2020 Lexus RX350 Technical Service Bulletins

87 technical service bulletins (TSBs) are on record for the 2020 Lexus RX350. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10238138May 15, 2023Equipment. SPOC: Effective immediately, Lexus is issuing a stop sale on part numbers 85212-YZZ2L-LX & 85212-YZZ2M-LX, which may have a quality concern relating to a missing kit component (mispack). Lexus is requesting the return of ALL Dealer inventory of these parts to your facing PDC for credit and inspection.
• 10235225Feb 14, 2023Equipment. OBSOLETE NOTICE February 14, 2023: This bulletin is now obsolete. Please see L-SB-0007-23
• 10235224Feb 14, 2023Equipment. TSB: Some 2020 ? 2022 model year vehicles equipped with 17CY+ Panasonic Audio (versions less than 1226) and Navigation (versions less than 1225 or 1245 with 20 Teammate) may exhibit one or more of the following conditions: ?Navigation reset while entering a destination. ?Voice command does not recognize Starbucks. ??Unable to establish audio connection? message, and Alexa is unable to resume after Android AutoTM…
• 10235219Feb 9, 2023Fuel system. DL: On December 20, 2022, a settlement of claims for certain low pressure fuel pumps was approved by the federal court. The settlement includes Lexus?s agreement to provide a Customer Support Program for certain 2013-2020 model year (MY) vehicles originally equipped with low pressure fuel pumps repaired under Safety Recall 20LA01 or Special Service Campaign 21LC01.
• 10235215Feb 9, 2023Fuel system, Electrical system. TSB: Some 2013 ? 2020 model year Lexus vehicles may exhibit a hard start and/or MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs): ?DTC P0171 and/or P0174 (System Too Lean Bank 1/Bank 2) ?DTC P0087 Fuel Rail / System Pressure ? Too Low Techstream data list analysis may reveal positive fuel trims including a no pressure condition verified by a manual fuel pressure gauge. Follow the…
• 10235210Feb 2, 2023Back-over prevention (rear camera), Air bags. TSB: Some 2016 ? 2022 model year RX 350 vehicles may exhibit a droning noise from the exhaust system at takeoff or under light acceleration. Countermeasure parts are available to reduce the droning noise. Follow the Repair Procedure in this bulletin to address this condition.
• 10230361Dec 7, 2022Equipment. TSB: Some 2018 ? 2022 model year Lexus vehicles equipped with the Enform? 2.0 Navigation System, require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software. The SST is used with applicable vehicles to deliver the update, however, the process for generating license keys differs from previous generations. Before attempting to perform a map update, the expiration…
• 10224172Sep 15, 2022Body and structure, Exterior lighting. TSB: Some 2018 ? 2019 model year LS 500 and LS 500h and 2019 ? 2022 model year RX 350 and RX 450h vehicles may exhibit a condition where the rear combination lamp front corner on the right and/or left-hand side expands and contacts the body. This condition may occur in hot and/or sunny conditions and may result in paint chipping on the body panel. Follow the Repair Procedure in this bulletin to address this condition
• 10220211Aug 1, 2022Visibility (wipers, defrost, mirrors). TSB: Some 2017 ? 2022 model year RX 350 and RX 450h vehicles may exhibit water leaking from the moon roof when going through a high-pressure rinse cycle car wash. In most cases, a small amount of water is either missing or bouncing off the rain gutter and dripping into the interior (center console, seat, driver, etc.).
• 10217794Jul 15, 2022Transmission and drivetrain. TT: Some 2019-2022 model year RX350/L AWD equipped vehicles may have had the LX 75W-85 GL-5 gear oil used during assembly. ?The difference between the LT and LX type gear oil is only relevant to models equipped with Limited Slip type (Dynamic Torque Vectoring) AWD systems.
• 10224115Jun 24, 2022Body and structure. TSB: Some 2019 ? 2022 model year RX 350 and 2018 ? 2022 model year RX 450h vehicles may exhibit a rattle noise from the sliding roof assembly when it is in the tilted open position while driving over a bumpy road. Follow the Repair Procedure in this bulletin to address this condition
• 10220190Jun 24, 2022Visibility (wipers, defrost, mirrors). TSB: Some 2019 ? 2022 model year RX 350 and 2018 ? 2022 model year RX 450h vehicles may exhibit a rattle noise from the sliding roof assembly when it is in the tilted open position while driving over a bumpy road. Follow the Repair Procedure in this bulletin to address this condition
• 10224112Jun 20, 2022Engine cooling. TSB: This Service Bulletin provides a procedure to properly perform the Techstream ?Control the Injection Mode? active test in some 2016 ? 2022 model year Lexus vehicles equipped with an FKS engine
• 10220187Jun 20, 2022Engine cooling. TSB: This Service Bulletin provides a procedure to properly perform the Techstream ?Control the Injection Mode? active test in some 2016 ? 2022 model year Lexus vehicles equipped with an FKS engine
• 10220153May 13, 2022Other or unknown. TT: To improve guest support of telematics connected services features, additional resources have been provided in the Service Lane - Knowledge Center.
