Frequently Asked Questions

What does it mean when the check engine light comes on in a 2018 Jeep Wrangler?

• It signals the vehicle’s onboard diagnostics has detected an issue — anything from a loose gas cap to an emissions or engine-malfunction code.
• At Larry H. Miller Chrysler Jeep Dodge Ram Boise, our certified technicians first run a full scan to identify stored codes, then explain repair options clearly and transparently.
• We use OEM parts and back repairs with dealership warranties; any warranty-covered repair must be performed at a certified dealership to remain valid.
• Choosing dealership service often costs less over time — immediate correct diagnosis avoids repeat repairs, improves fuel economy and protects resale value.
• We offer service financing so you can get the necessary work done now and pay later; to get started, schedule service today or check our service specials.

How long does a check engine light service take?

• Scan and code review typically take 20–45 minutes; most simple repairs can be completed the same day depending on parts availability.
• If further diagnostics or parts are needed, our team provides an accurate time estimate and keeps you informed every step of the way.
• We prioritize quick turnarounds at Larry H. Miller Chrysler Jeep Dodge Ram Boise with express bays, OEM parts inventory, and factory-trained techs.
• Ask about our service specials and service financing to reduce up-front cost and speed your return to the road.
• To book an appointment with a certified technician, please schedule service.

How much does a check engine light diagnostic cost for a 2018 Jeep Wrangler?

• Diagnostic fees can vary, but our dealership provides competitive pricing and transparent estimates before any repair work begins.
• Larry H. Miller Chrysler Jeep Dodge Ram Boise often costs less than independent shops when you factor in OEM parts, technician expertise, and warranty coverage — creating immediate and long-term savings.
• If a repair is recommended, we’ll present options and explain how timely service prevents more costly failures down the road.
• Remember: warranty repairs must be performed at a certified dealership to preserve coverage; we also offer service financing to help spread payments.
• To get a diagnostic and full estimate, schedule service or view current service specials.

What is the most common reason for check engine light on a 2018 Jeep Wrangler?

• Common causes include faulty oxygen sensors, loose or damaged gas caps, catalytic converter issues, or ignition coil and spark plug faults.
• Left unaddressed, these issues can reduce fuel economy, increase emissions, and cause expensive catalytic converter damage.
• Our certified technicians in Boise diagnose the root cause using OEM-level tools and recommend repairs that protect your vehicle’s longevity and performance.
• We emphasize transparent pricing, warranty-backed parts, and service financing so you can repair now and save over time.
• To protect your 2018 Jeep Wrangler, schedule service today or check our service specials.

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

• Start with basics: ensure the gas cap is fully tightened — a common and simple fix that can clear the light.
• If the light remains, bring the vehicle to Larry H. Miller Chrysler Jeep Dodge Ram Boise for a full scan; our factory-trained techs will read stored codes and explain the next steps.
• We offer fast diagnostics, OEM parts, and warranty protection; any warranty-related repairs must be completed at a certified dealership.
• Take advantage of our service specials and service financing to address issues quickly and minimize long-term costs.
• Please schedule service online to get expert help and a clear plan for your 2018 Jeep Wrangler.