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Electrical systemPart report

2026 Kia K4 Electrical system Problems

Complaints
2about this part
Share
15%of 13 total for the year
Median mileage
25,352miles
Trend
Too newThis model year is less than 4 years old, so a trend is not meaningful yet.

NHTSA recorded 2 complaints about the electrical system of the 2026 Kia K4, 15% of the 13 complaints for this model year. Where a mileage was given, the median is 25,352 miles. 1 of these say a crash was involved, according to the filers.

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.

“The contact owns a 2026 Kia K4. While driving 37 MPH, the vehicle lost motive power. After restarting the vehicle, the failure persisted, and the message Press Engine Start/Stop was displayed with the key warning light illuminated. The following night, the contact started and then turned off the vehicle; however, the vehicle restarted independently without the Engine Start/Stop button being pressed. The vehicle was towed to the dealer but was not yet diagnosed. The manufacturer was notified by phone, and a case was filed. The failure mileage was 25,352.”

NHTSA complaint #11769857, filed 2026-10, 25,352 miles

“Driving home, the entire screen flickered, then went out, when it came back the drivers assist lane assist kicked in and the car steered itself into oncoming traffic, which forced an oncoming car in front had to lock its brakes to avoid a collision. Then after forcing the steering out of the incoming lane, the lane assist came back on causing collision with the curb in the opposite direction. After resetting the computer with a pin, and watching the screen flicker and blink, it came back on and now the car is parked at home. …”

NHTSA complaint #11767387, filed 2026-09

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2026215%
20251430%

Other parts of the 2026 Kia K4

Other or unknown
5 complaintsSteering
5 complaintsLane departure
4 complaintsForward collision avoidance
2 complaintsVehicle speed control
2 complaintsAir bags
1 complaintsEngine
1 complaintsBody and structure
1 complaintsTires
1 complaints

← All problems reported for the 2026 Kia K4

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