LSB006523

L-SB-0065-23
December 18, 2023
MIL ON With DTC P24517F
Service
Category
Vehicle Interior
Section
Meter/Gauge/Display
Market USA
Applicability
YEAR(S)
MODEL(S)
ADDITIONAL INFORMATION
2023
RX500H
VDS(s): BCMEA
Engine(s): T24
Introduction
Some 2023 model year RX 500h vehicles may exhibit a MIL ON condition with Diagnostic Trouble
Code (DTC) P24517F – Evaporative Emission System Switching Valve Actuator Stuck Off
present. This DTC may erroneously be displayed when the fault is related to DTC P14502A – Fuel
Tank Pressure Sensor Signal Stuck in Range. The Engine Control Model (ECM) (SAE term:
Powertrain Control Module/PCM) logic has been modified so DTC P24517F will not be
erroneously detected. Follow the Repair Procedure in this bulletin to address these conditions.
Production Change Information
This bulletin applies to vehicles produced BEFORE the Production Change Effective VIN
shown below.
MODEL YEAR
MODEL
ENGINE
PRODUCTION CHANGE EFFECTIVE VIN
2023
RX 500h
T24A-FTS
2T2BCMEA#PC009721
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
EL2322
Reprogram the ECM (PCM)
0.7
89661-0EK##*
8A
74
*Warranty claim MUST be submitted with the correct 10-digit OFP. Choose the correct OFP for the vehicle being repaired
by searching for the parts in the Electronic Parts Catalog using the VIN filter.
APPLICABLE WARRANTY
 This repair is covered under the Lexus Federal Emissions Warranty. This warranty is in effect
for 96 months or 80,000 miles, whichever occurs first, from the vehicle’s in-service date.
 Warranty application is limited to occurrence of the specified condition described in
this bulletin.
© 2023 Lexus, a division of Toyota Motor Sales, USA
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L-SB-0065-23
December 18, 2023
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MIL ON With DTC P24517F
Parts Information
PART NUMBER
PART NAME
QTY
89661-0EK##
Computer, Engine Control
1
NOTE
The ECM (PCM) should NOT be replaced as part of the Repair Procedure.
Required Tools & Equipment
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
Battery Diagnostic Tool
DCA-8000P T
1
*Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
REQUIRED EQUIPMENT
SUPPLIER
Techstream ADVI*
PART NUMBER
QTY
TSADVUNIT
Techstream 2.0
TS2UNIT
ADE
1
Techstream Lite
TSLITEPDLR01
Techstream Lite (Green Cable)
TSLP2DLR01
*Essential SST.
NOTE
 Only ONE of the Techstream units listed above is required.
 GTS+ software version 2023.04.003.02 or later is required.
 Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.
 Use Techstream or an approved J2534 interface to perform flash reprogramming updates. Visit
techinfo.toyota.com for more information regarding J2534 reprogramming.
© 2023 Lexus, a division of Toyota Motor Sales, USA
L-SB-0065-23
December 18, 2023
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MIL ON With DTC P24517F
Calibration Information
CALIBRATION ID
MODEL YEAR
MODEL
ENGINE
PREVIOUS
NEW
8A2220E08000
8A2220E08100
2023
RX 500h
T24A-FTS
8A2220E08400
8A2220E08200
8A2220E08300
Repair Procedure
1. Confirm the condition exists.
Does the vehicle exhibit a MIL ON condition with DTC P24517F (Evaporative Emission
System Switching Valve Actuator Stuck Off) present?

YES — Continue to step 2.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Use GTS+ to confirm if the ECM (PCM) calibration has been updated.
Is the calibration ID listed in GTS+ the latest ECM (PCM) calibration?

YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.

NO — Continue to step 3.
3. Save the freeze frame data (FFD) and then flash reprogram the ECM (PCM).
NOTE
 The battery diagnostic tool MUST be used in Power Supply Mode to maintain battery voltage
at 13.5V while flash reprogramming the vehicle.
 For details on how to use the battery diagnostic station, refer to the DCA-8000 Instruction Manual
located at TIS – Diagnostics – Tools & Equipment – Battery Diagnostics.
Follow the procedures outlined in L-SB-0036-22 GTS+ ECU Flash Reprogramming With
Security Signature, and flash the ECM (PCM) with the NEW calibration file update.
© 2023 Lexus, a division of Toyota Motor Sales, USA
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December 18, 2023
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MIL ON With DTC P24517F
Repair Procedure (continued)
4. Utilize the saved FFD and diagnose DTCs P14502A and P24517F.
Run a Health Check and refer to the Typical Malfunction Thresholds section in the applicable
Repair Manual to confirm which DTC(s) may be the root cause.
Refer to TIS, applicable model and model year Repair Manual:

2023 RX 500h (DTC P14502A):
Engine/Hybrid System – Engine Control – “T24A-FTS (Engine Control): SFI System (for
1Motor-HEV Model): P145011,P145015,P14502A,P14502F; Fuel Tank Pressure Sensor
Circuit Short to Ground”

2023 RX 500h (DTC P24517F):
Engine/Hybrid System – Engine Control – “T24A-FTS (Engine Control): SFI System (for
1Motor-HEV Model): P145011,P145015,P14502A,P14502F; Fuel Tank Pressure Sensor
Circuit Short to Ground”
5. Using GTS+, clear ANY DTCs and test-drive the vehicle in accordance with the driving pattern
described in the confirmation driving pattern to confirm the condition is no longer present.
Refer to TIS, applicable model and model year Repair Manual:

2023 RX 500h (DTC P14502A):
Engine/Hybrid System – Engine Control – “T24A-FTS (Engine Control): SFI System (for
1Motor-HEV Model): P145011,P145015,P14502A,P14502F; Fuel Tank Pressure Sensor
Circuit Short to Ground”

2023 RX 500h (DTC P14502A):
Engine/Hybrid System – Engine Control – “T24A-FTS (Engine Control): SFI System (for
1Motor-HEV Model): P24507E,P24517F; Evaporative Emission System Switching Valve
Actuator Stuck On”
© 2023 Lexus, a division of Toyota Motor Sales, USA