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 MANUALSLEXUS2006RX 400H AWD V6-3.3L (3MZ-FE) HYBRIDREPAIR AND DIAGNOSISHYBRID DRIVE SYSTEMSPOWER CONTROL SYSTEMTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSHYBRID SYSTEM - MIL ON/DTC P0A7A/INFO CODE 325
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
Hybrid System - MIL ON/DTC P0A7A/Info Code 325
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION Hybrid System - MIL ON/DTC P0A7A/Info Code 325
ENGINE
EG002-06
March 1, 2006
Title: M.I.L. "ON" DTC P0A7A, INFORMATION CODE 325
Introduction:
Some 2006 RX 400h vehicles may exhibit a M.I.L. "ON" condition with Diagnostic Trouble Code (DTC) P0A7A and information code 325. The service parts and procedures in this bulletin apply ONLY when certain specific parameter values are confirmed through Freeze Frame Data. An updated inverter/converter is available to correct this specific condition.
Applicable Vehicles and Production Change Information;
2006 model year RX 400h vehicles produced BEFORE the Production Change
Effective VINs shown.
Parts Information
Warranty Informtion:
Applicable Warranty*:
This repair is covered under the Lexus Hybrid Component Warranty. This warranty is in effect for 96 months or 100,000 miles, whichever occurs first, from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Required SSTs:
NOTE: Additional Diagnostic Tester Kits, CAN Interface Modules, Program Cards, or other SSTs may be ordered by calling SPX/OTC at 1-800-933-8335.
Repair Procedure:
1. Access the DTC Freeze Frame Data on the Diagnostic Tester.
2. Print copies of the following and keep with the hard copy of the repair order:
- DTC (P0A7A) Freeze Frame Data
- Information Code (325) Freeze Frame Data
3. Inspect the Freeze Frame Data Lists and confirm that the listed criteria are met.
NOTE: If ANY of the criteria above are different than specified, this TSB does NOT apply. Proceed with the diagnostic instructions outlined for DTC P0A7A in the Repair Manual.
4. Proceed with replacement of the inverter assembly, as outlined in the Technical Information System (TIS), 2006 model year RX 400h Repair Manual: P310 Hybrid Vehicle Control: Inverter with Converter: Removal/Installation.
EG002-06
March 1, 2006
Title: M.I.L. "ON" DTC P0A7A, INFORMATION CODE 325
Introduction:
Some 2006 RX 400h vehicles may exhibit a M.I.L. "ON" condition with Diagnostic Trouble Code (DTC) P0A7A and information code 325. The service parts and procedures in this bulletin apply ONLY when certain specific parameter values are confirmed through Freeze Frame Data. An updated inverter/converter is available to correct this specific condition.
Applicable Vehicles and Production Change Information;
2006 model year RX 400h vehicles produced BEFORE the Production Change
Effective VINs shown.
Parts Information
Warranty Informtion:
Applicable Warranty*:
This repair is covered under the Lexus Hybrid Component Warranty. This warranty is in effect for 96 months or 100,000 miles, whichever occurs first, from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Required SSTs:
NOTE: Additional Diagnostic Tester Kits, CAN Interface Modules, Program Cards, or other SSTs may be ordered by calling SPX/OTC at 1-800-933-8335.
Repair Procedure:
1. Access the DTC Freeze Frame Data on the Diagnostic Tester.
2. Print copies of the following and keep with the hard copy of the repair order:
- DTC (P0A7A) Freeze Frame Data
- Information Code (325) Freeze Frame Data
3. Inspect the Freeze Frame Data Lists and confirm that the listed criteria are met.
NOTE: If ANY of the criteria above are different than specified, this TSB does NOT apply. Proceed with the diagnostic instructions outlined for DTC P0A7A in the Repair Manual.
4. Proceed with replacement of the inverter assembly, as outlined in the Technical Information System (TIS), 2006 model year RX 400h Repair Manual: P310 Hybrid Vehicle Control: Inverter with Converter: Removal/Installation.
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.