Frequently Asked Questions

What is the most common reason for check engine light on a 2020 Hyundai NEXO Blue?

• Sensor alerts: oxygen or emission-related sensors and control modules commonly trigger warnings on advanced drivetrains.
• Software updates: modern vehicles, including the 2020 Hyundai NEXO Blue, often need ECU or module updates that clear intermittent faults.
• Accessory and emissions components: faults in exhaust monitoring, air/fuel trim, or related electronics can illuminate the light.
• Dealer advantage: addressing these issues at Nalley Hyundai often costs less than independent shops while providing factory-trained technicians, genuine parts, and immediate and long-term savings.
• Warranty note: if a repair is covered by warranty, it must be performed at a certified dealership to preserve coverage.

How long does a check engine light service take?

• Typical diagnostic time: most initial diagnostics for a 2020 Hyundai NEXO Blue take about 30–90 minutes, depending on code complexity and system access.
• Repair times vary: simple fixes can be same-day; more involved repairs or parts orders may take longer.
• Efficient process: Nalley Hyundai prioritizes accurate diagnostics and uses factory tools so repairs are faster and more reliable, delivering better long-term value than many independent shops.
• Communication: we provide time estimates up front and coordinate warranty-covered repairs that must be done at a certified dealership.

What does it mean when the check engine light comes on in a 2020 Hyundai NEXO Blue?

• General alert: the check engine light indicates the vehicle’s onboard diagnostics detected a fault—anything from a minor sensor issue to a system needing immediate attention.
• Severity varies: a steady light often signals non-urgent faults; flashing usually means immediate attention is required to prevent damage.
• Special systems: on the 2020 Hyundai NEXO Blue, diagnostics cover fuel cell and EV-related systems as well as traditional engine electronics, so professional scan tools are essential.
• Service benefits: Nalley Hyundai’s factory-trained technicians use OEM diagnostics to identify true cause and deliver both immediate and long-term savings compared with many independents.

How much does a check engine light diagnostic cost for a 2020 Hyundai NEXO Blue?

• Typical range: diagnostics at Nalley Hyundai generally fall between $90 and $199 depending on time and complexity; exact pricing is provided before work begins.
• Value proposition: our dealership frequently costs less than independent shops once you factor in accurate diagnosis, genuine parts, and factory-trained labor—delivering immediate and long-term savings.
• Warranty and repairs: if a repair is covered by warranty it must be completed at a certified dealership to protect your coverage and avoid future costs.
• Transparent process: we provide a full estimate before repairs and discuss options, timelines, and any available service specials at Nalley Hyundai.

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

• Observe vehicle behavior: note sounds, loss of power, smells, or drivability issues and share these with the technician.
• Instrument cluster and alerts: check for related messages or warnings and record any diagnostic codes if displayed.
• Simple checks: confirm that caps and visible connectors (fuel or filler caps) are secure, but avoid tampering with high-voltage or hydrogen systems—safety first.
• Bring it in promptly: for accurate diagnosis and warranty protection, have Nalley Hyundai scan the system with OEM tools—repairs covered by warranty must be completed at a certified dealership.