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Engine & cooling

2007 Lexus RX400H Engine problems

Owners have filed 14 complaints about the 2007 Lexus RX400H's engine & cooling with NHTSA - 12% of all its complaints, most recently on April 29, 2024. They describe 0 crashes, 1 fire and 0 injuries. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Complaints
14
Recalls
0
Crashes
0
Fires
1
Injuries
0
Deaths
0

Engine complaints

Engine & cooling

The contact owns a 2007 Lexus RX350. The contact stated while driving 30 MPH, the vehicle began to smoke. The contact pulled over and became aware that oil was leaking from the vehicle. There were no warning lights illuminated. The vehicle was towed to a service center and the contact was informed that the engine cooler hose had ruptured. The vehicle was not repaired. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 99,000.

Filed Incident Engine and engine coolingNHTSA 11585738
Engine & cooling

I purchased a used 2007 lexus rx350 for my 16 year old daughter. It had a little over 100k miles. Everything worked perfectly, no complaints whatsoever. Until, my son borrowed it, and while he was driving it, he said it quit. He lost all power steering, so he pulled over. We called a tow truck to tow it to a mechanic. When the mechanic called me, he said the oil cooling line busted, which made the oil pump empty the engine's oil. He said it would need a whole new engine. He said the car is worth nothing. I...

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paid $9k for this car a year ago, and now it is not worth $100. The mechanic said this is a known problem for toyota/lexus, but there was no recall. To me - this is unacceptable. In my opinion, since toyota knew of this problem, but didn't recall it, they either need to cover the cost of a new engine, or buy the car back from me. I am very upset over this.

Filed Incident EngineNHTSA 11360610
Transmission & drivetrainEngine & cooling

Check engine light came on on highway. Within a few miles, the hood began to smoke, so immediately pulled over. Towed to mechanic and was told water pump failure caused engine to overheat. Engine is destroyed.

Filed Incident Power train · EngineNHTSA 11308978
Transmission & drivetrainEngine & cooling

While driving in my neighborhood, I heard a noise. 1-3 Minutes later, the oil light came on. I went straight to the dealer (a mile away), despite the owner's manual indicating no urgency. They said my oil cooler line blew, leaked out all my oil and destroyed my engine within minutes. I came to find out later that this catastrophic, engine-destroying oil line rupture is a known defect to lexus (like the vvt line) but for some reason was never recalled despite it being just as catastrophic/dangerous. Lexus chose...

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to use a cheaper rubber hose instead of a metal pipe when the rubber hose can't take those high temps and will blow. 100% Likelihood this will happen'just a matter of when. I researched it and there are millions of toyota and lexus cars affected by this problem'every single '07-'11 rx 350 plus many toyotas. Lexus was made aware of the defect but chose not to fix it. Except in canada, there was a mandatory recall and this part was replaced. For some highly suspicious reason, this didn't happen here. Why? It's dangerous enough to recall in canada, but not the us? Instead of recalling, us lexus issued an insufficient 36 month warranty to replace it, but only if it blew during this time. If it didn't leak within that time, you're screwed. Lexus messed up its vin tracking system, so people were not made aware of this warranty. For those who were, the issue was downplayed as simply an 'oil seep' instead of an oil line explosion which destroys the engine. Customers were not told at the dealership. We should have been alerted to the defect so we could fix it proactively and spare us the death of a car with only 90k miles. Google this problem to see the thousands of posts/complaints on toyota/lexus websites. There needs to be a mandatory recall and/or reimbursement for those whose engines were destroyed by lexus' known defect. Please take action! Please.

Filed Incident Power train · EngineNHTSA 11268034
Engine & coolingFire

Sever oil leak and engine stop and smoke started coming

Filed Incident EngineNHTSA 11255393
SteeringBrakesEngine & cooling

While driving from florida to fairfax, ca the vehicle stalled ~10 time unexpectedly with loss of power brakes and power steering, making a very dangerous situation. The "check hybrid system and check vsc system" showed on the dash. Clearing the codes restarted the vehicle. I stopped in denver, co at kuni lexus of greenwood village, whom road tested the vehicle for 30 miles but were unable to duplicate the fault. Obdii dtc p3105 was read on my scanner before arrival. I have researched the failure more and found out...

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on lexus tis system; on 01/15/2014, lexus of miami claimed to have completed safety recall 13v396000 (intelligent power module (ipm) solder failures) but they only diagnosed some other problems and did not have time to perform this recall, neither did the inform me of it! I stopped at lexus of tacoma at fife, wa and they denied diagnosis due to minor body damage on the rear quarter panel where they claim water came in. This is not the location of water intrusion! The location is due to body seam cracks above that plain of the quarter panel damage, near the rear gate struts and hinges (see l-sb-0019-09), but they wouldn't look at that either and told me to go to their sublet body shop where the manager agreed with me that the water leaks into the high voltage battery pack/controller area was from the l-sb-0019-09 and not the quarter panel area. I sealed up all possible water intrusion areas and disassembled the hv battery pack area to see how much and where the water was (many photos) and dry it out with several days of sunshine here in fairfax, ca. I informed lexus corp about the relative recall/sb and they denied to complete it! The vehicle is back together and I am waiting on your response. I can be reached by email (i don't carry a cell phone) thank you!

