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Service bulletins for the 2018 Toyota Tundra

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

227 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
K0B-Sensor MAC-02019-06-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Parts Hotwire: Certain millimeter wave radar sensor part numbers have been placed on MAC.These parts have been placed on MAC to help ensure that the sensor has the correct software version and that sealer has been applied prior to installation on a vehicle. The following part numbers have been placed on MAC.
K0B-CPOR-0328192019-06-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Dealer Letter: **Part deployment details** In an effort to assist dealers in performing campaign K0B on a customer?s first visit, Toyota is deploying stock of EPT Sealers, part numbers 88278-0C010 and 88278-0C020 to all dealers. Dealers will receive enough parts to repair 2 days-worth of their peak demand based on the quantity of vehicles registered in their area. Peak demand has been estimated based on historical campaign demand. Dealers should continue to place orders following the CPOR process for this campaign to replenish their stock. For additional details on the CPOR process, refer to the MAC report. Parts are stocked at the Parts Distribution Centers and are available in one day from order placement.
K0B-MWRS-TI-03282019-06-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Technical Instructions: TECHNICAL INSTRUCTIONS FOR SPECIAL SERVICE CAMPAIGN K0B MILLIMETER WAVE RADAR SENSOR CERTAIN: 2018 ? 2019 TACOMA 2018 ? 2019 TUNDRA
K0B_Dealer Packa2019-05-13. Service bulletin. FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC; EQUIPMENT. Dealer Package: The involved vehicles are equipped with a Pre-Collision System (PCS) that may automatically apply the brakes if the system detects a potential collision. Due to the mounting of one of the system?s sensors, it is possible for water to enter the sensor. This can lead to PCS deactivation or inadvertent brake activation resulting in limited deceleration for a short duration of time. Please refer to the Owner?s Manual for additional information regarding the PCS system operation.
K0A_Tundra Sequo2019-05-13. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:SOFTWARE. Technical Instructions: Update 4/5/2019: Note added on p. 5. TECHNICAL INSTRUCTIONS FOR SPECIAL SERVICE CAMPAIGN K0A ENGINE ECU SOFTWARE UPDATE CERTAIN: 2018 TUNDRA 2018 SEQUOIA (Reference the separate Technical Instructions for 2018 Camry and Sienna)
T-SB-0036-192019-05-13. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. TSB: Some 2018 ? 2019 model year Tundra vehicles equipped with integrated trailer brake controllers may exhibit an intermittent ?Trailer Disconnected? message in the combination meter while towing a trailer. Follow the Repair Procedure in this bulletin to address this condition.
K0A_Dealer Lette2019-04-15. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Dealer Letter: The engine ECUs in the subject vehicles are equipped with software to monitor the rear oxygen sensors. Under a specific condition, this software may not detect a malfunctioning sensor due to an error in the software. As a result, affected vehicles do not meet certain onboard diagnostic (OBD) regulations.
T-TT-0484-18-Rev2019-03-25. Service bulletin. ELECTRICAL SYSTEM. TT: Some customers may experience echoing on the line calling the vehicle when using Bluetooth Hands Free. This is caused by the phone Hands Free volume being too low. These settings may need to be reapplied any time the phone is paired to a new head unit, a phone update is applied, or the phone is un-paired and re-paired.
T-TT-0414-16-Rev2019-03-25. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT; ELECTRICAL SYSTEM. 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 phone. Make sure to inquire with the customer if the connectivity concerns occurred after receiving an operating system update on their phone, or if they have restored their phone data/settings recently.
T-SB-0279-17_Rev2018-12-17. Service bulletin. ELECTRICAL SYSTEM. TSB: REVISION NOTICE November 13, 2018 Rev2: ? The entire bulletin has been updated. March 16, 2018 Rev1: ? Applicability has been updated to include 2018 model year vehicles. ? The entire bulletin has been updated. Any previous printed versions of this bulletin should be discarded. SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin Nos. T-SB-0103-16 and T-SB-0337-17. ? The entire bulletin has been updated. Service Bulletin No. T-SB-0103-16 and T-SB-0337-17 are obsolete and any printed versions should be discarded. Be sure to review the entire content of this bulletin before proceeding. Some 2016 ? 2018 model year vehicles equipped with Entune? Audio (version 01013E), Entune? Audio Plus (version 010156 or 01015C), or Entune? Premium Audio (version 010171, 010170, or 01017D) may exhibit one or more of the following conditions: ? Head unit reboots at a specific location ? Abnormal Destination Search app operation ? Rebooting caused by no songs on the USB-connected iPhone ? A one-time reboot after ignition is cycled to ACC-ON ? Audio stays muted after the key is cycled
