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Service bulletin 00503

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10016159
Published by NHTSA2005-09-01
Manufacturer's number00503
Manufacturer's date2003-08-11
Replaces00503
NHTSA componentPOWER TRAIN

NHTSA's summary

TO IMPROVE THE TRANSMISSION SHIFT FEELING DURING SPECIFIC OPERATING MODES, THE ENGINE CONTROL MODULE (ECM) CALIBRATION HAS BEEN REVISED. ORIGINAL WAS NOT RECEIVED. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline

Vehicles listed
LEXUS RX3302004 to 2005

Listing a model year does not mean every vehicle of it is concerned: the document says which.