Frequently Asked Questions

What is the most common reason for check engine light on a 2022 Lexus LX 600?

• Engine misfires caused by ignition or fuel system faults are common and can trigger warnings.
• Evaporative emissions leaks (loose fuel cap or EVAP system) often produce a persistent code and reduced fuel economy.
• Oxygen sensor or catalytic converter issues appear with rising emissions and reduced MPG if left unaddressed.
• Twin-turbo systems may show turbo underboost codes; early diagnosis prevents costly turbo or exhaust damage.
• Nalley Lexus Smyrna’s technicians identify root causes quickly to avoid expanded repair costs and protect warranties.

How long does a check engine light service take?

• Initial diagnostic scan and inspection typically take 30–90 minutes, depending on symptoms and codes.
• Simple repairs (sensor replacement, fuel cap, small EVAP fixes) can often be completed the same day.
• Complex issues (turbo, catalytic converter, internal engine repairs) require additional time for parts and deeper diagnosis.
• At Nalley Lexus Smyrna we prioritize accurate diagnostics to avoid repeat visits, delivering immediate and long-term savings versus repeated independent fixes.
• Warranty-covered repairs must be performed at a certified dealership to maintain coverage and ensure correct factory procedures.

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

• Check for an obvious issue: loose or missing gas cap—tighten it and monitor the light for change.
• Note the vehicle’s behavior: rough idle, loss of power, or unusual noises can indicate misfires or turbo problems.
• Use an OBD-II scan to capture fault codes; Nalley Lexus Smyrna provides thorough, scanner-based diagnostics.
• If the light is flashing, stop driving and seek immediate inspection to avoid catalytic converter damage.
• For warranty protection and accurate repair, have any needed service completed at a certified dealership like Nalley Lexus Smyrna.

What does it mean when the check engine light comes on in a 2022 Lexus LX 600?

• The light signals that a monitored engine or emissions parameter is outside factory limits—anything from a minor emissions fault to a serious drivability issue.
• It can indicate fuel or ignition problems, sensor failures, EVAP leaks, catalytic degradation, or turbo system faults specific to twin-turbo engines.
• Actual severity is determined by the stored fault codes and live-data testing performed by our certified technicians.
• Addressing the cause at Nalley Lexus Smyrna protects long-term value and often costs less than repeated independent attempts because we resolve root causes efficiently.
• Remember: warranty-covered repairs must be completed at a certified dealership to preserve coverage and use OEM parts and procedures.

How much does a check engine light diagnostic cost for a 2022 Lexus LX 600?

• Diagnostic fees vary by issue complexity; simple scans may be a modest fee, while advanced diagnostics require more time and testing.
• Nalley Lexus Smyrna often costs less than independent shops when factoring accurate diagnosis, genuine parts, and reduced return visits.
• Immediate savings come from precise diagnosis and repair; long-term savings come from avoiding secondary damage like converter or turbo failure.
• If a repair is covered under warranty, it must be performed at a certified dealership to ensure coverage and proper factory repair procedures.
• Contact our service team or schedule online for an upfront estimate and to review available service specials.