NHTSA ID Number: 10252251
Manufacturer Communication Number: TSB010421
TSB/Document Date: 2024-04-01
Summary
TSB: Some 2018 ? 2024 model year Toyota
vehicles equipped with an A25A-FKS, A25A-FXS, M20A-FKS, or M20A-FXS engine may exhibit one or more of the following conditions: ?Milky/discolored engine oil. ?An ?Oil Pressure Low? warning message on the Multi-information Display (MID). ?A MIL ON condition with Diagnostic Trouble Codes (DTCs) P05202A (Engine Oil Pressure Sensor/Switch ?A? Signal Stuck in Range) and/or P052477 (Engine Oil Pressure Too Low [Severe]) present. Moisture from blow-by gases condenses and accumulates in the engine oil during short trips in extreme cold weather. When the moisture in the oil freezes, the oil pressure may drop, and the aforementioned warning indicators may display. Follow the procedures in this bulletin to address these conditions.
2019 – 2022 Avalon HV:
Engine / Hybrid System – A25A-FXS (Cooling) – Cooling System –
On-Vehicle Inspection
2018 Camry:
Engine / Hybrid System – A25A-FKS (Cooling) – Cooling System –
On-Vehicle Inspection
2019 – 2024 Camry:
Engine / Hybrid System – A25A-FKS (Cooling) – Cooling System –
On-Vehicle Inspection
2018 – 2024 Camry HV:
Engine / Hybrid System – A25A-FXS (Cooling) – Cooling System –
On-Vehicle Inspection
2020 – 2024 Corolla:
Engine / Hybrid System – M20A-FKS (Cooling) – Cooling System –
On-Vehicle Inspection
2022 – 2024 Corolla Cross:
Engine / Hybrid System – M20A-FKS (Cooling) – Cooling System –
On-Vehicle Inspection
© 2024 Toyota Motor Sales, USA
T-SB-0104-21
Rev2
December 17, 2021
MIL ON With Low Oil Pressure DTCs P05202A and/or P052477 and
Milky/Discolored Engine Oil in Freezing Temperatures
Confirmation Procedure (continued)
2023 – 2024 Corolla Cross HV:
Engine / Hybrid System – M20A-FKS (Cooling) – Cooling System –
On-Vehicle Inspection
2019 Corolla Hatchback:
Engine / Hybrid System – M20A-FKS (Cooling) – Cooling System –
On-Vehicle Inspection
2020 – 2024 Corolla Hatchback:
Engine / Hybrid System – M20A-FKS (Cooling) – Cooling System –
On-Vehicle Inspection
2023 – 2024 Crown:
Engine / Hybrid System – A25A-FXS (Cooling) – Cooling System –
On-Vehicle Inspection
2024 Grand Highlander HV:
Engine / Hybrid System – A25A-FXS (Cooling) – Cooling System –
On-Vehicle Inspection
2020 – 2024 Highlander HV:
Engine / Hybrid System – A25A-FXS (Cooling) – Cooling System –
On-Vehicle Inspection
2023 – 2024 Prius:
Engine / Hybrid System – M20A-FXS (Cooling) – Cooling System –
On-Vehicle Inspection
2023 – 2024 Prius Prime:
Engine / Hybrid System – M20A-FXS (Cooling) – Cooling System –
On-Vehicle Inspection
2019 – 2024 RAV4:
Engine / Hybrid System – A25A-FXS (Cooling) – Cooling System –
On-Vehicle Inspection
2019 – 2024 RAV4 HV:
Engine / Hybrid System – A25A-FXS (Cooling) – Cooling System –
On-Vehicle Inspection
2021 – 2024 RAV4 Prime:
Engine / Hybrid System – A25A-FXS (Cooling) – Cooling System –
On-Vehicle Inspection
2021 – 2024 Sienna HV:
Engine / Hybrid System – A25A-FXS (Cooling) – Cooling System –
On-Vehicle Inspection
© 2024 Toyota Motor Sales, USA
Page 5 of 9
T-SB-0104-21
Rev2
December 17, 2021
Page 6 of 9
MIL ON With Low Oil Pressure DTCs P05202A and/or P052477 and
Milky/Discolored Engine Oil in Freezing Temperatures
Confirmation Procedure (continued)
2021 – 2024 Venza HV:
Engine / Hybrid System – A25A-FXS (Cooling) – Cooling System –
On-Vehicle Inspection
Did the cooling system hold pressure?
