2019 Toyota Highlander

Upon acceleration, the engine revved high and a whine sound started once the car (2019 Highlander XLE) approached 25-40 miles per hour. It appears that this is a transmission issue that Toyota was aware about years before selling the 2019 (and later) Highlander and other models (according to consumer complaints online). The car has 92,700 miles on it and is thus out of warranty. It had a recall in 2020 though I do not know exactly what was allegedly fixed. Had Toyota disclosed these serious transmission issues, I would not have purchased the car. My local mechanic has advised that the transmission will need to be replaced at a high cost.

At approximately 85K miles my 2019 Highlander began to exhibit a high pitched “whirring” sound upon accelerating. The noise stops once you take your foot off the gas. I brought the vehicle to my local Toyota dealership to investigate the noise. They concluded that it is the transmission and I would need to replace the entire transmission. There are no warning lights or other indications aside from the sound. Transmission fluid is clear of any shavings or other indicators of an issue. Toyota service stated they could not tell me if or when the transmission might fail, just that it should be replaced. There are multiple reports of similar occurrences on online Toyota forums. There are also recalls for the exact same sound for the 2018 Highlander. I opened a case with Toyota customer service and was told there was nothing they could do to assist.

When starting the vehicle, and extremely loud feedback noise is emitted from the front right speaker. This happens intermittently. Sometimes it's every 5th time you start it, and sometimes every 29th start. This started happening after the dealer-provided SOS Safety subscription expired. The noise is extremely loud and very disturbing especially for individuals like our daughter who has special needs. I would not be surprised if it is damaging our hearing. It would likely be especially harmful to children! It has been confirmed by the dealer and is currently back at the shop whule they are further investigating the cause.

Complaint Regarding DCM Module Failure in 2019 Toyota Highlander Platinum Our 2019 Toyota Highlander Platinum is experiencing severe audio system malfunctions, beyond simple Bluetooth and connectivity failures. The vehicle sporadically emits an extremely loud screeching feedback sound upon startup and at unpredictable times while driving. This deafening noise is highly distracting to the driver, posing a significant safety risk. Toyota has been aware of this issue for years and documented it in Technical Service Bulletin T-SB-0112-20, which identifies the faulty vehicle assembly locations. However, despite widespread reports from owners and the high cost of repairs, Toyota has failed to issue a recall. Given the clear safety hazards associated with this defect, I firmly believe Toyota should recall affected Highlanders and provide immediate replacements for the defective DCM module. Owners should not be forced to cover costly repairs for a known issue that compromises driver safety.

2019 toyota highlander bought 3/15/25 with approximately 82,000 miles. Started making whining noise 4/7/25. On 4/9/25 took vehicle to dealer 4/11/25 notified need new transmission and transaxle seal need on new transmission. 2 weeks later on 4/25/25 picked up vehicle drove home 3 days later noticed gear oil leaking and sprayed all over under chassis. Vehicle brought back to dealer on 4/29/25. On 4/30/25 notified needs new transaxle seal on new transmission. Notified on 5/9/25 new transmission will need to be replaced again. They stated there is gouging/nicks where transaxle and transmission connect. Dealer is saying there is no transmission to put in. Toyota has put a stop to all transmissions. So now I have a vehicle with only 82,000 miles and no way to fix it.

Transmission failed while driving down the highway almost causing an incident. These transmissions are very unsafe and should be recalled. Toyota refuses to take responsibility for this year Highlander although it is the same 80ua transmission that was recalled in the 2017 and 2018. While Toyota has said this problem has been remedied in the later years it is very false. Please do an investigation on this before people get hurt from accidents if they haven’t already.

The contact owns a 2019 Toyota Highlander. The contact stated while driving at an undisclosed speed, the contact became aware of an abnormal whining sound coming from the vehicle, and the transmission was shifting hard. No warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not yet repaired. The manufacturer was made aware of the failure, and a case was filed. The contact was referred to the NHTSA Hotline to report the failure. The failure mileage was approximately 95,000.