Other Maintenance Items LINCOLN NAUTILUS 2023 Owners Manual

WHAT IS THE CATALYTIC
CONVERTER
The catalytic converter is part of yourvehicle's emissions system and filters harmfulpollutants from the exhaust gas.
CATALYTIC CONVERTER
PRECAUTIONS
WARNING: Do not park, idle or driveyour vehicle on dry grass or other dryground cover. The emission system heatsup the engine compartment and exhaustsystem, creating the risk of fire.
WARNING: The normal operatingtemperature of the exhaust system is veryhigh. Never work around or attempt torepair any part of the exhaust system untilit has cooled. Use special care whenworking around the catalytic converter.The catalytic converter heats up to a veryhigh temperature after only a short periodof engine operation and stays hot after theengine is switched off.
WARNING: Exhaust leaks may resultin entry of harmful and potentially lethalfumes into the passenger compartment. Ifyou smell exhaust fumes inside yourvehicle, have your vehicle inspectedimmediately. Do not drive if you smellexhaust fumes.
To avoid damaging the catalytic converter:
•Do not crank the engine for more than10 seconds at a time.
•Do not run the engine with a spark pluglead disconnected.
•Do not push-start or tow-start yourvehicle. Use booster cables. See JumpStarting Precautions (page 318).
•Use the correct fuel. See Fuel andRefueling (page 203).
•Do not switch the ignition off when yourvehicle is moving.
•Avoid running out of fuel.
•Have the items listed in scheduledmaintenance information performedaccording to the specified schedule.
Note:Do not make any unauthorizedchanges to your vehicle or engine. By law,vehicle owners and anyone whomanufactures, repairs, or services a fleet ofvehicles are not permitted to intentionallyremove an emission control device orprevent it from working.
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2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOMCatalytic Converter

Other Maintenance Items 1
Replace the cabin air filter.Every 20,000 mi(32,000 km)
Replace the engine air filter.Every 30,000 mi(48,000 km)
Replace the spark plugs.Every 100,000 mi(160,000 km)Inspect the accessory drive belt or belts. 2
Change the automatic transmission fluid.Every 150,000 mi(240,000 km)Replace the accessory drive belt or belts. 3
Change the engine coolant. 4At 200,000 mi(320,000 km)
1 Perform these maintenance items within 3,000 mi (4,800 km) of the last engine oil and filter change. Do not exceed the designated distance
for the interval.2 After initial inspection, inspect every other oil change until replaced.3 If not replaced within the last 100,000 mi (160,000 km).4 Initial replacement at 10 years or 200,000 mi (320,000 km), then every five years or 100,000 mi (160,000 km).
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2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOMScheduled Maintenance