Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS1999RX 300 AWD V6-3.0L (1MZ-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULETECHNICAL SERVICE BULLETINSECM/TCM - DIAGNOSTIC TESTER RESET MEMORY FUNCTION
1999 Lexus RX 300 AWD V6-3.0L (1MZ-FE)
ECM/TCM - Diagnostic Tester Reset Memory Function
1999 Lexus RX 300 AWD V6-3.0L (1MZ-FE)SECTION ECM/TCM - Diagnostic Tester Reset Memory Function
TRANSMISSION & CLUTCH
TC005-98
Title:
RESET MEMORY FUNCTION
Models:
'99 ES 300, '99 RX 300
December 25, 1998
Introduction
Diagnostic Tester Software beginning with Version 5.1a-1 provides a "Reset Memory" function which should be used to reset ECM "Learned Values" after Transmission replacement or overhaul, and/or ECM replacement.
Caution:
Failure to perform this function may cause an increase in the time to readjust the "Learned Values".
Procedure
TC005-98
Title:
RESET MEMORY FUNCTION
Models:
'99 ES 300, '99 RX 300
December 25, 1998
Introduction
Diagnostic Tester Software beginning with Version 5.1a-1 provides a "Reset Memory" function which should be used to reset ECM "Learned Values" after Transmission replacement or overhaul, and/or ECM replacement.
Caution:
Failure to perform this function may cause an increase in the time to readjust the "Learned Values".
Procedure
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.