Upon parking after 20-mile drive, severe leak of transmission oil from transmission oil cooler area, no warning messages/lights or fault codes present. No evidence of leak at starting point for drive, was sudden failure internal to transmission cooler with no evidence of impact/vibration damage or corrosion; failure was perhaps at welds of fins to tubing. Leaking oil creates fire and slip hazard, lack of any kind of warning to driver would have allowed continued driving until transmission failed except for luck that this was short trip. Vehicle has never been damaged in a crash, has been carefully inspected and maintained since purchase new. This is not a wear item and should never fail without external damage or corrosion, certainly not at 45,000 miles. Difficult to believe that this anything other than a manufacturing defect on this early production (VIN ending 002034) vehicle. Repaired by Lexus dealer with Lexus covering half of cost as -??goodwill-?? (cost to me at ~$1,050 incl. towing), although dealer attempted to return vehicle without having reinstalled air duct and lower shroud.

- Falls Church, VA, USA

There is oil leak from timing belt casing. Only have 71000 miles on the vehicle.

- Basking Ridge, NJ, USA

Auto transmission frequently jerks and seems to search for a gear when starting from a stop. This problem is noted in other vehicles manufactured by Toyota. Dealerships tell me it is a reported problem but there is no remedy. Problem exists from date of purchase May 2016.

- Spring Valley, CA, USA

Around the middle of the month of January of 2022, I discovered that my 2016 Lexus RX350 has massive oil leak from timing chain cover. Thompson Lexus dealership confirmed this oil leak. This leak not just happened, but it has happened long ago at least 6 months prior to the time that I discovered based on old oil dirty debris deposits and paints popped out and rusted caused by prolong oil on the frame. The reason that did not detect the oil leak right away was that I have almost not used the car at all for the past two years due to Covid situation. Second, I have parked my car on my lawn, so that could not see oil drops. Third, I put my trust on Lexus and Toyota products, so I have not inspected for oil leak periodically. This oil leak has soaked many parts of the engine, frame, electrical connections, and possibly other moving parts such pulleys and belts. This can potentially create smoke or fire hazard and belt and pulley slippery which can lead to accidents. At the time of the oil leak, my car was under 54,000 miles and under 6 years, so it was still under powertrain warranty with is 6 years and 70,000 miles. I have contacted Lexus several times regarding this matter. I told them about location of the oil leak and when oil started leaking, my car was still under powertrain warranty but Lexus refused to pay for the timing cover repair. After doing research on RX350 from timing chain cover, I have found out that a lot of Lexus RX350 has developed oil leak from timing chain cover since year 2009 or 2010 model to 2016 year model. Some RX350 developed timing chain cover oil leak from a few thousand miles of first use to 38,000 miles. Lexus was aware of the problem, but completely ignored and failed address the problem and issue a recall.

- Philadelphia, PA, USA