2024 Toyota Highlander Check Engine Light Reset

The check engine light reset on a 2024 Toyota Highlander should be handled with care: a simple reset may clear the warning temporarily while leaving the underlying fault unresolved. At Larry H. Miller Toyota Peoria in Peoria, AZ, our approach is to diagnose first, then reset. That ensures the cause is repaired using OEM parts and factory procedures so the condition won’t return. Our technicians are Toyota-trained and document every repair; that transparency protects your warranty and preserves vehicle value. We recommend against DIY resets unless you’re certain the issue is fixed — a reset without repair can mask problems that lead to decreased fuel economy, higher emissions, or progressive engine damage. When you bring your Highlander to us, we provide a clear repair timeline, cost estimate, and options to take advantage of service specials. If you need flexibility, ask about our service financing so you can address the issue now and pay over time. To get started, schedule service online for a prompt diagnostic and trusted service experience.

2024 Toyota Highlander Check Engine Light Codes

Common check engine light codes on a 2024 Toyota Highlander include P0300 (random/multiple misfires), P0420 (catalyst system efficiency below threshold), P0171 (system too lean), P0455 (evaporative emission system leak), and P0135 (oxygen sensor heater circuit). Ignoring these codes can escalate costs: a misfire left unresolved risks cylinder damage and reduced engine life; an untreated P0420 can lead to premature catalytic converter replacement, which can be costly; EVAP leaks increase emissions and reduce fuel efficiency. At Larry H. Miller Toyota Peoria our certified technicians use factory-grade scanners and OEM parts to diagnose and repair these issues, often at lower total cost than independents because we get it right the first time. We prioritize convenience with quick check-ins and clear communication; take advantage of our online tools to view inventory or schedule work, and check our service specials for additional savings. Preserve performance, fuel economy, and resale value by addressing codes promptly — schedule service today for reliable diagnostics in Peoria, AZ.

Check Engine Light Flashing

A flashing check engine light on a 2024 Toyota Highlander is a critical alert: it usually indicates active misfires that can overheat the catalytic converter and cause severe engine damage. If you see a flashing light, reduce speed, avoid heavy loads, and arrange a prompt diagnosis. At Larry H. Miller Toyota Peoria we treat flashing lights as high priority; our technicians will perform an immediate inspection, scan trouble codes, and provide a clear repair plan. We back repairs with OEM parts, factory procedures, and warranty support — and we offer service financing to make urgent repairs manageable. Watch our current service specials for potential savings and loyalty benefits that reward repeat customers. For immediate support, schedule service online or contact our service department; our team will help you determine whether towing or a same-day repair appointment is needed. Don’t delay — quick attention protects your Highlander and avoids much higher repair bills later.