2010 Escape and Mariner vehicles equipped with a 6F35 automatic transmission may exhibit a single hoot noise on light acceleration from a stop just before the 1-2 shift. This noise will not occur any other time and will not occur under heavy acceleration. On four wheel drive (4WD) vehicles, the noise may be heard at the rear axle due to noise transfer through the rear differential unit (RDU). This is a normal characteristic of the vehicle and does not affect transmission function and/or 4WD function or durability. A revised transaxle chain has been released to reduce this noise.
My 2010 has this hoot. I am not sure what to do. I don't want to bring it in to get fixed if it is nothing more than a noise. But on the flip side the noise should not be there. Plus it only reduces the noise? WTF. How about fix it?