Frequently Asked Questions

What does it mean when the check engine light comes on in a 2026 Jeep Grand Wagoneer L?

• It signals that the vehicle’s onboard diagnostics detected an emissions, fuel, ignition, or sensor issue. Common causes include oxygen sensor faults, catalytic converter performance, misfires, or EVAP system leaks.
• At Larry H. Miller Chrysler Jeep Dodge Ram Boise we use factory-grade scanners and certified technicians to pinpoint the diagnostic trouble codes and recommend repairs that restore performance and fuel efficiency.
• Repairing issues early at our dealership can lower immediate repair costs and avoid long-term damage. We offer service financing to help you get the work done now and pay later.
• To book expert diagnosis with OEM parts and transparent pricing, schedule service today or check our service specials first.

How long does a check engine light service take?

• Most diagnostic checks are completed within 45–90 minutes; follow-up repairs vary by complexity. Simple sensor replacements can often be completed the same day.
• Our Boise service center prioritizes quick turnarounds without cutting corners: certified technicians work with OEM parts and tested procedures to get you back on the road faster and with lasting results.
• We offer comfortable customer amenities and real-time updates so you know the status of your 2026 Jeep Grand Wagoneer L. Use our online tools to schedule appointment.

How much does a check engine light diagnostic cost for a 2026 Jeep Grand Wagoneer L?

• Diagnostics at our dealership are competitively priced and often cost less than independent shops once you factor in accuracy, warranty coverage, and long-term savings. A typical diagnostic fee covers scanning, code interpretation, and a written estimate for repairs.
• Choosing Larry H. Miller Chrysler Jeep Dodge Ram Boise means you get factory-trained techs, OEM parts, and repair warranties—any warranty-covered repairs must be completed at a certified dealership to remain valid.
• We highlight immediate and long-term savings: accurate diagnostics prevent unnecessary parts replacement, preserve resale value, and avoid cascading failures that raise costs later. Ask about service financing to manage payment.
• Review current service specials or schedule service online for convenient appointment times.

What is the most common reason for check engine light on a 2026 Jeep Grand Wagoneer L?

• Common triggers include a failing oxygen sensor, loose gas cap, misfires from spark plugs or ignition coils, and issues with the EVAP system. Left unaddressed, these can reduce fuel economy and stress engine components.
• Our Boise technicians diagnose the root cause rather than guessing, delivering repairs that improve performance and lower operating costs over time.
• We recommend using OEM parts and scheduled maintenance to avoid repeat issues and take advantage of warranty coverage when applicable.

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

• Start with a secure gas cap and note any drivability changes. If the light persists or flashes, bring your 2026 Jeep Grand Wagoneer L to our dealership immediately.
• A flashing light often indicates a severe misfire or catalytic converter risk—prompt professional inspection at Larry H. Miller Chrysler Jeep Dodge Ram Boise can prevent costly downstream damage.
• To arrange fast, expert attention, schedule service now and review our current service specials for savings.