YES — Continue to step 3.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
3. Is an “Oil Pressure Low” warning displayed on the MID and/or are DTCs P05202A and/or
P052477 present?
YES — Go to Repair Procedure 1.
NO — Go to Repair Procedure 2 to ONLY address the milky/discolored oil condition.
Repair Procedure 1
1. Using Techstream, clear ANY DTCs.
2. Start the engine.
A. Use maintenance mode for hybrid models.
Refer to TIS, applicable model and model year Repair Manual:
2019 – 2022 Avalon HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2018 – 2024 Camry HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2023 – 2024 Corolla Cross HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2023 – 2024 Crown:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2024 Grand Highlander HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2020 – 2024 Highlander HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2023 – 2024 Prius:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2023 – 2024 Prius Prime:
General – Introduction – Repair Instruction – Inspection Mode Procedure
© 2024 Toyota Motor Sales, USA
T-SB-0104-21
Rev2
December 17, 2021
MIL ON With Low Oil Pressure DTCs P05202A and/or P052477 and
Milky/Discolored Engine Oil in Freezing Temperatures
Repair Procedure 1 (continued)
2019 – 2024 RAV4 HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2021 – 2024 RAV4 Prime:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2021 – 2024 Sienna HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2021 – 2024 Venza HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
B. Allow the engine to idle until the engine coolant temperature reaches 122°F.
C. Did the “Oil Pressure Low” warning display or did DTC(s) P05202A and/or
P052477 return?
YES — Continue to step 3.
NO — Go to Repair Procedure 2.
3. Replace the engine oil and oil filter.
4. Using Techstream, clear ANY DTCs.
5. Start the engine.
A. Use maintenance mode for hybrid models.
Refer to TIS, applicable model and model year Repair Manual:
2019 – 2022 Avalon HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2018 – 2024 Camry HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2023 – 2024 Corolla Cross HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2023 – 2024 Crown:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2024 Grand Highlander HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2020 – 2024 Highlander HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2023 – 2024 Prius:
General – Introduction – Repair Instruction – Inspection Mode Procedure
© 2024 Toyota Motor Sales, USA
Page 7 of 9
T-SB-0104-21
Rev2
December 17, 2021
Page 8 of 9
MIL ON With Low Oil Pressure DTCs P05202A and/or P052477 and
Milky/Discolored Engine Oil in Freezing Temperatures
Repair Procedure 1 (continued)
2023 – 2024 Prius Prime:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2019 – 2024 RAV4 HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2021 – 2024 RAV4 Prime:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2021 – 2024 Sienna HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
2021 – 2024 Venza HV:
General – Introduction – Repair Instruction – Inspection Mode Procedure
B. Allow the engine to idle until the engine coolant temperature reaches 122°F.
C. Did the “Oil Pressure Low” warning display or did DTC(s) P05202A and/or
P052477 return?
YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
NO — Continue to step 6.
6. Turn OFF the engine.
7. Remove and inspect the oil filler cap.
A. Check for ANY milky/discolored residue
on the underside of the filler cap
as shown.
Figure 3.
B. Wipe off ANY milky/discolored residue
with a clean shop towel.
8. Reinstall the oil filler cap.
9. Confirm the engine oil on the oil level gauge
(dip stick) no longer has a
milky/discolored appearance.
