Lexus Rx400h owners have reported 4 unknown or other related problems since 1996. Table 1 shows the 1 most common unknown or other problems. The number one most common problem is related to the vehicle's unknown or other (4 problems). For details of each of the problem category, use the links in the table.
| Problem Category | Number of Problems |
|---|---|
| Unknown Or Other problems |
For no known reason, front windshield cracked. No visible marks that glass could have been hit by rock or any hard particle. Crack starts from where the rear view mirror is placed going down and up to the top edge of the windshield. Manufacturer denied claim for replacement stating it is not a manufacturer's defect.
1a. After putting the key in to key hole, if your start the car right away, it will give you a failure "check vsc system" or"shift to "park" before starting" even it was already parked. 1b. Power drained if radio was on for 10-20 min and car will not start 2. It usually happens when the car is cooled. I had to wait for a few seconds after putting the key in the ignition before turning start to get it start. 2 years after having the car, the starter battery was replaced with the similar situation described above. Dealer now claims that battery needs replacement again. 3. Replacing starter batter was done the first time. I really doubt that battery died out so quickly, so I've done a bit research (provided link below) and found quite a few talked about inverter failure causing similar issues, and it not only result in high cost to replace the inverter, possibly life because vehicle brought to stop when in motion. . Read more...
I drove the vehicle (VIN-jtjhw31u482853535) about 25 miles from home to a doctor’s office, at typical northern virginia highway speeds on I-66 & I-495. I arrived at the doctor’s office, I entered the parking lot at about 5 mph, I approached a parking space and at about 2 mph made a right-turn into the space. Without warning, the vehicle started accelerating. I could not stop it even with both feet on the brake pedal. The vehicle jumped over a concrete parking strip, then the concrete curb, up a slight embankment and through a wooden fence. The vehicle eventually came to rest with 3 of the 4 tires on the embankment over the curb. The right-rear tire was resting against the parking curb strip. The vehicle continued to lurch forward trying to pull the last wheel up out of its resting spot. I looked down at the brake/accelerator pedals and though both of my feet were on the brake pedal, the vehicle was still trying to move forward. I shifted the vehicle into park and the vehicle continued to try to lurch forward, so I turned off the engine. After departing the vehicle, I checked the driver’s side floor mat and noted that the floor mat was properly positioned, hooked to hooks on the floor of the vehicle. The car was towed to a Lexus dealership where it was inspected by a Toyota-authorized engineer. Since the event could not be reproduced, we were told that there was nothing wrong with the vehicle and that it was safe to drive. Though we were told that we would be provided with the analysis of test results, Lexus has not responded to our repeated requests for this information. The vehicle had been properly maintained by owner for all required services and had just been serviced in September 2010. To date, there has been no determination as to what actually cause this sudden uncontrolled acceleration event which resulted in $7600 damage to the vehicle.
There is a coating inside the condenser that flakes off and blows into the cabin of the vehicle. It is like sand. I am told it is aluminum hydroxide. My wife and I were told it was safe and we could take our trip. During the trip we breathed in this stuff flying in the car. We ended up with sinus infections. It is troubling that it was blown off as no big deal. The part was replaced, but I worry that other people might end up with the same problem.