2018 Toyota Tundra electrical system problems
26 owner complaints filed with NHTSA name the electrical system on the 2018 Toyota Tundra — 26% of all complaints for this model year.
What owners report
“When starting up my truck in the morning there is rough idle that cause truck to sputter and sound horrible. It eventually smooths out but I believe the computer needs flashing. When I look online some have a recall for the engine 3UR-FBE / 2018 Toyota tundra, but when I put in my vin # it shows no…”
filed Jan 27, 2026
“This case results from the malfunctioning trailer brake ECU on 2018-2019 Tundras. There is a Toyota service bulletin T-SB-0036-19, which specifies an updated controller to replace the defective model. Part # : Original 89547-0C020 Update/replacement 89547-0C060 Toyota will not replace this…”
filed Oct 10, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Air bag electronic control unit (ECU) may erroneously detect a fault during the vehicle…Campaign 18V685000 · Oct 4, 2018
Related service bulletins
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.
T-TT-0790-25 · Service Bulletin/Repair Instructions · issued Aug 20, 2025The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and…
T-SB-0058-23 Rev1 · Service Campaign · issued Jun 13, 2025
Electrical System problems in other Tundra years
| Year | Reports | Share |
|---|---|---|
| 2026 Tundra | 1 | 5% |
| 2025 Tundra | 10 | 8% |
| 2024 Tundra | 33 | 11% |
| 2023 Tundra | 39 | 10% |
| 2022 Tundra | 27 | 6% |
| 2021 Tundra | 4 | 17% |
| 2020 Tundra | 3 | 7% |
| 2019 Tundra | 13 | 18% |
| 2017 Tundra | 27 | 35% |
| 2016 Tundra | 26 | 22% |
| 2015 Tundra | 7 | 15% |
| 2014 Tundra | 18 | 20% |
Other reported problem areas on the 2018 Toyota Tundra
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.