© 2024 Toyota Motor Sales, USA
T-SB-0104-21
Rev2
December 17, 2021
MIL ON With Low Oil Pressure DTCs P05202A and/or P052477 and
Milky/Discolored Engine Oil in Freezing Temperatures
Repair Procedure 2
1. Replace the engine oil and oil filter.
2. Remove and inspect the oil filler cap.
Figure 4.
A. Check for ANY milky/discolored residue
on the underside of the filler cap
as shown.
B. Wipe off ANY milky/discolored residue
with a clean shop towel.
3. Reinstall the oil filler cap.
4. Confirm the engine oil on the oil level gauge
(dip stick) no longer has a
milky/discolored appearance.
© 2024 Toyota Motor Sales, USA
Page 9 of 9
- 6X better wear protection on critical engine parts than...
- 1.3X better sludge protection than industry standards*
- 3X Stronger against viscosity breakdown than leading full...
- Protection for 10,000 miles between oil changes
- Meets or exceeds the following specifications: API SP/SN...
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: TSB010421
Replacement Service Bulletin Number:
MFR Communication Date: 2024-02-15
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: LANE DEPARTURE
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- [Notice] When you receive a used device, it may be a customer return resold by Amazon without inspection. You can exchange it for a new one through Amazon. As this situation is unavoidable, we sincerely apologize. For any issues, contacting us via Amazon's "Messages" is the best way. THINKSCAN 689BT Bidirectional Scan Tool Can Be Used Immediately After It is Turned On, Without Complicated Registration Process, Which is More Convenient & Quick.
- Full Bi-Directional Control & 3000+ Active Tests: Take control and test components like actuators, fuel injectors, relays, and cooling fans in real time. You’ll quickly see if the problem is in the part itself or the control module — saving you hours of guesswork and frustrating trial-and-error.
- Advanced ECU Coding Capabilities: Handle module matching and hidden feature activation with confidence. When you replace an ECU or want to customize settings, this obd2 scanner diagnostic bi directional tool gives you the professional-level capabilities you need without the dealership price tag.
- 34+ Useful Reset and Maintenance Functions: Complete everyday service tasks smoothly with a wide range of helpful reset and maintenance functions. Whether you’re keeping up with regular upkeep or tackling a specific job, this scanner makes maintenance simpler and less stressful for both DIYers and pros.
- Comprehensive Full System Diagnostics: Diagnose every major system — Engine, Transmission, ABS, SRS, TPMS, and more — all in one place. Finally stop wondering if you’re missing something important; get the full picture and clear codes with ease.
- Top Reasons to Choose the D7S OBD2 Scanner: XTOOL D7S car scan tool, an upgrade of XTOOL D7, offers comprehensive features for automotive technicians, workshops, and DIY enthusiasts 1. Upgraded Hardware: 2+64GB memory, rear camera, intuitive interface, foldable bracket 2. Complete Diagnostics: FCA
Autoauth, OE-level all system scan, 39+ maintenance services, 4K+ bidirectional, CANFD/DoIP protocol 3. Advanced Capabilities: ECU coding, PMI functions 4. Wide Compatibility: Support 10,000+ models, covering 99% vehicle brands 5. Multi-language: Available in 22+ languages, No IP Restrictions 6. 3-Year Updates: Save 300 bucks on software updates for the latest features and optimizations - 2026 Upgraded D7S Car Scanner Features: The newly 2026 D7S V2.0 scanner for car brings exciting features for advanced vehicle diagnostics and enhanced user experience 1. FCA AutoAuth: Now supports FCA SGW module for Chrysler, for Jeep, for Dodge (2018+), for Fiat (2017+), enabling faster vehicle communication without gateway restrictions 2. PMI (Offline ECU Programming): Allows for Ford, for Lincoln, and for Mazda ECU programming for new modules 3. Optimized Diagnostic Report 2.0: Personalized reports with logos and customer info for auto shops. Note: Compatibility varies by cars, please check before order
