Automatic Transmission problems of the 2003 Lexus ES300

The Lexus Es300 has had a serious hesitation problem since delivery in March 2003. I have had it in for service several times before the accident complaining about this problem. On may 8th,2006, my wife was trying to make a left turn at an intersection and upon accelerating through the turn the car hesitated/lagged and was struck by an oncoming auto. After contacting Lexus direct, they came out to test drive the auto. I was contacted several days later and was told that my Lexus has no problem. Since this problem still exists, I took the car back in for service on may 26th, 2006 and again was told that my car had already received a transmission computer update and their final words were "vehicle is operating as designed at this time". This car still has the problem.

While shifting the transmission had a ten minute delay before responding, and the transmission jerked uncontrollably. Driver was able to maintain control of the vehicle, and drove it to the dealer. Mechanic determined that the vehicle was operating as designed.

I have now sent my car in for service twice to Lexus of orlando about unexpected surging of the vehicle and vehicle hesitation when the accelerator is pressed. This is an intermittent and dangerous problem, as I do not know when it will occur. When it does occur the upshift is harsh, the downshift delayed as if the transmission is confused about the driver's intention, and there is pronounced hesitation when the accelerator is pressed. This lack of responsiveness leaves both the vehicle and passengers exposed to accident and injury. On my first visit, I was told the vehicle computer would be reset, as the vehicle learns your driving style in the first 30 or so miles, and I must have driven the vehicle harshly. This so called reset did nothing to fix the problem; less than a week later, I narrowly escaped a crash after my car hesitated while crossing an intersection. I promptly returned the vehicle to the dealer for service. Upon completion of the second service, which included a drive with the technician, Lexus service now says these problems are inherent to the model and they can't fix them. In addition, I am aware that numerous owners frequently complain of hesitation and surging in 2002, 2003, and 2004 models and many complaints (over 100) of the same nature have been filed with the NHTSA. This statement is to issue notice that I am not satisfied, and the problem has not been fixed.

On two separate occasions, I have taken my 2003 Lexus Es300 in for service to repair a defective transmission. I have 23,511 miles on my vehicle and the transmission is shifting erratically and hesitating. It is causing unsafe driving conditions. Lexus denies any responsibility to fix the problem.

Ongoing and worsening lack of accelleration predictability. Car will hesitate especially when power is required (such as merging traffic, left turns, etc. ) automatic ransmission sounds like it delays engaging when necessary.

Car will not accelerate from stop at times. Engines revs but transmission will not catch. Several near accidents at stop signs and traffic lights. Transmission shifts very rough and makes car steer erratically. Car will be parked until repaired. Lexus dealer states this is normal.

While driving and without warning, the transmission jerked, which caused the driver to pull off the highway. The driver had the vehicle towed to the dealer. The vehicle jerked at acceleration, especially when going at slower speeds. The problem occurred with no warning and was intermittent which also displayed a sluggish delay.

Lexus Es300 2003 - extremely dangerous situation when accelerating from 5-10 mph to full acceleration (passing/merging onto highway for example). Transmission hesitates a very long time (1-2 seconds) before kicking in. Dealer claims this is a known problem but nothing is being done about it. Researching Lexus forums indicates this is a wide spread problem for 2002, 2003 years at least. The hesitation is extremely unnerving in a high stress merging environment at least and potentially dangerous accident potential at worse.

There is a dangerous and unpredictable tendency for the vehicle engine/transmission combination to accelerate suddenly and unexpectedly. This is an intermittent problem which makes it especially unnerving. It is most noticeable at speeds below 40 mph, when first slowing, followed by acceleration. It appears to be exacerbate by uncertain transmission "hunting" for proper gear/engine speed combinations. The sudden acceleration causes a rapid and jerky throttle response to mild accelerator pedal input. I have taken the car to the dealer on at least two occasions for this issue. The first time, the dealer reprogrammed the transmission. The second time, the technician tested the vehicle and note "no problem found". At current mileage of 32,000, the problem seems to be worsening. This is a dangerous condition that, if left undressed, is likely to be the cause of an accident, serious injury or much worse.

Transmission is unpredictable. Sometimes it hesitates, sometimes it lurches. It shudders at times when shifting. I've had the car in to the dealer for 2 computer download fixes. The first lasted a day making the car seem like the demo I test drove. The car was returned and another fix by computer was done with no change to the querky, unsafe condition of this transmission. My wife was nearly broadsided in cross traffic pattern as the car hesitated as she attemped to turn onto a side street. I have had 4 similar situations. These problems are at speeds up to 40 mph. These problems do not seem to occur if you stomp on the accelerator from a stoped position. The genearal manager at the agency has driven the car "around the block" and experianced none of these problems. Yet the servive dept. Admits its not the way this car should operate and no further manufacturer update/correction is available. They say they are working on it. The manager says per Toyota this is the normal way this car drives and they won't do anything to satisfy my complaint. These two statements are a contradiction. I've been advised by one of the technicians to use premium fuel because it would help the engine/transmission work better. I've done this since that conversation and the performance is still sub standard and in stop and go traffic still unpredictable and dangerous.

There is a delay after sitting at a stop light and then at take off. The dealer could duplicate the problem and the manufacturer and dealer states that it is the new design. The problem would also occur when making a left turn, merging into traffic, entrance ramps, intersections and parking spots.

Hesitation upon acceleration. I notice the vehicle lacks the ability to pick up speed from a slow down or dead stop. I feel this in 1st-3rd gears when accelerating from a deceleration speed or stop. This is very serious and is cause for safety concerns. I just bought this vehicle and I have another problem with a clicking, whining noise when turning into a parking spot or making slow turns.

The transmission of the Lexus 2003 Es300 is subject to major hesitation, particularly in crowded intersections and with lack of acceleration. Very noticeable when traveling about 27 mph, and then needing to move, there is major delay in the signal telling the engine, and transmission to work together, and move the car. This vehicle is new with about 1000 miles. It cannot make up its mind to upshift or downshift and this delay will mean a major crash someday. Around 40 mph it wants to upshift to the 5th gear, and just below that hunts to go back to 4th. The mfg. Says, as he did for the 2002 models, that a software fix is being prepared. They stated the problem from the 2002 was fixed. Evidently that is not the case. They now tell me that a fix is coming year end. How many accidents will occur by then? dealer says that the car will learn from the driver, but that is not working, and hesitation from 0-5, from 27-45, etc. Is very pronounced. If you "floorboard" it from slow speeds, its hesitation is great, and car almost dies. Lexus says "don't do that", but from car creation to now, car movement meant add more gas, not the reverse. My safety depends on it.

The new 5 speed transmission on my '03 Lexus seems a little strange. If I drive about 35 mph and then slow down to about 5 mph and than try to accelerate there is a hesitation. It's as if the transmission can not decide on what gear to go into. When it finally does there's a slight lurch forward. This situation is very dangerous when trying to pass another vehicle.

When accelerating out of a slow turn(usually a u-turn) the car will delay approx 1 second before transmission engages. When slowing to stop but not completely stopping the transmission feels like it is slipping when accelerating.

From the day I got the car the automatic transmission has been in trouble. The problem is the shift from 1st to 2nd. Under light throttle there is free wheeling and engine run-up and it bumps into second. I know it will eventually fail. Lexus has played with the computer control but can't correct this. They tell me this normal, but I know it is not normal for any non- Lexus transmission.