2021 Toyota Sienna Hybrid technical service bulletins
177 technical service bulletins and manufacturer communications cover the 2021 Toyota Sienna Hybrid, including 12 warranty extensions.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Although the flow shut-off valve is covered by Toyota’s New Vehicle Limited Warranty for 36 months or...
- Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota’s New Vehicle...
- Customer support program 24TE04
- Engine
- Frequently Asked Questions CUSTOMER SUPPORT PROGRAM 24TE04 Multiple Model & Model Year Toyota Vehicles...
- This Customer Support Program provides coverage as it applies to Flow Shut-off Valve Coolant Leak on...
- Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the...
- This bulletin includes basic procedures for performing a rescue charge at battery on high voltage (HV)...
- Obsolete notice
- Obsolete notice
- Obsolete notice
- Some 2018 – 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System...
- Condition in which a musty odor is present
- Some customers may experience a condition in which the 2021-2025 Sienna HV 2nd row FRAME SUB-ASSY, No.1...
- Sloshing or splashing noise from inside one or more door panels when driving, opening and/or closing a...
- Technical instructions for customer support program 22TE09 HV floor under wire harness and rear traction...
- The specific condition covered by this program is for a small engine coolant leak that can occur from the...
- 22TD04
- Condition in which an “Engine Maintenance Required” message is displayed in the Multi-Information Display...
- The air conditioning dye injection tool kit has been developed to aid in identifying the location of air...
- Included vehicles are equipped with Toyota Safety Sense (TSS) 3.0, which includes the Pre-Collision System...
- Frequently Asked Questions SPECIAL SERVICE CAMPAIGN 25TC03 Certain 2023 Model Year Corolla Cross Certain...
- Technical instructions for 25TC03 reprogramming for forward recognition camera certain 2023 corolla cross...
- To assist with the early detection and early resolution of audio related concerns you may be asked to...
- Obsolete notice
- Some 2018 – 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System...
- The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master...
- Some 2021-2025 MY Highlander HV, Sienna HV, RAV4, and RAV4 HV, may exhibit an oil leak from the area where...
- When certain vehicle ECUs are replaced, the ECU Security Key must be written in order for that ECU to...
- Obsolete notice
- Condition in which the front passenger carpet is untucked and torn at the center console, as shown in...
- TT: Engine Oil Leak between the Lower Oil Pan and Crank Case
- This bulletin includes basic procedures for performing a rescue charge at battery on high voltage (HV)...
- Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical...
- To prevent brake rotor rust from forming during transportation and storage, wheel film will be used...
- The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix...
- Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal...
- Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad...
- Technical instructions for customer support program 22TE09 HV floor under wire harness and rear traction...
- Some customers have expressed concern that the wireless functions of their Key Fob stop working
- Condition in which a musty odor is present
- This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for...
- After jump-starting, the vehicle may experience a no-start condition and multiple DTCs including U010087
- Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal...
- MIL ON condition with Diagnostic Trouble Code (DTC) C1AC200 (Rear Side Radar Sensor Beam Axis...
- Some drivers of 2021 – 2024 model year Sienna Hybrid vehicles may be sensitive to the momentary transition...
- Customers have expressed concerns about the performance of Qi Wireless Chargers
- When certain vehicle ECUs are replaced, the ECU Security Key must be written in order for that ECU to...
- Obsolete notice
- This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life...
- The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master...
- DP: Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota?s New...
- Ti: technical instructions for customer support program 22TE09 HV floor under wire harness and rear...
- Some 2018 ? 2022 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System...
- One or more of the following conditions: ?Milky/discolored engine oil
- MIL ON condition with Diagnostic Trouble Code (DTC) P060694 (Hybrid/EV Powertrain Control Module Processor...
- TT: Some 2020-2022 vehicles equipped with North American Produced (NAP) A25A-FKS/FXS engines may...
- TT: Vehicle option selection during identification process when connecting Techstream for diagnosis/repair.
- Hybrid system warning lamp occurring in below-freezing temperatures (below 32°F or 0°C). After performing...
- Toyota vehicles equipped with an A25A-FKS or A25A-FXS engine may exhibit reduced engine power and/or a MIL...
- Condition in which the fuel gauge reading changes when the vehicle is driven up or down an incline and...
- TT: Some 19CY LG DCM equipped vehicles may not be able to complete the firmware update due to not having...
- TT: A very small percentage of customers experience operational difficulties with some telematics features...
