This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer to the 2026 1st Navigation Map and Software Update Key Improvements and Additional Improvements tables in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater (NAU) and updated by USB.
full bulletin at NHTSA ↗2023 Hyundai Santa Fe electrical problems
moderate Owners of the 2023 Hyundai Santa Fe have filed 28 NHTSA complaints about the electrical at roughly $850 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →
Complaints
28
Recalls
0
Avg fix
$850
| Model year | electrical complaints |
|---|---|
| 2019 Santa Fe | 18 |
| 2020 Santa Fe | 21 |
| 2021 Santa Fe | 23 |
| 2022 Santa Fe | 23 |
| 2023 Santa Fe (this page) | 28 |
| 2024 Santa Fe | 19 |
| 2025 Santa Fe | 20 |
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What stands out
Owners have filed 28 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Some vehicles may exhibit difficulty starting in cold weather. This bulletin provides the procedure to perform an inspection on the starter magnetic switch for potential freezing and, if necessary, replace the starter magnetic switch (solenoid) assembly.
full bulletin at NHTSA ↗This bulletin provides information related to the changes introduced in the 2025 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system as described in this TSB.
full bulletin at NHTSA ↗A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
full bulletin at NHTSA ↗This bulletin provides information related to the changes introduced in the 2024 2nd Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer to the 2024 2nd Navigation Map and Software Update Improvements section in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater (NAU) and updated by USB. The NAU website is https://update.hyundai.com/US/EN/navigationUpdate. For certain models equipped with a relevant Bluelink package, the software may be downloaded and applied via OTA update.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2023 Santa Fe's electrical system generates consistent complaints across multiple failure points. Horn system failure is the most frequent issue—at least nine separate reports describe inoperative horns starting as early as 7,600 miles, with several owners experiencing repeated failures even after dealer replacement under warranty. One owner reports the horn fails specifically after rain. Multiple owners state the dealership acknowledges horn failure is common in this model but remains under the limited 5-year/60,000-mile warranty.
Emergency braking activation without cause is a serious recurring problem. Multiple owners report the AEB/FCA system engaging suddenly at highway speed with no vehicles or obstacles present, creating rear-end collision risk. One incident caused a deceleration from 75 to 35 mph in 10 seconds.
Power delivery issues span several areas: one owner experienced complete electrical shutdown (engine, lights, brake) while reversing; another reported persistent "auto engine off" messages and power loss that continued after alternator and battery replacement. Multiple complaints describe engine stalling, hard starting, and hesitation during acceleration—some owners found online suggestions of loose grounds. Vehicle backup lockups and steering wheel hand-detection false warnings are also documented.
One vehicle spontaneously caught fire eight hours after parking, destroying the engine compartment and five adjacent vehicles. A separate complaint shows 518 diagnostic codes accumulating, including persistent LKAS/SCC sensor codes that return even after dealer repairs. Door locks that unlock themselves and door lock malfunction during parking are also reported.
Same Hyundai Santa Fe electrical reports on nearby years: 2020 · 2021 · 2022 · 2024 · 2025
Failure modes owners describe
Horn system failure
Horn becomes inoperative or loses one or both tones (high and low). Multiple complaints report repeated failures even after dealer replacement. One owner reports the horn fails specifically when it rains. Dealership has confirmed the issue is recurring and widespread in the model.
When: 7,600 miles to 72,000 miles; failures occur multiple times for some owners within months or weeks of replacement
Symptoms owners cite: No sound when horn pad depressed; One or both horn tones become inaudible; Complete horn system failure; Horn fails repeatedly after warranty repair
Repairs/costs cited: Dealership replacement covered under 5-year/60,000-mile warranty initially; subsequent failures cost owners $499.64 out of pocket. Dealership has stated horn failure is common in 2023 Santa Fe but only covered under 5-year/60,000-mile warranty despite being a known defective part.
Recalls/TSBs owners mention: No recall issued. Warranty coverage limited to 5 years/60,000 miles. Hyundai corporate contacted but no extended assistance offered for repeat failures.
