Service Bulletins
Manufacturer Technical Service Bulletins (TSBs) issued to authorized dealers — software updates, repair procedures, fault-code fixes, and warranty coverage details for current and recent model years.
2021-2022 Hyundai Elantra ICU Software Update for Warning Lights
Hyundai has released Technical Service Bulletin 22-01-076H for 2021-2022 Elantra vehicles to resolve issues like multiple warning lights, reduced power steering, and difficulty shifting from Park, all stemming from the Integrated Central Control Unit (ICU).
2021-2023 Hyundai DCT Electric Oil Pump DTCs
Hyundai has released Technical Service Bulletin 22-AT-009H to address 'Check Engine' light illumination due to Electric Oil Pump (EOP) Diagnostic Trouble Codes (DTCs) in certain 2021-2023 models. This TSB outlines diagnosis and repair procedures for both High Flow EOP and High Pressure EOP issues.
2021-2022 Hyundai Elantra Steering Bearing Noise TSB
Hyundai Technical Service Bulletin 22-ST-005H-1 describes a potential bearing noise in the Motor Driven Power Steering (MDPS) column worm shaft assembly for various 2021-2022 Hyundai models, including the Elantra. This TSB outlines the diagnostic procedure and the necessary steps to replace the…
2022-2023 Hyundai Elantra One Smart Key FOB Issue
Hyundai has issued Service Campaign 988 (TSB 22-01-054H) for certain 2022-2023 Elantra, Elantra N, and Elantra Hybrid vehicles that were delivered with only one smart key FOB instead of the usual two. A second key will be provided at a later date.
2021-2023 Hyundai N Models Low Speed Shudder TSB
Hyundai has issued Technical Service Bulletin 22-ST-007H to address customer concerns about a low speed shudder or vibration in N vehicles. This TSB clarifies that the 'Hyundai N low speed shudder' is a normal characteristic due to the performance-optimized steering geometry and requires no repair.
2022 Hyundai Elantra Blind Spot Warning Software Update
A software update is available for certain 2022 Hyundai Elantra (CN7) vehicles to resolve issues with the Blind-Spot Collision-Avoidance Assist (BCA) system. Owners may experience blind spot or rear cross-traffic warning sounds that do not turn off, even after conditions for the warning have passed.
2021-2022 Hyundai Elantra/Kona WTS Coolant Leak Repair
Hyundai has issued Service Campaign 22-01-032H for certain 2021 Elantra and 2022 Kona vehicles equipped with 2.0L engines. This campaign addresses coolant leaks at the Water Temperature Sensor (WTS) caused by machining burrs, which can lead to improper coolant sealing.
2022 Hyundai Elantra N Clutch Disc Inspection and Repair
Hyundai's Service Campaign 22-01-027H addresses a potential issue in 2022 Elantra N manual transmission vehicles where the clutch disc might be installed in reverse, leading to premature wear. This bulletin details the inspection and repair process to correct the condition and ensure proper clutch…
2021-2022 Hyundai Elantra Kona DCT Shift Shock TSB
Hyundai Technical Service Bulletin 22-01-007H addresses abnormal shifting or 'shift shock' in certain 2021-2022 Hyundai Elantra and Kona vehicles equipped with a 7-speed Dual Clutch Transmission (DCT). The issue is caused by an out-of-specification input shaft snap ring, requiring inspection and…
2021 Hyundai Elantra Front Bumper Molding Paint Delamination TSB
Certain 2021 Hyundai Elantra and Elantra Hybrid vehicles may experience paint delamination on their dark chrome front bumper moldings. Hyundai Technical Service Bulletin 22-BD-001H outlines the procedure to replace these moldings to resolve the issue.
2021 Hyundai Elantra ECM Update for Stalling and Blower Faults
Hyundai has released Service Campaign 21-01-043H to update the Engine Control Module (ECM) software in certain 2021 Hyundai Elantra vehicles. This update resolves potential engine stalling issues in cold temperatures, indicated by DTC P016C, and addresses blower motor control logic related to DTC…
2021 Hyundai Elantra ICU Software Update for Warning Lights
A software update for the Integrated Central Control Unit (ICU) is available for certain 2021 Hyundai Elantra (CN7) vehicles. This update, detailed in Service Campaign 21-01-056H, resolves issues such as multiple warning lights, reduced power steering assist, and difficulty shifting out of Park.