- Cost-effective ECU Coding Scan Tool for Specific Brands: Enhance your vehicle's performance with XTOOL D7S! This obd2 scanner all systems bidirectional offers advanced capabilities at an affordable price, supports online for BMW, for Benz and offline for BENZ, for MIT, along with PMI functions for Ford, for Mazda, and for Lincoln. Ideal for technicians and DIY enthusiasts, this automotive scanner diagnostic tool optimizes vehicle performance and enhances the driving experience. Note: Not for all cars and modules, please send car VIN to check the compatibility before purchase
- OE All System Diagnostic & 8 Pids Graphing: XTOOL D7S is a comprehensive all system bi directional obd2 scanner that delivers dealer-level diagnostics, completely controlling over your vehicle’s performance and health. This automotive scan tool can read and clear DTCs, view live data and ECU information, retrieve freeze frames, and perform active tests and full obd2 functions. This bi-directional scan tool can can identify your vehicle's make, model, and year information with just one click and show up to 8 PIDs live data with options for CSV viewing, playback, and recording for in-depth analysis. It is easy-to-use for both professionals and beginners, helping pinpoint issues efficiently
- 3 Years Software Update, Value for Money: With 3 years of software updates and 22+ languages(no IP restrictions), XTOOL D7S auto scanner code scanner ensures ongoing compatibility for the latest car models and improved diagnostic functions. This all system vehicle diagnostic scanner comes with a 30-day return policy and a 24-month repair for dependable performance. XTOOL are dedicated to your satisfaction, so enjoy seamless support and lifetime expert assistance. Should you encounter any issues or concerns, don’t hesitate to reach out XTOOL. D7S with newest update with 22 languages freely transfer without authorization, check details from setting-language or from XTOOL
- 🔥 Historical lowest pr-ice now on sa-le--hot se-lling.
- 【🎈6 Essential Resets: ABS Bleeding, Oil, EPB, SAS, Throttle, BMS】The BOSSCOMM IF745 obd2 scanner diagnostic tool swiftly purges air from brake lines to restore braking sensitivity, fine-tunes maintenance cycles to eliminate false alerts, resolves parking brake issues with one-click control, recalibrates steering sensors for stability, optimizes engine idling/acceleration for smoother performance, and deeply resets battery systems to extend lifespan and range via precise parameter adjustments.❗NOTE: Does NOT support bidirectional control, coding, or programming.
- 【✨10-in-1 OBD2 Functions | Beyond Basic Code Reading 】The BOSSCOMM IF745 scan tool’s DTC Lookup instantly translates fault codes into user-friendly explanations, its I/M Readiness feature streamlines emissions testing with a single tap, and Freeze Frame lets you pinpoint the exact moment of a fault for in-depth root-cause diagnosis. Combined with a live data dashboard and advanced diagnostics (O2S, OBMon, EVAP), it delivers comprehensive insights for confident troubleshooting.
- 【🛒Deep Diagnostics for All Vehicle System Modules】Beyond code reading/clearing and ECU information retrieval, our all-in-one data stream feature lets you inspect all current fault codes and their locations across the vehicle’s systems. This vehicle code reader helps you turn off dashboard warning lights and perform a comprehensive self-check of your car at home—no more back-and-forth trips to the repair shop or hefty inspection fees.
- 【✅Compared to BOSSCOMM IF742, IF745 Offers Full-System Diagnostics】The BOSSCOMM IF745 car diagnostic scanner is an upgraded model of IF742. In addition to supporting all OBD2 Code Reader functions and 6 reset options (ABS/EPB/SAS/BMS/Oil/Throttle), it expands diagnostics from 4 systems (Check Engine/ABS/SRS/Transmission) to vehicle All systems, including Steering, Suspension, and Body Electronics. This provides deeper, more comprehensive diagnostic capabilities.
This product presentation was made with AAWP plugin.