Automatic Emergency Braking (AEB) / Forward Collision-Avoidance (FCA) system unwanted activation
Vehicle applies emergency braking suddenly and forcefully at highway speeds with no vehicles, obstacles, or hazards present. Red emergency braking warning lights and audible warning activate during events. At least two separate incidents reported on the same day, and another report of collision detection alert triggering emergency braking on interstate at 75 mph.
When: Highway driving, normal conditions; two incidents within 45–60 minutes; another incident at 75 mph on interstate
Symptoms owners cite: Sudden aggressive braking at highway speed with no warning; Red emergency braking warning light and audible warning activate; Rapid deceleration (75 to 35 mph in 10 seconds reported); No vehicles or obstacles in path; Collision detection sensor activates without cause
Repairs/costs cited: No repair performed; dealer unable to reproduce issue and no diagnostic trouble codes found.
Recalls/TSBs owners mention: No recall. Dealership inspection at facility but cause not identified.
Complete electrical power loss
All electrical systems shut down simultaneously while reversing, including propulsion, dashboard lights, and electronic parking brake. Vehicle rolled backward into traffic. Power returned on its own after approximately one hour.
When: While reversing out of parking spot; approximately 40,000 miles on vehicle
Symptoms owners cite: All electrical systems fail simultaneously; Propulsion loss during basic maneuver; Dashboard lights go out; Electronic parking brake disables; No warning lights beforehand; Power self-restores after ~1 hour
Repairs/costs cited: No repair performed. Dealership diagnostic scan found no fault codes. Vehicle passed road test after power restored.
Recalls/TSBs owners mention: No recall. Dealership documented incident but returned vehicle without repair. Advised owner to tow if issue recurs and use wheel chock for safety.
LKAS/SCC sensor and diagnostic code storage issues
Vehicle accumulates 518 diagnostic history codes with 3 active DTCs (C160C87 for LKAS and SCC, C163881 for SCC). Codes originate from assembly and persist despite multiple dealer visits and front camera replacement. Codes return repeatedly even after Hyundai engineering reportedly corrected the issue.
When: Issues first occur during actual assembly in Montgomery, AL plant; persist through vehicle ownership
Symptoms owners cite: Recurrent active diagnostic trouble codes; LKAS/SCC system malfunction codes; Codes clear but return immediately; Multiple dealer attempts unable to resolve
Codes mentioned: C160C87 (CHASSIS LKAS), C160C87 (CHASSIS SCC), C163881 (CHASSIS SCC)
Repairs/costs cited: Front camera replaced initially due to suspected heating issue; did not resolve codes. Three different Hyundai Service dealers unable to find contributing factors.
Recalls/TSBs owners mention: Hyundai BLUELINK service filed two information reports. First feedback stated engineers corrected issue; codes returned the next day. Second report filed under Hyundai Motor America Case# but no resolution provided.
Door lock system malfunction
Vehicle unlocks itself spontaneously. Owner must constantly verify doors are locked. Doors unlock audibly as owner walks away from vehicle.
When: Intermittent, occurs most often at inconvenient times
Symptoms owners cite: Doors unlock themselves spontaneously; Audible unlocking noise while owner away from vehicle; Frequent need to manually verify lock status
Repairs/costs cited: Taken to dealership for repair; no repair cost or outcome specified.
Recalls/TSBs owners mention: Dealership states this vehicle is the only one experiencing the issue, but owner reports finding similar complaints on Reddit and other platforms.
Steering wheel hand-detection system malfunction
Vehicle displays warning to place hands on steering wheel even when hands are already on wheel. False warning activates repeatedly.
When: Intermittent; occurs during normal operation
Symptoms owners cite: False hand-detection warning despite hands being on wheel
Repairs/costs cited: Owner has video of malfunction but no repair specified.
Engine stalling and restart failure
Engine stops during driving multiple times (3–4 instances reported). In at least one case, engine would not restart when auto start-stop was engaged at stop sign; required shifting to park to restart. Hard starting even on relatively new vehicle with difficulty turning over.
