2020 Toyota Tundra Technical Service Bulletins

159 technical service bulletins (TSBs) are on record for the 2020 Toyota Tundra. 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.

• 10178524Jul 30, 2020Engine cooling. TT: HVAC drain tube is found to be blocked/clogged.
• 10178787Jul 20, 2020Electrical system. TT: The new DCA-8000 Diagnostic Charger may cause your facility?s Ground Fault Circuit Interrupter (GFCI) breaker to trip. A GFCI breaker can be tripped for various reasons, one of the reasons may be related to the DCA-8000. We are investigating this issue to determine the root cause. Other reasons the GFCI breaker may trip ?Circuit demand is too high for GFCI rating ?Worn out GFCI internal contacts ?Improper…
• 10177779Jun 23, 2020Engine cooling. TT: Repairing a 1234YF HVAC system on a gas powered (non-hybrid) Toyota vehicle may require additional compressor oil to complete the repairs. The various 1234YF compressor oils (ND-12, PS-D1, or VC100YF) are available through the Toyota Approved Dealer Equipment website.
• 10177592Jun 12, 2020Engine. TT: The Toyota Quality group is looking to better understand our customers expectation regarding vehicle drivability. Specifically, we are looking at vehicle surge/hesitation condition (inconsistent acceleration) and would like to recover detailed customer voice and vehicle data.
• 10176504May 18, 2020Electrical system, Equipment. 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.
• 10174921Apr 23, 2020Equipment. TT: Due to the challenges caused by the COVID-19 virus threat, some dealers are experiencing reduced traffic into their stores and causing dealer stock to age.
• 10174874Apr 17, 2020Body and structure. TSB: Some 2018 ? 2020 model year Sequoia and Tundra vehicles equipped with a sliding sunroof or moonroof may exhibit a binding, seizing, or sticking condition when attempting to open or close. In some cases, a clicking noise is present when the sliding sunroof or moonroof is stuck open or closed. This condition may be caused by rusted or seized sliding roof cables. Follow the Repair Procedure in this bulletin to…
• 10174896Apr 9, 2020Visibility (wipers, defrost, mirrors), Lane departure. TT: The blind spot monitor (BSM) sensor angle inspection is used to confirm that the BSM sensor is within the specified angle before performing axis beam adjustment. When used in conjunction with the repair manual, these BSM tips leverage SSTs and readily available tools to support sensor angle confirmation in varying shop environments.
• 10174890Apr 6, 2020Equipment. TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin Nos. PG021-88, PG015-89, PG0015-90, PG002-91, PG002-93, PG005-97, PG007-01, PG007-07, PG006-01, PG004-97, T-SB-0144-08, and T-SB-0304-17. The aforementioned bulletins are obsolete, and any printed versions should be discarded. Replacement certification labels (the vinyl label installed on the driver door or door post)…
• 10173991Mar 31, 2020Body and structure. TSB: Some 2007 ? 2020 model year Tundra vehicles may exhibit corrosion or paint blistering on the front and/or rear lower door sill(s). Follow the Repair Procedure in this bulletin to address this condition.
• 10173990Mar 30, 2020Electrical system, Equipment. Some 2020 model year vehicles equipped with Audio Plus (version 1021) or Premium Audio (version 1021) or earlier may exhibit one or more of the following conditions: ?Barge in function defaulted to OFF ?Limited phone book grammar ?Difficult Hand Free operation ?Abnormal Electronic Owner?s Manual operation ?Music does not automatically resume when using Android Auto?
• 10173969Mar 19, 2020Electrical system. Some 2020 model year Tundra vehicles equipped with Audio Plus (version 1186) or earlier may exhibit one or more of the following conditions: ?WiFi intermittently inoperative ?DTC B15DB present ?Changing the Auto Relock Timer setting also changes the Remote 2-Press unlock setting Some 2020 model year Tundra, RAV4, RAV4 Hybrid, Highlander, or Highlander Hybrid vehicles equipped with Audio Plus (version 1210), or…
• 10173968Mar 18, 2020Air bags, Forward collision avoidance. TSB: All 2018 ? 2021 model year Sequoia, Tacoma, and Tundra vehicles and All 2020 ? 2021 model year 4Runner vehicles are equipped with Pre-collision System (PCS) and Dynamic Radar Cruise Control (DRCC) as part of the Toyota Safety Sense (TSS) package. The PCS and DRCC systems are designed to help mitigate a potential collision and maintain a pre-determined traveling distance.
• 10190459Mar 16, 2020Electrical system, Back-over prevention (rear camera). 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.
• 10173966Mar 12, 2020Equipment. Safety Recall and Service Campaign - Technician Certification Requirements
• 10173805Mar 10, 2020Electrical system, Brakes, Equipment. TSB: Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery. The following guidelines should be performed to minimize vehicle component/part degradation due to extended vehicle storage conditions. Long-term storage can affect a vehicle?s systems and components. Any problems that are found should be corrected immediately.
