Frequently Asked Questions

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

• Check for obvious issues first: a loose or damaged gas cap, visible fluid leaks, or recent fuel fill-ups that could cause an evaporative system error.
• Look for other dashboard warnings or drivability changes—stuttering, loss of power, or unusual noises help prioritize urgency.
• If the Taos runs normally and the light is steady, book a diagnostic to read stored codes and avoid worsening damage.
• For any repair covered under warranty, have it performed at a certified dealership to protect coverage and ensure proper OEM parts and procedures.
• Nalley Volkswagen of Alpharetta often costs less than independent shops over time thanks to accurate diagnostics, OEM parts, and longer-term reliability.

What does it mean when the check engine light comes on in a 2025 Volkswagen Taos?

• It indicates the vehicle’s computer has detected a fault—anything from an emissions sensor to an engine misfire.
• Codes usually point to system areas (fuel, ignition, emissions, or sensors) and guide the technician to the root cause.
• A steady light often means a non-urgent issue; a flashing light signals a severe problem that needs immediate attention.
• Diagnostics at our dealership use Volkswagen-specific scanners, ensuring accurate code interpretation and correct repairs under warranty when applicable.
• Choosing Nalley Volkswagen of Alpharetta delivers immediate and long-term savings versus independent shops because our repairs follow factory specs, reducing repeat visits.

What is the most common reason for check engine light on a 2025 Volkswagen Taos?

• Common causes include a loose gas cap, oxygen sensor faults, catalytic converter efficiency codes, and fuel trim issues indicating lean/rich conditions.
• On turbocharged 1.5L engines, intake leaks or misfires can also trigger codes; prompt diagnosis prevents damage to turbo and catalytic systems.
• Our technicians identify root causes quickly with OEM tools, minimizing parts replaced unnecessarily and saving you money long-term.
• Remember: warranty-covered repairs must be completed at a certified dealership to maintain coverage and ensure OEM procedures.

How much does a check engine light diagnostic cost for a 2025 Volkswagen Taos?

• Diagnostic fees vary, but at Nalley Volkswagen of Alpharetta we provide transparent pricing and often lower overall costs than independent shops because we diagnose precisely and avoid unnecessary repairs.
• Simple resets or gas-cap issues can be resolved quickly and affordably; complex repairs (sensors, catalytic converters) are quoted after diagnosis.
• Warranty-covered concerns performed at our certified dealership may reduce or eliminate out-of-pocket cost—repairs under warranty must be done at an authorized dealer.
• We’ll provide estimates for immediate and long-term costs so you can make informed decisions about parts and labor.

How long does a check engine light service take?

• Routine diagnostics typically take 30–90 minutes depending on symptoms and whether a test drive is needed to reproduce the fault.
• Simple fixes (gas cap, single sensor swap) can often be completed the same day; complex repairs may require parts ordering and longer shop time.
• Nalley Volkswagen of Alpharetta prioritizes accurate diagnosis to prevent repeat visits, saving you time and money in the long run.
• If the repair is covered under warranty, work must be done at a certified dealership to preserve coverage and ensure OEM-level quality.