T-SB-0279-17-Rev2018-12-17. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT:ELECTRICAL. TSB: REVISION NOTICE March 16, 2018 Rev1: ? Applicability has been updated to include 2018 model year vehicles. ? The entire bulletin has been updated. Any previous printed versions of this bulletin should be discarded. SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0103-16 and T-SB-0337-17. ? The entire bulletin has been updated. Service Bulletin No. T-SB-0103-16 and T-SB-0337-17 are obsolete and any printed versions should be discarded. Be sure to review the entire content of this bulletin before proceeding. Some 2016 ? 2018 model year vehicles equipped with Entune? Audio (version 01013E), Entune? Audio Plus (version 010156 or 01015C), or Entune? Premium Audio (version 010171, 010170, or 01017D) may exhibit one or more of the following conditions: ? Head unit reboots at a specific location ? Abnormal Destination Search app operation ? Rebooting caused by no songs on the USB-connected iPhone ? A one-time reboot after ignition is cycled to ACC-ON ? Audio stays muted after the key is cycled
HOY Region Email2018-11-05. Service bulletin. ELECTRICAL SYSTEM. Region Email: The subject vehicles are voluntarily equipped with an event data recorder (EDR). The EDR only collects, stores, and allows retrieval of vehicle event data, including crash events. It does not control the operation of the vehicle or crash safety systems. Due to a software error in the air bag ECU where EDR data is stored, the EDR data for ?Frontal Airbag Deployment, Time to 1st Stage Deployment,? and ?Frontal Airbag Deployment Time to 2nd Stage Deployment,? will show the same value at the time an event is recorded. This software error has no effect on the actual air bag?s deployment times for both stages. Both air bags operate as designed.
GST-TSB-18-0012018-08-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. This Technical Service Bulletin provides procedures to inspect and repair certain model year 2018 Toyota Tundra vehicles equipped with a Cargo Bed Light accessory which exhibits intermittent or no function of the lights. The non-Toyota Cargo Bed Light accessory was installed as a Gulf States Toyota installed option.
H0Y Region Email2018-06-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; AIR BAGS; EQUIPMENT:ELECTRICAL. Region Email: The subject vehicles are voluntarily equipped with an event data recorder (EDR). The EDR only collects, stores, and allows retrieval of vehicle event data, including crash events. It does not control the operation of the vehicle or crash safety systems. Due to a software error in the air bag ECU where EDR data is stored, the EDR data for ?Frontal Airbag Deployment, Time to 1st Stage Deployment,? and ?Frontal Airbag Deployment Time to 2nd Stage Deployment,? will show the same value at the time an event is recorded. This software error has no effect on the actual air bag?s deployment times for both stages. Both air bags operate as designed.
T-SB-0229-12_Rev2018-04-23. Service bulletin. ELECTRICAL SYSTEM. TSB: REVISION NOTICE November 22, 2017 Rev1: ? Applicability has been updated to include 2014 ? 2018 model year vehicles. Any previous printed versions of this bulletin should be discarded. In the event that a Toyota vehicle becomes submerged in water, many components may be physically damaged. Electrical and electronic components, including wiring harnesses, are particularly susceptible to corrosion and subsequent malfunction. Although any flooding can be damaging, salt water flooding elevates the potential for abnormal conditions and may increase risks due to its highly corrosive and conductive nature. Salt residue also continues to corrode and remain conductive even after a vehicle dries. This bulletin is intended to assist with safe handling and inspection of flood damaged vehicles and to provide basic guidance on likely needed repairs.
T-SB-0195-172018-04-02. Service bulletin. ELECTRICAL SYSTEM. TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and life. These conditions include storage period, temperature, parasitic drain, and battery load. Because of these factors, battery inspection and maintenance are required in order to ensure proper operation and optimal battery life. As a matter of policy, Toyota does not provide battery warranty coverage for discharges and/or failed batteries due to lack of maintenance. It is the dealer's responsibility to maintain the specific State-Of-Charge (SOC) of the vehicle's battery while in stock and assure proper SOC at delivery.
T-SB-0337-172018-01-16. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TSB: Some customers may complain of the inability to use certain functions of the navigation/infotainment system while the vehicle is in motion. The following software update modifies the system functionality while the vehicle is in motion, improving customer experience. New software is available to address the following: ? Phone keypad unlocked while vehicle is in motion ? Contact list unlocked while vehicle is in motion ? Bluetooth connected phone switching while vehicle is in motion ? Navigation transition improvements (if equipped) ? Revised BT-Audio help pop-up ? Call history list call function improvements ? Reboot after coming out of Reverse ? Errors during phonebook transfer ? Sound settings reset after ignition key cycle ? Surround turns back on after key cycle ?Abnormal operation when listening to FM HD Radio

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.