2021 Hyundai Tucson Electrical system Problems
- Complaints
- 12about this part
- Share
- 15%of 80 total for the year
- Median mileage
- 8,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 12 complaints about the electrical system of the 2021 Hyundai Tucson, 15% of the 80 complaints for this model year. Where a mileage was given, the median is 8,500 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“We got the recall notice on blue link called fletcher where we bought it and was told they would get to us sometime that the part was backordered haven't heard from them since when I called got the same speech ask about fires and they said there's nothing to worry about we still drive it because it's all we have been parking in the garage because no worries according to fletcher and honestly it's been below freezing”
NHTSA complaint #11402935, filed 2021-03, 8,500 miles“loss of info system loss of all dash lights when I turn the engine off most of the time I loose all electrical systems (will not start for at least 15 minutes) if doors lock I can only unlock the drivers door with the auxiliary key. Has tried to shift in to park while driving (one time) Lost all power (engine and steering while crossing a highway (once only)”
NHTSA complaint #11770328, filed 2026-10“I've had numerous issues with my vehicle, including power steering, brakes, loss of power, and more. On a few occasions, I started my vehicle and put it into drive, only to find that the power steering hadn't disengaged. This led to near collisions, such as almost hitting another vehicle while backing out of a parking spot and nearly running into a wall. I've reported these issues to Hyundai multiple times, but the dealership can't reproduce the problem, despite having recordings of the incidents. …”
NHTSA complaint #11527673, filed 2023-06“The AC system on my vehicle stopped working with less than 55,000 miles on it. When replacing the compressor, condenser, all AC switches, and lines (the entire AC system besides the ECM), the AC is still not working. The compressor is not kicking on. I have an ECM on order, but myself, and all mechanics (including Hyundai certified mechanics) are all unsure why this would have happened on such a low mileage vehicle. I am EXTREMELY disappointed and frustrated with the experience and not having AC after spending thousands of dollars and time getting it fixed. Please advise ASAP. …”
NHTSA complaint #11656391, filed 2025-04“Check engine light comes on flashing for a knock sensor. This has happened four times. Since it is flashing, car goes into limp mode and won’t go over 2000 rpm, low speeds and slow/no acceleration. It is dangerous due to happening on highways and going from cruising speeds to a crawl, with minimal ability to accelerate, very quickly. Sensor has been updated once and sensor has been replaced twice. Currently dealing with corporate after the fourth time of this issue happening. I am still fighting this issue and it’s looking like I will need an attorney.”
NHTSA complaint #11505932, filed 2023-02Related service bulletins
- 11037434Sep 16, 2026Some Tucson (TL) vehicles equipped with a 2.0L engine may exhibit a continued DTC P132600 after an ECM logic update has been performed per TSB 24-01-068H, Engine Monitoring Logic…
- 11033700May 21, 2026Certain Santa Fe (TMA), Santa Fe Sport (AN), Sonata (LFA), and Tucson (TL) vehicles equipped with Theta II engines may exhibit elevated engine-out emissions. The California Air…
- 11033699May 21, 2026Certain Santa Fe (TMA), Santa Fe Sport (AN), Sonata (LFA), and Tucson (TL) vehicles equipped with Theta II engines may exhibit elevated engine-out emissions. This bulletin…
- 11033705May 19, 2026Following completion of Service Campaign 9C2 (Theta II Emissions Improvement), certain vehicles may exhibit a brief hesitation or rough shifting condition during cold start…
- 11033701May 19, 2026Following completion of Service Campaign 9C2 (Theta II Emissions Improvement), certain vehicles may exhibit a brief hesitation or rough shifting condition during cold start…
- 11026704Dec 19, 2025In response to this trend, we engineered a software upgrade that addresses the social media theft method and made it available to owners of eligible models free of charge at…
- 11027035Dec 15, 2025Upon customer's request ONLY, the Technical Service Bulletin (TSB) 25-01-089H provides the service procedure for installation of a key cylinder reinforcement protector assembly…
- 11027034Dec 15, 2025In addition to the Anti-Theft software provided under Service Campaign 993 (TSB 24-01-009H-1), a zinc reinforced ignition cylinder protector hardware upgrade is being made…
- 11027033Dec 15, 2025This bulletin provides the service procedure for installation of a key cylinder reinforcement protector assembly and two anti-theft decals on the front windows.
- 11018575May 8, 2025Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 8 | 13% |
| 2025 | 68 | 23% |
| 2024 | 20 | 20% |
| 2023 | 27 | 20% |
| 2022 | 54 | 14% |
| 2021 | 12 | 15% |
| 2020 | 19 | 11% |
| 2019 | 47 | 12% |
| 2018 | 29 | 7% |
| 2017 | 85 | 8% |
| 2016 | 217 | 13% |
| 2015 | 20 | 9% |
| 2014 | 15 | 7% |
| 2013 | 22 | 8% |
| 2012 | 17 | 7% |
| 2011 | 12 | 10% |
| 2010 | 6 | 10% |
| 2009 | 2 | 11% |
| 2008 | 5 | 12% |
| 2007 | 4 | 6% |
| 2006 | 16 | 12% |
| 2005 | 30 | 16% |
Other parts of the 2021 Hyundai Tucson
39 complaintsBrakes
12 complaintsOther or unknown
10 complaintsFuel system
8 complaintsTransmission and drivetrain
8 complaintsForward collision avoidance
6 complaintsEngine cooling
3 complaintsVehicle speed control
3 complaintsAir bags
2 complaintsLane departure
2 complaintsSeat belts
2 complaintsSteering
2 complaints
← All problems reported for the 2021 Hyundai Tucson
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology