2010 Lexus RX450H Hybrid engine problems

“We had a known oil line ruptured the oil cooler, there was a serviceable and sit out to the dealers to only repair if it was leaking and they extended it to 10 years $150,000 miles our vehicle had a rupture at 170,000 miles we were never told about the recall or we would have it done earlier we now have sparkles in our oil this is the part that it doesn't leak it ruptures I'm sure all out could place a fire and it certainly is can cause catastrophic damage to the engine 1500 to repair”

“I was looking at common problems associated with the make and model of my car. I came across an issue that could possibly cause engine failure. I am unsure if any one has reported it yet. here are the details - Problem overview An VVT-i oil line on the Lexus RX350 is known to burst. This is a very large leak which covers the ground, engine, and undercarriage. If the oil line ruptures while driving, the low engine oil message and engine oil pressure warnings will illuminate. Continued use after these warnings will result in complete engine failure due to oil starvation. The line is known to be defective, and a revised part has been issued by Toyota, however, this revised part is known for the same issue. To repair the issue, the line must be replaced, and the engine bay and undercarriage must be cleaned thoroughly. The problem has occured generally around 120k miles. Here is the link to the website that has collected information from 116 users. Requesting you to please check if this a problem that needs a recall? [XXX] ely report it.”

“Pot affects 2007-2011 RX350/450= 459,285 units. 1. On Friday, [XXX], the oil cooler pipe burst on our 2010 RX350. 2. All six quarts of engine oil were lost in approximately 700 feet while traveling at 70–75 mph on the highway. 3. Massive amounts of smoke poured from the front of the vehicle & through the air vents, causing my wife & daughter to fear for their safety due to risk of a fire & smoke inhalation. 4. No warning lights appeared on the dash, meaning the vehicle could easily have been driven to engine failure had there been no smoke. 5. 2 Colorado Department of Transportation vehicles & a State Trooper stopped to be sure they were ok & monitor the risk of a fire. 8. Towed & Lexus dealership confirmed seen many 3rd gen RXs with this same issue, some with seized engines because no dash warnings were triggered. 9. Lexus updated part from RUBBER to STEE, acknowledging design flaw. Major Safety Concerns This failure represents a serious safety risk that could have resulted in fire, injury, death, or catastrophic engine/property damage. - Oil spray on hot engine components like the headers & exhaust pipes (700-1100F) poses a legitimate fire hazard considering…”

“The the VVI oil line failed in April of 2024. Contacted Lexus corporate via phone and problem was never resolved. Fast forward to November 2024 and after paying to have VVI oil line replaced the motor failed on the highway. Mechanic said complete engine failure. THIS CAR WAS A CERTIFIED USED LEXUS AND THEY FAILED TO REPLACE THE VVI DURING THE CERTIFICATION PROCESS! Prior to buying this used car from an individual I called Hendricks Lexus 6935 W Frontage Rd, Merriam, KS 66203 and spoke to service advisor Willie who said if you have any problems with that vehicle bring it in and Lexus IS making good on the hybrid vehicles. After purchase I went to Hendricks 9300 NW Prairie View Rd, Kansas City, MO 64153 multiple times for parts and service history. I spoke to parts manager, service manager and several others and NOT ONE PERSON INFORMED ME OF THE PROBLEM AND IMMEDIATE NEED FOR CONCERN! HOW DID THIS CAR GET CERTIFIED PRIOR TO THE PREVIOS OWNER BUYING THE VEHICLE “CERTIFIED”? I BOUGHT THIS CAR WITH THE UNDERSTANDING THAT IT HAD BEEN COMPLETELY CERTIFIED AND GIVEN THE 6 year additional warranty to the owner I purchased it from, although they were still considerably…”

“The transmission to oil cooler hose erupted!! Oil was sprayed everywhere along highways. Destroying environment This is an environmental safety issue. As well as a vehicle killer. It is a well documented problem with Toyota and lexus vehicles. Just Google it. Many have been recalled. This is a serious design flaw. The government needs to address this. Every mechanic is stunned at how ridiculous it was to use rubber instead of metal. Toyota/ Lexus needs to recall all vehicles snd repair this. And reimburse those who already fixed them or lost their vehicles. One mechanic said this could result in vehicle fires I realize my vehicle is old. But this is an ongoing issue with multiple years involved. Thank you”

“There is a known issue in the form of a Warranty Policy Bulletin and I believe a recall in Canada for a faulty engine oil cooler line that was made of rubber and fails under heat (now replaced by metal lines). This happened to my daughter after a hot day and she pulled away from the driveway the next day. Almost all of the oil leaked out and we stopped the car and had it towed to a Lexus dealership. When it was inspected, it was confirmed this was the issue, and there was a noise in the engine. I have a concern that further engine problems may have resulted in a loose bearing needing compete replacement. This has yet to be confirmed, but seems consistent with the many discussion boards that mention this exact issue.”