Tl* the contact owns a 2016 toyota 4runner. the contact took the vehicle to precision toyota of tucson (520-795-5565, 700 w wetmore rd, tucson, az 85705) for routine service. the dealer diagnosed that the inner constant velocity boot leaked oil and needed to be replaced. there was no warning indicator illuminated. the contact was informed that the part was not covered under warranty. the manufacturer was made aware of the failure and stated that the part was not covered by the warranty. the vehicle was not repaired. the failure mileage was 18,445.
Vehicle was parked in my driveway which has a moderate slope. engine was not running. despite being in park, the vehicle rolled down the driveway and only stopped when it hit my mailbox at the curb. i complained about the matter to toyota. they inspected the vehicle and concluded "we did not find evidence of a defect with the transmission or shift selector [sic] caused this incident." the vehicle had been sitting there for at least 10 minutes. the parking brake was not set. i did not bump the shift lever or do anything else that could have caused the vehicle to come out of park. i spoke with the toyota engineer who inspected the vehicle and he told me he could not explain what happened. i am concerned there is a safety defect with this vehicle. obviously, i will always use the parking brake in the future. attached is toyota's letter to me saying they did not find a defect and my letter in response. thank you for your assistance.
The day after we purchased this 4runner in october 2015 the 4 wheel drive stopped working and when we took it back to the dealer they said that rodents had chewed through the wire housing connected to the drive train. initially they were not going to warranty the issue but after further aggressive discussion by me it was covered. apparently toyota uses a soy based spray or coating on the wiring that attracts rodents. the vehicle was operable but the 4wd warning light was flashing and 4wd did not engage. we have also heard from a neighbor with a 2015 4runner that a similar situation happened to them but it affected their whole electrical system and that the vehicle was not operable and had to be towed to the dealer.