Q: Will a u140e trans from a 99 Lexus es300 interchange with a 99 Lexus RX 300? Fwd?

asked by on

Will a u140e trans out of a 99 Lexus es300 work properly fitted into a 99 Lexus RX 300 fwd with a u140e?

My car has 215000 miles.
My car has an automatic transmission.

Although the transmission type is the same (U140-E), the two vehicles have different Tag ID numbers on the transmissions and thus the two referenced transmission are NOT listed in the catalog as "interchangeable". Different Tag ID’s reflect differences in electrical controls and possibly differently calibrated valve bodies. At any rate, to answer your question the two transmissions are absolutely not compatible and to determine what retrofits "might" make them compatible would require quite a bit of research (it is possible to arrive at a determination, but you would have to check quite a few details and be very careful as these components are all computer controlled; matches have to be exact). If you are looking for an exact interchange, simply go to Car-Part.com and you will find an exact match for your car (there are many listed). Transmission swaps on modern computer controlled vehicles must be exact matches because if you attempt to use a transmission that is not cataloged as a direct cross reference, you will find that the engine and transmission computers will be incompatible. Always check the transmission Tag ID code. If the Tag ID of the proposed transmission does not exactly match the existing application, it will not work. Even if you can get a "different" transmission to physically fit, it will not operate properly and the PCM will spit out error codes. If you are interested in a transmission replacement (OEM to OEM), YourMechanic professionals in certain locales can assist with that. Please simply inquire based on your locale. If you have further questions or concerns, do not hesitate to re-contact YourMechanic.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Will a u140e trans from a 99 Lexus es300 interchange with a 99 Lexus RX 300? Fwd?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Muffler hanging from bottom of vehicle.

I recommend having a qualified mechanic, like one from YourMechanic, replace your severed exhaust pipe. The exhaust may have also damaged the manifolds of the engine and caused wiring damage to the exhaust sensors. The exhaust systems on these vehicles...

Q: security light blinking

The immobilizer may be preventing the engine from starting. If the security warning light is on constantly while you are trying to start the car, please refer to YourMechanic's immobilizer tutorial - suggestions for disabling. If you cannot disable the...

Q: need to find bleed point for coolant on 2001 lexus gs300

Hello, thank you for writing in. There is not a bleeder valve on the cooling system, as the newer models are designed to "self bleed". Your owner's manual can confirm this, and give you more information on how your specific...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.