1999 Lexus RX300 Engine cooling Problems
- Complaints
- 24about this part
- Share
- 11%of 221 total for the year
- Median mileage
- 88,000miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 24 complaints about the engine cooling of the 1999 Lexus RX300, 11% of the 221 complaints for this model year. Where a mileage was given, the median is 88,000 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My 1999 -- Lexus RX300 has about 140k miles on it. The car is now parked so I don't kill myself or my family while driving. A couple months ago, my car just started jerking as if it was going to cut off and my check engine light came on. I work off a major highway and I was really scared. My car speed would be 50-55mph but the rpms would be as high as 6. I have never experienced anything like that before. I went to the car repair shop - I had some mis-fires and they were fixed for $150, no problem. …”
NHTSA complaint #10331462, filed 2010-05, 145,000 miles“I have a Lexus RX300 awd and just found out that the transmission needs to be replaced at 120,000 miles. I was very shocked when I took my vehicle in for scheduled maintenance and was told that the transmission is going out and it would be $5720 to repair it. I am very disgusted with this because I started researching the issue and have found that there are several problems with this so called luxury vehicle that is suppose to last you to 250,000 miles or more.”
NHTSA complaint #10182980, filed 2007-02, 122,000 miles“I have read as many of the owners of 1999 Lexus RX300 SUV , I am not surprised to know that I am now a proud owner of a brand new transmission that failed on my wife while returning from greenville to columbia sc. The transmission was indicating problems by shifting slow as many other complaints that have been filed . When these transmissions start to fail you experience slow shifting when the car has been sitting , even if you let the car warm up first before moving into any gear drive or reverse. …”
NHTSA complaint #10277275, filed 2009-07, 141,000 miles“I want you to know during this time of toyota problems and coverup, that we leased new a 1999 Lexus RX300, it was maintained at meade Lexus according to plan and my wife was driving on a freeway and the engine suddenly seized and the car quit working. The car had my two infant children in it at the time and she was stuck near the exit ramp with vehicles/trucks/semis bearing down on her. She and the children were scared and nearly collided with at its sudden location to stop. The car was towed to the Lexus dealer and discovered sludge had ruined the motor. …”
NHTSA complaint #10313078, filed 2010-02, 20,000 miles“I own 1999 Lexus RX300, since february of the last year, I had numerous problems with the car's engine (it has sludge), transmission, emission system, and over use of gas per mile. First problem started during the first month of my ownership and since that time the vehicle has spent weeks in auto repair shops. Lexus dealer and others charged me lavish fees but never fixed the problems and Lexus dealers even never admitted that serious problems existed.”
NHTSA complaint #10014038, filed 2003-04, 88,000 milesEngine cooling: other model years
Other parts of the 1999 Lexus RX300
129 complaintsAir bags
14 complaintsBrakes
11 complaintsVehicle speed control
11 complaintsSeat belts
10 complaintsElectrical system
8 complaintsTires
7 complaintsExterior lighting
6 complaintsSuspension
6 complaintsVisibility (wipers, defrost, mirrors)
5 complaintsEngine
4 complaintsOther or unknown
4 complaints
← All problems reported for the 1999 Lexus RX300
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology