Frequently Asked Questions

How long does a check engine light service take?

• Initial diagnostic scan typically takes 30–60 minutes to retrieve and interpret codes with our OEM-grade scanner.
• Simple repairs (loose gas cap, minor sensor swaps) can often be completed same day; more complex issues may require parts and 1–2 days.
• If extensive repairs are needed, we provide a clear estimate and timeline before work begins so you can plan with confidence.
• Using Nalley Volkswagen often means faster turnaround and lower total cost over time due to correct first-time repairs and warranty protection.

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

• Check the gas cap for tightness—an unsecured or damaged cap is a common, easy fix that clears EVAP codes.
• Look for obvious fluid leaks, unusual smells, or performance changes (stalling, rough idle) before driving further.
• If the light is steady, you can often drive cautiously to the dealership; if its flashing, stop and have it inspected immediately.
• When in doubt, bring your Tiguan to our certified technicians so repairs covered by warranty are properly performed at a certified dealership.

What does it mean when the check engine light comes on in a 2017 Volkswagen Tiguan?

• It means the engine control module has detected a fault with emissions, ignition, fuel, or sensor systems; severity ranges from minor to urgent.
• A steady light usually signals a non-critical fault; a flashing light indicates a severe misfire that can damage the catalytic converter.
• Only a full OBD-II scan will reveal the specific codes—our factory diagnostics identify root causes and the correct repair path.
• For warranty protection and long-term savings, any covered repairs must be completed at a certified dealership like Nalley Volkswagen of Alpharetta.

What is the most common reason for check engine light on a 2017 Volkswagen Tiguan?

• The most frequent cause is a loose or faulty gas cap leading to an EVAP system code; its often easy to fix and inexpensive to resolve.
• Other common culprits include oxygen sensors, ignition coils or spark plugs, and EVAP leaks—each has different cost and urgency implications.
• Treating problems early with dealer diagnostics can prevent larger repairs and save money over time by protecting emissions systems and fuel efficiency.
• We offer transparent estimates and factory-trained technicians, and warranty work must be performed at a certified dealership to remain valid.

How much does a check engine light diagnostic cost for a 2017 Volkswagen Tiguan?

• Diagnostic fees cover an OEM scan, live-data review, and a written estimate—Nalley Volkswagen of Alpharetta offers competitive, transparent pricing.
• Our dealership often costs less than many independent shops when you factor accurate diagnosis, correct parts, and long-term savings from avoiding repeat repairs.
• If your repair is covered under warranty, the work and parts must be completed at a certified dealership to preserve coverage.
• Check current offers and service specials before you arrive: Service Specials, or schedule an appointment online.