2003 Lexus RX300 Transmission and drivetrain Problems
- Complaints
- 7about this part
- Share
- 28%of 25 total for the year
- Median mileage
- 97,963miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the transmission and drivetrain of the 2003 Lexus RX300, 28% of the 25 complaints for this model year. Where a mileage was given, the median is 97,963 miles. 1 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The vehicle suddenly lost transmission on the road and was rolling freely. The gears does not work anymore and the vehicle rolls as if its in neutral. When search the internet I looked at lot of the customers complaining about exact same thing, about this vehicle having transmission issues especially for RX300. No wonder toyota has this many recalls and surprised that their premium brand has the same issues with safety. I am glad that this did not happen on a highway”
NHTSA complaint #10401788, filed 2011-05, 117,000 miles“I have a 2003 Lexus RX300 with 134,000 miles. The transmission failed on 2/20/09. After a couple of days of a slight whine, three lights came on the dashboard. I took it in to my local repair shop. They ran a computer diagnosis and it came back with transmission failure. I purchased the vehicle while still under warranty at 48,000 miles in 2006. I have had the transmission serviced twice at the recommended intervals. It was due for a 3rd service. Internet blogs report that transmission failure is a chronic problem with this vehicle after 70,000 miles. …”
NHTSA complaint #10260025, filed 2009-02, 134,000 miles“My wife drove the vehicle to work. She parked, turned the engine off, and removed the key while the shifter was in the neutral position. Thinking that it was in park , she exited the vehicle and began to walk away. The vehicle rolled backward and pinned her right let in between its rear bumper and the bumper of another vehicle.”
NHTSA complaint #10258068, filed 2009-02, 61,000 miles“During normal driving, with no signs of failure, the vehicle suddenly would lose power when pressed on gas, it acted as if it were in neutral---engine revs up, but car does not move. Then when switched to second gear or l, transmission still would not engage. Had it towed to a local transmission shop, it turned out to be the planetary gear broke. Searched online Lexus forum, found out very many people reported the same failure in transmission.”
NHTSA complaint #10402143, filed 2011-05, 138,000 miles“The contact owns a 2003 Lexus RX300. While driving 65 MPH, the engine shut off without warning and the vehicle was towed to the dealer. The transmission was determined to be the cause of the failure and was replaced at the cost of $3,922.40. A report was filed with the manufacturer and they stated that the vehicle was out of warranty. The contact did not establish a relationship with the dealer; therefore, they would not assist. The VIN was unknown. The failure mileage was 78,926 and current mileage is 79,000. Updated 3/9/09 the vehicle would not shift into reverse. Updated 03/10/09.”
NHTSA complaint #10254835, filed 2009-01, 78,926 milesRelated service bulletins
- 10179697Aug 5, 2020TSB: Vehicles may display evidence of a fluid leak or fluid seep from powertrain components. This bulletin explains how to determine the differences between a fluid leak versus a…
- 10179601Aug 5, 2020TSB: Vehicles may display evidence of a fluid leak or fluid seep from powertrain components. This bulletin explains how to determine the differences between a fluid leak versus a…
- 10131726Jan 22, 2018TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. L-SB-0021-14. * Applicability has been updated to include applicable 2018…
- 10109449Oct 23, 2014TSB: Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix…
- 10205346Oct 16, 2014Auto matic Transmission Replacement kPrecautions
- 10109447Oct 16, 2014TSB: OBSOLETE NOTICE-October 16, 2014: This bulletin is now obsolete. Please see L-SB-0082-14.
- 10109445Oct 16, 2014TSB: The purpose of this service bulletin is to provide information regarding the installation of the correct torque converter bolts during automatic transmission/transaxle…
- 10109444Oct 16, 2014TSB: The purpose of this bulletin is to provide precautions to follow when installing an automatic transmission/transaxle assembly to avoid MIL "ON" shifting issues and/or…
- 10132108Oct 1, 2013This bulletin is now obsolete. Please see L-SB-0082-14.
Transmission and drivetrain: other model years
Other parts of the 2003 Lexus RX300
5 complaintsAir bags
3 complaintsElectrical system
3 complaintsEngine cooling
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsElectronic stability control
2 complaintsEquipment
2 complaintsBrakes
1 complaintsEngine
1 complaintsFuel system
1 complaintsOther or unknown
1 complaintsSuspension
1 complaints
← All problems reported for the 2003 Lexus RX300
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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