When: Multiple instances since January 2025 through March 2026; also reported at 5,000 miles on another vehicle
Symptoms owners cite: Engine stalls while driving; Hard starting with difficulty turning over; Engine fails to restart when releasing brake at stop sign with auto start-stop engaged; Requires manual shift to park to restart engine
Repairs/costs cited: One owner reports online forum suggestion of loose ground causing acceleration issues. Another owner had alternator and battery replaced after 'auto engine off' message and loss of power.
Transmission/drivetrain hesitation and poor acceleration
Vehicle struggles to accelerate and jerks or shimmers during acceleration. Feels like car is in neutral while attempting to drive. Occurs on busy roads, creating safety hazard when merging. One incident involves vehicle barely moving despite high RPMs.
When: During driving, particularly on busy roads requiring acceleration for merging
Symptoms owners cite: Hard time accelerating; Jerking and shimmering during acceleration; Feels like transmission in neutral; High RPMs with minimal vehicle movement; Unsafe merging conditions
Repairs/costs cited: Online forum suggests loose ground as potential cause. No dealer diagnosis or repair documented.
Battery and alternator power supply issues
Vehicle loses power intermittently. Battery and ignition warning lights activate repeatedly. 'Auto engine off' message displays instructing driver to shift to N or P and restart engine manually.
When: Started around 5,000 miles; infotainment and vehicle lags intermittently
Symptoms owners cite: Power loss while driving; Battery warning light activation; Key ignition light activation; 'Auto engine off' message appears; Vehicle sometimes will not start or shut off; Infotainment system lags; Overall vehicle lag
Repairs/costs cited: Dealership replaced alternator and battery. Owner continues to experience power issues despite replacement.
USB phone charger malfunction
Onboard USB phone charger does not work. Issue present from beginning of ownership.
When: From new vehicle purchase
Symptoms owners cite: Phone charger non-functional
Spontaneous engine fire
Vehicle spontaneously caught fire approximately 8 hours after parking, destroying engine compartment and totaling 5 additional vehicles. Vehicle contained Mando ABS module, Mando EPS module (similar to known defective parts), and Hyundai Mobis tow hitch harness, all with known defect/recall history in similar vehicles. Walla Walla Fire Department filed report.
When: 8 hours after parking; vehicle had no active recall despite containing potentially defective components
Symptoms owners cite: Vehicle catches fire while parked; Complete engine compartment destruction; Rapid fire spread to adjacent vehicles
Repairs/costs cited: Vehicle totaled. Related property damage exceeded $400,000.
Recalls/TSBs owners mention: No active recall on this VIN despite containing components with known defect/recall history.
Tire pressure monitoring sensor malfunction
Check Tire Pressure System light illuminates despite proper tire maintenance.
When: At 45,650 miles
Symptoms owners cite: Check Tire Pressure System warning light activated
Repairs/costs cited: Sensor noted as poor; no repair outcome specified.
Vehicle backup hesitation and lock-up
Vehicle locks up or hesitates when backing up. Difficult to accelerate when driving uphill; vehicle hesitates significantly requiring restart to resolve.
When: Intermittent during reversing and uphill driving
Symptoms owners cite: Vehicle locks up when backing up; Hesitation during uphill acceleration; Vehicle will not accelerate uphill; Requires restart to regain function
Synthesized from 28 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
Both horns on my 2023 Hyundai Santa FE have failed 3 times. The first set was covered under warranty (3/24), the second set cost $499.64 (3/25). Now both horns are nonfunctional after just being replaced this Spring. After reviewing many complaints on the Hyundai community form, it is very obvious there is a major issue with their horns ( and not just the Santa Fe model). Twice this week I was…
On a clear road a sencor comes on detect comes on says detection collision. The breaks come on when you are traveling on interstate or two lane roads. When you are traveling 75 mph and breaks come on all of a sudden on the highway. We are lucky we never got hit in the back of the car going that fast. We will stop 75 to 35 mph in 10 seconds.
Had electrical trouble with your 2023 Hyundai Santa Fe?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2023 Hyundai Santa Fe?
It's a documented issue but not catastrophic. 28 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Based on the 28 complaints filed, electrical issues most often appear around 36,867 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2023/Hyundai/Santa Fe.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.