- MIL ON condition with one or both of the following Diagnostic Trouble Codes (DTCs) present: ?P24517F ?...
- TT: After jump-starting, the vehicle may experience a no-start condition and multiple DTCs including U010087
- DP: Although the high-pressure fuel pump is covered by Toyota?s New Vehicle Limited Warranty for 5 years...
- TT: Some 2021- 2023 Sienna HV vehicles may duplicate an abnormal noise (Growl, Humming and/or other) from...
- TT: MIL ON with DTC(s) present for Hybrid/EV Battery Cooling Fan Circuit.
- TT: To assist with the early detection and early resolution of audio related concerns, it may be requested...
- MIL ON condition with Diagnostic Trouble Codes (DTCs) P0087 (Fuel Rail/System Pressure ? Too Low) and/or...
- Some 2018 ? 2022 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System,...
- TT: Vehicle option selection during identification process when connecting Techstream for diagnosis/repair
- TT: After jump-starting, the vehicle may experience a no-start condition and multiple DTCs including U010087
- TT: Vehicles listed above equipped with a Denso Ten radio (Entune Audio Plus or Premium Audio) may exhibit...
- Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the...
- When certain vehicle ECUs are replaced, the ECU security key must be written in order for that ECU to...
- TT: Some Model Year 2018-2021 vehicles equipped with A25A-FKS/FXS or M20A-FKS/FXS engines may display the...
- DP: A Toyota Genuine Accessory Dash Camera was installed in the involved vehicles
- Paint stains after the removal of Rapgard?. The paint stains may appear to be under the clear coat but are...
- One or more of the following conditions: ?Diagnostic Trouble Code (DTC) B15A804 is present in current or...
- This bulletin includes basic procedures for performing a rescue charge at battery on high voltage (HV)...
- Condition in which a musty smell is present
- TT: To improve customer support of telematics connected services features, additional resources have been...
- Some 2018 model year Camry and Camry Hybrid, 2019 model year Avalon and Avalon Hybrid, 2020 ? 2021 model...
- Obsolete notice
- TSB This Service Bulletin includes guidelines meant to help determine whether to repair or replace a wire...
- TT: Some customers may experience the inability to activate Remote Connect or Remote Connect becoming...
- POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground...
- One or more of the following conditions: ?Milky/Discolored engine oil
- One or more of the following conditions: ?WiFi intermittently inoperative
- TT: Some 2021 model year Sienna HV vehicles may exhibit a scraping noise from the front when turning.
- Clicking/creaking noise from one or more of the wheels while driving
- TSB During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce...
- 2022 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat...
- Updates to the 2014-2021 toyota universal flat rate manual
- Condition of inoperative remote functions from the app or key fob, such as remote engine start or door...
- TT: Some vehicles equipped with Premium Audio systems may experience an inoperative condition that...
- Depleted 12V auxiliary battery when in IG-OFF due to a condition in which the Hybrid Vehicle Electronic...
- TT: Confirm the scraping noise is coming from the front of the vehicle and not the rear
- This Service Bulletin provides a procedure to properly perform the Techstream ?Control the Injection Mode?...
- Toyota Safety Recall and Service Campaign
- Paint stains after the removal of Rapgard?. The paint stains may appear to be under the clear coat but are...
- TT: Any customer brake concern in the New York and Boston Regions ONLY.
- TT: Some 2021 model year Sienna vehicles may exhibit a condition where the power slide door sensor...
- Replacement certification labels (the vinyl label installed on the driver door or door post) and VIN...
- Some customers may notice an abnormal brake feel in their 2021 model year Sienna Hybrid vehicle that could...
- TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating...
- Following concern: ?Distorted screen when using Apple CarPlay® while making a hands-free phone call
- TT: Some vehicles may experience an issue related to the DCM, the following information is consolidating...
- When certain vehicle ECUs are replaced, the ECU security key must be written in order for that ECU to...
- A battery in a stored vehicle is subject to conditions that can reduce its performance and service life
- During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce...
- An initialization procedure is required to activate the Entune? 3.0 App Suite Connect for Audio, Audio...
- Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers
- Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery
- 2021 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat...
- Hybrid vehicles are equipped with two types of batteries: ?Hybrid Vehicle (HV) battery ?Auxiliary (12V)...
- TT: Unibody vehicles commonly have lashing holes on the under body used for securing the vehicle during...
- Replacement vin plates.
- Product general information.
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