• 10173740Mar 3, 2020Electrical system, Equipment. TSB: An initialization procedure is required to activate the Entune? 3.0 App Suite Connect for Audio, Audio Plus, and Premium Audio head units before they are used for the first time on new vehicles. The initialization procedure may also be performed under other circumstances, such as following a head unit replacement or after the customer?s personal settings are erased.
• 10172863Feb 25, 2020Equipment, Electrical system. TT: Some 2020 model year vehicles may display abnormal Safety Connect operation during PDS or after replacement due to DCM activation issues. If there are no DTCs present and after the initial SOS light flashing sequence after ignition on, neither the red nor green light stays on in the overhead console determine if the vehicle is in shipping mode. To determine if a vehicle is experiencing this condition, connect a…
• 10172862Feb 25, 2020Equipment. TT: Some new vehicles may experience the SOS/Telematics functions inoperative during Pre-Delivery Inspection or after replacement. The following procedure outlines the process to activate the DCM with the cellular network.
• 10172858Feb 21, 2020Equipment, Electrical system. TT: Some 2020 model year vehicles may display abnormal Safety Connect operation during PDS or after replacement due to DCM activation issues. If there are no DTCs present and after the initial SOS light flashing sequence after ignition on, neither the red nor green light stays on in the overhead console determine if the vehicle is in shipping mode. To determine if a vehicle is experiencing this condition, connect a…
• 10172854Feb 18, 2020Equipment. 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.
• 10172852Feb 18, 2020Equipment. Safety Recall and Service Campaign - Technician Certification Requirements
• 10172849Feb 14, 2020Electrical system, Body and structure. TSB: Pre-Delivery Service (PDS) is a critical step in satisfying our dealership's new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: - Careful inspection for paint chips/scratches and body dents/dings. - Proper operation of electrical accessories. - Interior cleanliness. - Proper function of mechanical systems. Customer retention and proper maintenance…
• 10172836Feb 7, 2020Equipment. An initialization procedure is required to activate the Entune? 3.0 App Suite Connect for Audio, Audio Plus, and Premium Audio head units before they are used for the first time on new vehicles. The initialization procedure may also be performed under other circumstances, such as following a head unit replacement or after the customer?s personal settings are erased.
• 10171410Jan 29, 2020Electrical system. TT: Some customers may experience the inability to activate Remote Connect or Remote Connect 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.
• 10171405Jan 27, 2020Equipment. TSB: Vehicles may display evidence of a fluid leak or fluid seep from powertrain components. This bulletin explains how to determine the differences between a fluid leak versus a fluid seep. Cases that are determined to be a ?leak? should be repaired accordingly and will be covered under warranty if applicable. Cases that are determined to be a ?seep? should be documented on the repair order and inspected at the…
• 10171404Jan 24, 2020Equipment. TSB: REVISION NOTICE January 24, 2020 Rev1: ? The entire bulletin has been updated. Any previous printed versions of this bulletin should be discarded. A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Because of these factors, battery inspection and maintenance are…
• 10171457Jan 23, 2020Equipment. TT: In certain cases of leaking air conditioning systems, the root cause of the leak is inadvertently overlooked, causing a repeat repair. To improve customer satisfaction and repair A/C system leaks in one dealer visit, Toyota has developed a set of guidelines for evaluating A/C system components.
• 10171453Jan 22, 2020Equipment. TSB: REVISION NOTICE January 22, 2020 Rev1: ? The Battery subsection has been updated. Any previous printed versions of this bulletin should be discarded. Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery. The following guidelines should be performed to minimize vehicle component/part degradation due to extended vehicle storage conditions. Long-term storage…
• 10171442Jan 13, 2020Brakes, Equipment. TSB: REVISION NOTICE January 13, 2020 Rev1: ? Applicability has been updated to exclude 2020 model year Tacoma vehicles. ? The Introduction, Software Update Information, and Software Update Procedure sections have been updated. Any previous printed versions of this bulletin should be discarded. Some 2020 model year vehicles equipped with Audio Plus (version 1021) or Premium Audio (version 1021) or earlier may…
• 10171701Jan 8, 2020Equipment. 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.
• 10171697Jan 7, 2020Equipment. TT: Some customers may experience the Remote Connect 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.
• 10171695Jan 7, 2020Equipment, Electrical system. TT: Some 2020 model year vehicles may display abnormal Safety Connect operation during PDS due to DCM activation issues. This condition is characterized by no DTCs present and after the initial SOS light flashing sequence after ignition on, neither the red nor green light stays on in the overhead console. To determine if a vehicle is experiencing this condition, connect a Techstream and navigate to: Telematics-Data…
• 10170184Dec 13, 2019Equipment. TSB: REVISION NOTICE December 13, 2019 Rev1: ? Applicability has been updated to include several 2020 model year Toyota vehicles. ? The Required Tools & Equipment section has been updated. Any previous printed versions of this bulletin should be discarded. Some 2018 ? 2020 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to…
• 10170731Dec 6, 2019Equipment, Electrical system. TT: Customers may complain of a whine noise upon starter engagement. ? The whine noise may be accentuated when holding the key to start the engine; Alternately, the noise may be diminished by using the crank hold function ?bumping? the key to start the engine. ? The whine noise is likely to be loudest at the first cold start, diminishing with subsequent starts.
