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Electrical systemPart report

2018 Hyundai Tucson Electrical system Problems

Complaints
29about this part
Share
7%of 399 total for the year
Median mileage
38,900miles
Trend
FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.

NHTSA recorded 29 complaints about the electrical system of the 2018 Hyundai Tucson, 7% of the 399 complaints for this model year. Where a mileage was given, the median is 38,900 miles. 3 of these say a crash was involved, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Warning light on dashboard board goes on and off constantly indicating rear brake light needs attention. When warning light is on, brake light does not work. When warning light turns off, brake light works. This happens when car is on and constantly at random times even when I'm stationary. Also, when I'm stopped, car tugs like it wants to accelerate.”

NHTSA complaint #11413638, filed 2021-04, 38,900 miles

“I was driving on a interstate got off on a exit and my car started doing a loud ticking noise and would not accelerate over 40 MPH. I drove the car to get the car tested to see the problem .the code read knock sensor.got the knock sensor replaced by a local mechanic and the car drove the say way before I took it to his shop.the car only has 67,00 miles”

NHTSA complaint #11395855, filed 2021-02, 67,000 miles

“A month ago my engine light stayed on and dealer said rodents had eaten electrical wires and insulation under the hood cost over $600. To fix. Today same thing and I opened the hood to find the entire engine area littered with chewed wires and insulation . The soy based wiring coating needs a safety recall,”

NHTSA complaint #11244698, filed 2019-08, 6,000 miles

“After acquiring a little over a month (1167 miles on it) this car failed while I was driving on a major highway and had to navigate over 4 lanes from just momentum - could not use my cellphone as it was trying to sync to the car which was now completely dead. Towed to purchasing dealer and was diagnosed as bad ground wire. I am terrified to drive this car again, my passenger and I could have been injured or worse.”

NHTSA complaint #11142184, filed 2018-10, 1,167 miles

“In May 2024 my Hyundai Tucson died in a middle of an intersection with no warning. Worse than that is Hyundai motor USA informed me that the car was on a recall list for an engine failure issue that was apart of class action suit . Ans further told me that that were obligated to have the highway transportation safety dept notified first consider cause of the issue. They told an inspector from your department was required to inspect vehicle before repairs could be started and or returned fo me. That has not happened and they are using your office as the reason for delay on my vehicle. …”

NHTSA complaint #11610579, filed 2024-08, 109,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2026813%
20256823%
20242020%
20232720%
20225414%
20211215%
20201911%
20194712%
2018297%
2017858%
201621713%
2015209%
2014157%
2013228%
2012177%
20111210%
2010610%
2009211%
2008512%
200746%
20061612%
20053016%

Other parts of the 2018 Hyundai Tucson

Engine
244 complaintsTransmission and drivetrain
101 complaintsOther or unknown
44 complaintsBrakes
42 complaintsFuel system
22 complaintsVehicle speed control
16 complaintsExterior lighting
13 complaintsEngine cooling
8 complaintsBody and structure
8 complaintsAir bags
5 complaintsSteering
4 complaintsElectronic stability control
2 complaints

← All problems reported for the 2018 Hyundai Tucson

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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