• 10214355Apr 13, 2022Equipment. Lexus Safety Recall and Service Campaign - Technician Certification Requirements 4.13.2022
• 10214348Mar 24, 2022Equipment. TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating parameters) not being established, vehicle settings and/or network/cellular coverage concerns.
• 10214330Mar 21, 2022Engine cooling. TT: Some 17-22MY RX350 vehicles with engine serial numbers that start with F or G, may experience an engine oil leak condition from the No.2 Oil pan. This issue is currently under investigation. Please take detailed pictures of the location of the oil pan leak condition before repair. If the condition is on applicable vehicles with engine serial numbers that do not start with F or G, disregard and proceed with…
• 10210371Mar 8, 2022Engine. TT: Some 2017-2022 RX350 vehicles may experience an engine oil leak condition from the No.2 Oil pan. This issue is currently under investigation. Please take detailed pictures of the location of the oil pan leak condition before repair.
• 10210364Mar 3, 2022Electrical system. TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating parameters) not being established, vehicle settings and/or network/cellular coverage concerns
• 10209023Feb 24, 2022Air bags. TSB: Some 2005 ? 2022 model year Lexus vehicles that have undergone water intrusion may exhibit a condition in which a musty smell is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The purpose of this service bulletin is to provide general guidelines and procedures for odor remediation.
• 10209006Feb 9, 2022Equipment. TSB: Some 2020 ? 2022 model year Lexus vehicles equipped with Pioneer Audio (version 1804) or earlier may exhibit one or more of the following conditions: ?Abnormal Bluetooth® Audio Mode transition. ?Difficult radio tune knob operation when selecting audio source. Some 2020 ? 2021 model year Lexus vehicles equipped with Pioneer Audio (version 1799) or earlier may exhibit one or more of the following conditions…
• 10207962Jan 28, 2022Electrical system. TSB: This Service Bulletin includes guidelines meant to help determine whether to repair or replace a wire harness assembly based on damage type. This Service Bulletin should be used in conjunction with the applicable model and model year Electronic Wiring Diagram (EWD) and/or Repair Manual.
• 10207957Jan 20, 2022Electrical system, Equipment. TT: Some guests may experience the inability to activate the Lexus Enform Remote app or the Lexus Enform Remote becoming inoperative when attempting to send commands to the vehicle. To simplify the diagnosis of this system and prevent the unnecessary replacement of parts, please refer to the procedure below.
• 10207945Jan 12, 2022Wheels, Tires, Equipment. POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground and spare tires currently in use by Lexus. This information must be kept near the point of vehicle sale and be available to any customer that requests it. Customers can find this information on the Owner?s section of Lexus.com. Dealers can locate a copy of this guide on the Claims Processing & Resource Center in…
• 10203554Oct 15, 2021Equipment. TT: To assist with the early detection and early resolution of audio related concerns, it may be requested as part of the remanufactured head unit return to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by audio suppliers, FTS, and/or FPEs.
• 10202486Sep 14, 2021Equipment, Fuel system. TSB: Some 2016 ? 2022 model year RX 350 and 2018 ? 2022 model year RX 350L vehicles may exhibit a knocking noise from the fuel tank area at idle, vehicle stationary, with a full tank of gasoline. Follow the Repair Procedure in this bulletin to address this condition.
• 10202453Sep 3, 2021Forward collision avoidance. TT: When used in conjunction with the Repair Manual, these Blind Spot Monitor, Forward Recognition Camera, and Front Millimeter Wave Radar tips leverage SSTs and readily available tools to support target placement in varying shop environments.
• 10202451Sep 3, 2021Equipment. TSB: Some 2020 ? 2021 model year vehicles equipped with 17CY+ Panasonic Navigation (version 1150) or earlier and Audio (version 1163) or earlier may exhibit one or more of the following conditions: ?Poor map screen touch operation. ?Navigation system reset. ?Climate temperature control difficult to operate. ??Waiting for the Beep? message displayed, voice recognition does not start when pressing the push to talk…
• 10201401Jul 26, 2021Equipment. TSB: Some 2007 ? 2022 model year Lexus vehicles in particular geographic areas may exhibit a condition where the HVAC evaporator drain hose has become obstructed with an insect nest. An insect repellent drain hose tip (ARINIX® Tip) is available to help minimize future occurrences of this environmental condition. For some models, a new drain hose is required to properly fit the ARINIX® Tip. Follow the procedures in…
• 10201303Jul 26, 2021Transmission and drivetrain, Engine. TT: Some 2019-2022 model year RX350/L AWD equipped vehicles may have had the LX 75W-85 GL-5 gear oil used during assembly. ?The difference between the LT and LX type gear oil is only relevant to models equipped with Limited Slip type (Dynamic Torque Vectoring) AWD systems. ?For vehicles with standard Non-LSD AWD systems, the use of LX type gear oil proves no issue to substitute for the LT type gear oil typically…
• 10201394Jul 20, 2021Engine cooling. TSB: This Service Bulletin provides a procedure to properly perform the Techstream ?Control the Injection Mode? active test in some 2016 ? 2021 model year Lexus vehicles equipped with an FKS engine.