• 10170728Dec 5, 2019Equipment, Electrical system. TT: Some 2020 model year vehicles may display abnormal Safety Connect operation during PDS due to DCM activation issues. This condition is characterized by no DTCs present and after the initial SOS light flashing sequence after ignition on, neither the red nor green light stays on in the overhead console. To determine if a vehicle is experiencing this condition, connect a Techstream and navigate to: Telematics-Data…
• 10169440Nov 20, 2019Equipment, Electrical system. TSB: Some 2020 model year vehicles equipped with Audio Plus (version 1021) or Premium Audio (version 1021) or earlier may exhibit one or more of the following conditions: ? Barge in function defaulted to ?OFF? ? Limited phone book grammar ? Difficult Hand Free operation ? Abnormal Electronic Owner?s Manual operation ? Music doesn?t automatically resume when using Android Auto ? Cover art isn?t displayed ?Vehicle…
• 10169334Nov 18, 2019Electrical system, Equipment. TT: Safety Connect is a vehicle option which requires a subscription fee for the system to be active after the initial trial period. Once the subscription has expired the DCM (Telematics Transceiver) will be in an inactive state. In some instances, a DCM may need to be replaced even though the customer is not using the service.
• 10169407Nov 5, 2019Body and structure. TSB: REVISION NOTICE November 05, 2019 Rev1: ? The Warranty Information section has been updated. Any previous printed versions of this bulletin should be discarded. Some 2007 ? 2020 model year Tundra vehicles may exhibit surface corrosion and/or perforation corrosion on the back of the cab near the lower corner(s) of the center stop lamp assembly. Follow the Repair Procedure in this bulletin to address this…
• 10167968Oct 28, 2019Body and structure. TBS: Some 2007 ? 2020 model year Tundra (Crew Max) vehicles may exhibit a rust or perforation condition on the vehicle?s body behind the back window moulding. Follow the Repair Procedure in this bulletin to address this condition.
• 10168537Oct 21, 2019Steering. 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…
• 10168522Oct 16, 2019Electrical system. TSB: Some 2020 model year Tundra vehicles equipped with Entune? 3.0 Audio Plus (version 1186) or earlier may exhibit one or more of the following conditions: ? WiFi intermittently inoperative ? DTC B15DB present ? Changing the Auto Relock Timer setting also changes the Remote 2-Press unlock setting A software update is now available to address these conditions. Follow the Software Update Procedure in this bulletin…
• 10168518Oct 7, 2019Body and structure. TSB: Some 2007 ? 2020 model year Tundra vehicles may exhibit surface corrosion and/or perforation corrosion on the back of the cab near the lower corner(s) of the center stop lamp assembly. Follow the Repair Procedure in this bulletin to address this condition
• 10166035Sep 24, 2019Equipment. TT: Some new vehicles may experience the SOS/Telematics functions inoperative during Pre-Delivery Inspection or after replacement. The following procedure outlines the process to activate the DCM with the cellular network. To begin the process below, move the vehicle to an area with cell reception.
• 10166023Sep 16, 2019Electrical system. TT: Some customers may experience a call failure when attempting to call a conference call number that has been saved in their phonebook (ex: ?8005550122,,,1.,2;;;2#?). This issue is caused by changes to the Bluetooth in the iOS 13 update and may be resolved in a future iOS update.
• 10165994Sep 5, 2019Electrical system. TT: Some 2020 model year Tundra and Sequoia vehicles may experience a B15DB or intermittent Wi-Fi inoperative (Wi-Fi icon greyed out). To simplify the diagnosis of the inoperative Wi-Fi, refer to the procedure below to prevent unnecessary parts replacement.
• 10165984Sep 3, 2019Equipment. TSB: Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: ? Careful inspection for paint chips/scratches and body dents/dings. ? Proper operation of electrical accessories. ? Interior cleanliness. ? Proper function of mechanical systems. Customer retention and proper maintenance of vehicles…
• 10164921Aug 28, 2019Body and structure. TT: Some 2014-2020 Tundra vehicles with a TRD skid plate may exhibit a ?creaking? or ?crackling? noise coming from the lower front end. The source of this noise has been pinpointed in several cases to the TRD skid plate contacting the frame crossmember.
• 10164870Aug 2, 2019Equipment. TSB: Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: * Careful inspection for paint chips/scratches and body dents/dings. * Proper operation of electrical accessories. * Interior cleanliness. * Proper function of mechanical systems. Customer retention and proper maintenance of vehicles…
• 10164352Jul 16, 2019Equipment, Electrical system. TT: The new DCA-8000 Diagnostic Charger may cause your facility?s Ground Fault Circuit Interrupter (GFCI) breaker to trip. A GFCI breaker can be tripped for various reasons, one of the reasons may be related to the DCA-8000. We are investigating this issue to determine the root cause. Other reasons the GFCI breaker may trip ? Circuit demand is too high for GFCI rating ? Worn out GFCI internal contacts ? Improper…

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