Driveshaft problems of the 2011 Toyota Sienna

This vehicle has all wheel drive and uses an electromechanical coupler on the rear differential. It is very similar configuration to the Toyota rav4 that uses a viscous coupler in the same location. My coupler has failed due to the front bearing failing. The vehicle is 8 years old and has about 95000 miles on it. Toyota has issued a technical service bulletin and provided extended warranty coverage for the bearing failure problem on the rav4. So far, they have refused to provide similar coverage for repairs on the awd Sienna, even though the failure mode is identical. We first noticed the problem when the vehicle started making loud grinding noise from the rear axle while driving. It wasn't clear what the source of noise was, but after finding the service bulletin for the problem on the rav4, it became clear this same bearing failure was happening on the awd Sienna's, so it was repaired. It was repaired before it failed catastrophically. It is hard to know what would have happened if the sound was ignored. Would the drive shaft sieze up? engine stall? transmission fail? Toyota does not sell this bearing for the Sienna, they require the entire coupling to be replaced, with a list price over $1700, plus labor. This defective part should be subject of a recall and the repair performed on all awd Sienna with the defective bearing configuration.

There is a safety recall b0h issued by Toyota that only impacts certain 2011 model year Siennas. This is where the right hand front drive shaft assembly is impacted. The vehicle of my 2011 Toyota Sienna does not match those vehicle identification number(s) that are impacted by this recall. My vehicle is exhibiting the exact same issue that other 2011 Toyota Siennas are running into but my vehicle VIN number is not included in the safety recall. My vehicle has 75656 miles on it and Toyota dealership will not fix this safety recall without me paying for it. I called Toyota about this issue (case 1710022954) but they are refusing to send me any documentation through email on this and refusing to completely fix the safety recall issue on my 2011 Toyota Sienna.

The contact owns a 2011 Toyota Sienna. While driving approximately 30 mph, a loud noise was heard underneath the front end of the vehicle without warning. The vehicle was towed to sonoco auto shop, lexington ark, MD, where it was diagnosed that the front right drive shaft was fractured. Also, the front driver side drive shaft was faulty. The technician recommended that both parts needed to be replaced. The manufacturer was made aware of the failure. The failure was not repaired. Also, the contact received notification of NHTSA campaign numbers: 16v858000 (structure), 14v273000 (tires), and 11v560000 (equipment). The failure mileage was 100,000. VIN tool confirms parts not available. Parts distribution disconnect.