2021-2022 Hyundai Elantra Coolant Leak TSB 21-01-048H
Hyundai TSB 21-01-048H addresses coolant leaks from the Water Temperature Sensor (WTS) in 2021-2022 Elantra vehicles. This is caused by machining burrs on the cylinder head mounting port. The repair involves inspecting for leaks, repairing the burr, and replacing the WTS.
2021 Hyundai Elantra Window Lockbox Battery Drain TSB
Hyundai TSB 21-GI-005H addresses battery drain and potential window seal damage in 2021 Hyundai Elantra models caused by window-mounted lockboxes without RFID shielding. This can lead to continuous key fob transmission and voided warranty.
2021 Hyundai Elantra Turn Signal Bulb Replacement TSB 21-BE-007H
Some 2021 Hyundai Elantra (CN7a) vehicles may experience prematurely inoperative rear turn signal bulbs. Technical Service Bulletin 21-BE-007H outlines the procedure for replacing both left and right rear combination lamp turn signal light bulbs to restore proper function.
2021 Hyundai Wireless CarPlay Disconnection TSB
Hyundai has released Technical Service Bulletin 21-BE-002H to address intermittent Wireless CarPlay disconnections in certain 2021 Elantra, Sonata, Palisade, and Venue models. This update helps reduce instances of the "Phone Not Responding" message.
2021 Hyundai Elantra Engine Stall Service Campaign
Hyundai's Service Campaign 21-01-017H addresses a potential engine stall in 2021 Elantra (CN7/CN7a) vehicles equipped with the 2.0L MPI IVT. The issue occurs after Forward Collision Avoidance (FCA) activation at low speeds and RPM. A Transmission Control Unit (TCU) software update is required to…
2021-2024 Toyota Navigation Map Update TSB Superseded
Toyota Technical Service Bulletin T-SB-0106-22, which outlined the Premium Audio Navigation Map Update Process for various 2021-2024 Toyota models, has been declared obsolete as of January 30, 2026. Owners and technicians should now refer to T-SB-0001-26 for current information.
2021 Hyundai Wireless CarPlay Disconnection Software Update
Hyundai has released Service Campaign T5T (TSB 21-01-007H) for 2021 Elantra, Sonata, Palisade, and Venue vehicles to resolve intermittent Wireless CarPlay disconnections. A software update for the radio system is available.
2021 Hyundai Elantra Launch Quality Monitoring Process
Hyundai implemented a Launch Quality Monitoring Process (LQMP) for the 2021 Elantra to track customer and dealer feedback for over 100 days. This initiative aims to improve vehicle quality and proactively respond to the 'Voice of the Customer' (VOC), covering electrical systems, equipment, and…
2021-2024 Toyota Low Oil Pressure DTCs P05202A P052477
An obsolete Lexus Technical Service Bulletin (L-SB-0021-25) addressed issues in certain 2021-2024 Toyota models, including the Toyota Camry, related to low oil pressure DTCs P05202A and P052477, a MIL ON, and milky/discolored engine oil in freezing temperatures. This bulletin was declared obsolete…
2021-2026 Toyota Vehicles Musty Odor Remediation TSB
This Toyota Technical Service Bulletin (T-SB-0055-24 Rev2) addresses musty odors in 2021-2026 Toyota vehicles resulting from water intrusion. It outlines a dealer-performed remediation process, including inspection, cleaning, and ozone treatment.
2018-2024 Toyota Navigation Map Update Process TSB
Toyota has released Technical Service Bulletin T-SB-0001-26 detailing the Premium Audio Navigation Map Update Process for 2018-2024 vehicles. This bulletin outlines how to update navigation maps, points of interest, and system software using a Special Service Tool (SST) USB flash drive.