2018-MKX-Owner's Manual

Maintenance

Note: If your vehicle has a battery cover, after cleaning or replacing the battery, make sure you reinstall it. Note: See an authorized dealer for battery access, testing, or replacement. To make sure the battery management system works correctly, do not connect an electrical device ground connection directly to the battery negative post. This can cause inaccurate measurements of the battery condition and potential incorrect system operation. Note: If you add electrical accessories or components to the vehicle, it may adversely affect battery performance and durability. This may also affect the performance of other electrical systems in the vehicle. If you see any corrosion on the battery or terminals, remove the cables from the terminals and clean with a wire brush. You can neutralize the acid with a solution of baking soda and water.

Because your vehicle’s engine is electronically-controlled by a computer, some engine control settings are maintained by power from the battery. Some engine computer settings, like the idle trim and fuel trim strategy, optimize the driveability and performance of the engine. The clock and radio station presets are also maintained in memory by power from the low-voltage battery. These settings are erased when a technician disconnects and connects the low-voltage battery. To restore the settings, do the following: Note: Until you switch the ignition to the on position, you will receive a message in your information display stating that your vehicle is not in park. 1. Apply the parking brake. 2. Shift into park (P) or neutral (N). 3. Switch off all accessories. 4. Press the brake pedal and start your vehicle.

5. Run the engine until it reaches normal operating temperature. While the engine is warming up, complete the following: Reset the clock. See Audio Unit (page Windows (page 104). Reset the radio station presets. See Audio Unit (page 402). 6. Allow the engine to idle for at least one minute. 7. Drive the vehicle at least 10 mi (16 km) to completely relearn the idle trim and fuel trim strategy. Note: If you do not allow the engine to relearn the idle and fuel trim strategy, the idle quality of your vehicle may be adversely affected until the engine computer eventually relearns the idle trim and fuel trim strategy. Note: Certain features may not operate if the battery monitor system is not reset with a scan tool following a jump start or battery replacement. Normal electrical accessory operation should resume after your vehicle is left undisturbed for 8 hours. 402). Reset the power windows bounce-back feature. See Power

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MKX (CD9) Canada/United States of America, enUSA, Edition date: 201707, First Printing