• 10201353Jul 6, 2021Transmission and drivetrain. TT: Some 2015-2021 model year vehicles equipped with Dynamic Torque Control AWD system may experience a ?Noise? or ?Abnormal Operation? condition from the rear differential front coupling. In some cases, even an ?AWD System Message? with or without a DTC may be present with or without other conditions present.
• 10198149May 24, 2021Equipment. Pol: updates to the 2014-2021 lexus universal flat rate manual
• 10198143May 20, 2021Equipment, Engine cooling. TSB: Some 2018 ? 2021 model year RX 350 vehicles may exhibit a MIL ON condition with one or more of the following companion cylinder misfire Diagnostic Trouble Code (DTC) combinations: ?P030100 and P030400 (Cylinders 1 and 4 Misfires Detected). ?P030200 and P030500 (Cylinders 2 and 5 Misfires Detected). ?P030300 and P030600 (Cylinders 3 and 6 Misfires Detected).
• 10190468Mar 31, 2021Air bags. Lexus Safety Recall and Service Campaign - Technician Certification Requirements
• 10190466Mar 29, 2021Seat belts, Vehicle speed control. TSB: Some 2016 ? 2021 model year North American Produced (NAP) TMMC-built RX 350 and RX 450h vehicles may exhibit a condition in which the hood release cable is binding, seizing, or sticking. The hood lock control cable assembly may be corroding and begin to seize, increasing the effort required to pull the release lever and release the hood latch. Follow the Repair Procedure in this bulletin to address this…
• 10190458Mar 16, 2021Back-over prevention (rear camera), Electrical system. TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating parameters) not being established, vehicle settings and/or network/cellular coverage concerns.
• 10190457Mar 16, 2021Equipment. TT: Some vehicles equipped with Dynamic Navigation may experience a pop-up message notifying them that their map update service will end soon. The date that is shown could be more than one year in the future. This does not indicate any issues with the vehicle and is only informing the user of the expiration date.
• 10190455Mar 16, 2021Steering, Wheels. TT: Some customers may encounter Bluetooth® connectivity concerns such as: ?Difficulty to pair the phone. ?Intermittent Bluetooth® failure to connect to the vehicle when first turning on the vehicle. ?Various Bluetooth® Audio functions are no longer functioning with customer?s phone such as ability to change the track using the steering wheel controls. These concerns can be caused by changes made on the customer?s…
• 10185787Dec 11, 2020Equipment. OBSOLETE NOTICE December 11, 2020: This bulletin is now obsolete. Please see L-SB-0043-20.
• 10185774Dec 10, 2020Brakes. TSB: Some 2020 ? 2021 model year Lexus vehicles equipped with Navigation (version 1060) or earlier and Audio (version 1060) or earlier may exhibit one or more of the following conditions: ?Display screen distortion/pixilation. ?iOS device would not connect until disconnecting and reconnecting USB cable. ?iOS device would not connect until ACC OFF > ON.
• 10184551Nov 13, 2020Equipment, Electrical system. TT: Some vehicles may experience an issue related to the DCM, the following information is consolidating the available diagnostic information in one document.
• 10184547Nov 11, 2020Body and structure, Latches, locks and linkages. TSB: Some 2016 ? 2021 model year North American Produced (NAP) TMMC-built RX 350 and RX 450h vehicles may exhibit a condition where the hood release cable is binding, seizing, or sticking. The hood lock control cable assembly may be corroding and begin to seize, increasing the effort required to pull the release lever and release the hood latch. Follow the Repair Procedure in this bulletin to address this condition.
• 10182961Oct 30, 2020Equipment, Visibility (wipers, defrost, mirrors). TT: HVAC drain tube is found to blocked/clogged.
• 10183292Oct 27, 2020Fuel system, Back-over prevention (rear camera). TSB: Some 2016 ? 2021 model year RX 350 and 2018 ? 2021 model year RX 350L vehicles may exhibit a knocking noise from the fuel tank area at idle, vehicle stationary, with a full tank of gasoline. Follow the Repair Procedure in this bulletin to address this condition.
• 10183275Oct 20, 2020Back-over prevention (rear camera). TT: To assist with the early detection and early resolution of audio related concerns, it may be requested as part of the remanufactured head unit return to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by audio suppliers, FTS, and/or FPEs.
• 10183269Oct 16, 2020Fuel system. TSB: This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for some 2008 ? 2021 model year Lexus vehicles.
• 10182980Oct 9, 2020Equipment. TSB: 2020 model year Lexus vehicles are equipped with driver side floor mat retaining clips to secure the floor mat in the correct position. In addition, some models may also utilize retaining clips for passenger side and rear seat floor mats. During Pre-Delivery Service (PDS), follow the appropriate Installation Procedure to attach the driver side, and if applicable, the passenger side and rear seat floor mats to…
• 10179766Aug 12, 2020Electrical system, Equipment. TSB: Some 2018 ? 2020 model year Lexus vehicles equipped with the Enform? 2.0 Navigation System require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software. The SST is used with applicable vehicles to deliver the update; however, the process for generating license keys differs from previous generations. Before attempting to perform a map update, the head unit?s…

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