Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2025 Hyundai IONIQ 5?

• Initial diagnostic fees commonly cover a full scan, inspection, and technician time; Nalley Hyundai often costs less than independent shops while delivering factory-trained expertise.
• Diagnostics identify codes and recommended repairs; addressing issues early reduces immediate repair bills and prevents long-term, more expensive damage.
• If a repair is covered under warranty, it must be performed at a certified dealership to preserve coverage—our certified service team handles warranty work correctly and efficiently.
• We provide transparent estimates and discuss parts, labor, and potential savings before any work begins to help you decide wisely.

What does it mean when the check engine light comes on in a 2025 Hyundai IONIQ 5?

• The light signals that the vehicle’s onboard diagnostics detected a fault in powertrain, battery management, charging system, or vehicle communications.
• On an electric vehicle like the IONIQ 5, common causes include 12V accessory battery issues, charging faults, software/communication errors, or sensor malfunctions.
• Ignoring the alert can lead to degraded performance, reduced range, or safety issues; diagnosing early prevents cascading damage and higher repair costs.
• Our factory-trained technicians use Hyundai-specific tools and software to pinpoint the exact cause and recommend the most cost-efficient repair path.

What is the first thing to check when the check engine light comes on?

• Start with obvious items you can safely verify: confirm charging cable and connector are secure if you were charging, and check for dashboard messages related to charging or battery.
• Check the 12V accessory battery condition—low voltage often causes fault codes and unexpected warnings on EVs.
• If no obvious cause appears, bring the vehicle to our service center so technicians can run a full diagnostic scan; clearing the light without repair may mask a serious problem.
• Remember: warranty-covered repairs must be completed at a certified dealership to maintain coverage and ensure long-term savings and protection.

What is the most common reason for check engine light on a 2025 Hyundai IONIQ 5?

• Common causes include 12V battery faults, sensor or communication errors, charging system irregularities, or software glitches affecting vehicle control systems.
• For EVs, many alerts stem from electrical or thermal management sensors rather than traditional combustion issues; addressing them promptly protects battery life and range.
• Nalley Hyundai’s technicians have direct access to Hyundai service bulletins and software updates to resolve root causes quickly and often more affordably than smaller independent shops.
• Repairs covered under warranty should be completed at a certified dealership to ensure proper parts, calibration, and coverage continuity.

How long does a check engine light service take?

• Diagnostic scans and initial inspections typically take 30–90 minutes depending on symptoms and whether live data logging is required.
• Simple fixes (software resets, sensor replacements, or 12V battery service) can often be completed the same day; complex repairs or parts orders may extend timing.
• Our certified technicians and well-stocked parts department help reduce downtime, delivering immediate and long-term savings compared with slower turnaround at less-equipped shops.
• If a repair is warranty-covered, having the work done at our dealership ensures proper documentation and preserves your coverage for any follow-up service.