Filed Incident Steering · Service brakes · EngineNHTSA 11182038
Engine & cooling

The oil cooling line in my 2007 rx 350 failed without warning, causing all oil to be lost from the engine and catastrophic engine damage. I was on a highway driving approximately 60 mph when this occurred without warning. The engine ceased and was completely ruined with only 110,000 in mileage. I did not receive notice of any recall related to this problem.

Filed Incident EngineNHTSA 11114248
Engine & cooling

The oil pressure hose busted. I took my car to lexus and they told me it was a common problem with the car and they have replaced the rubber hose with a metal one. I purchased the metal hose and had it replaced. Oil had already leaked out to the point that cause my engine to lock up

Filed Incident EngineNHTSA 11031392
Electrical systemEngine & cooling

2010 Vehicle stopped abruptly; lexus says hybrid system failed (covered) v but required new radiator and converter (4500). 2016 Traveling on freeway and burning industrial plastic coming from a/c ; lexus says can't find the issue, but four remedies for possible problem on internet; which one is it? Tried to up sale tires, filters, and new struts totaling 6000; while ignoring the primary issue coming from the engine.

Filed Incident Electrical system · EngineNHTSA 10888655
Electrical systemEngine & coolingFuel system

Hello, I own a 2007 lexus 400h. On aug 11, 2015 approximately 10pm the vehicle was traveling on hwy 17 south in myrtle beach sc. The vehicle was sitting at a green light in the turning waiting for on coming traffic. When the traffic cleared my wife proceed to proceed froward with the turn. Once she started her decent the vehicle started blowing coolant out of the front of the vehicle and from the bottom. The vehicle stopped responding leaving her in the middle of the turn. I have looked up online that lexus...

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recalled 2006 and 2007 lexus rx400h vehicles. When I called to talk with them about it they told me that mine was not included. This issues is the same issue that they describe on their website. I am very disappointed in lexus.

Filed Incident Electrical system · Engine · Fuel / propulsion systemNHTSA 10747772
Engine & coolingFuel system

OIL COOLER LINE LEAK ENGINE OIL EMPTY

Filed Incident Engine · Fuel / propulsion systemNHTSA 10735651
Acceleration & cruise controlDriver assistanceEngine & coolingFuel system

Vsc system warning light came on. Parked the car as it shut off. Car won't start. Warning light says check hybrid system. When trying to start car will say put car on park before starting. Same problem as seen in recalls for 2006 lexus hybrids. *Tr

Filed Incident Vehicle speed control · Electronic stability control (ESC) · Engine · Fuel / propulsion systemNHTSA 10575753
Engine & cooling

Car just stopped on freeway. Toyota stated was inverter. Called lexus states no recall or warranty. Paid $10,000. Later in mail got recall letter from lexus. Called lexus back who initially stated is covered. Sent in repair paperwork. Lexus then called back and said it was not covered but no longer required to have the recall repaired since this repair complete. Repaired: elk grove toyota 916-405-8000 part # g92ao-48080 inverter assembly. Recall part by lexus: inverter assembly. I have all receipts from toyota as well as recall letter from lexus. Toyota repair states it is same replacement. *Tr

Filed Incident Engine and engine coolingNHTSA 10563280
Engine & cooling

Traveling down highway at 65 mph. Vehicle began losing power and eventually stalled. Check engine light came on. Vehicle would not restart. Vehicle was taken to independent mechanic who did nothing more than remove exhaust manifold. Independent shop made me aware of lexus bulletin regarding 2gr-fse engine and similar symptoms. I reviewed bulletin and verified symptoms were effectively identical to those I experienced. Vehicle towed to jack safro lexus of brookfield, wi and lexus corporate was contacted by me at...

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that time. The engine was removed and two of the three bolts holding bank one vvt in place had come loose and were resting inside the crankcase. The third bolt was ~50% out when it sheared off and vvt failure caused engine failure. Lexus corporate was asked by me repeatedly to conduct an investigation with an engineer familiar to the system and to evaluate this (2gr-fe) for potentially the same root cause as the issue noted in the bulletin. Lexus was made aware, up to the executive level, that the failure mode was virtually identical to that described and evidence of failure was repeatedly offered. Lexus corporate continues to refuse to investigate this issue.

Filed Incident EngineNHTSA 10553901

Lexus RX400H engine complaints by year

RX400H engine problems, every year

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Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data

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