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450 7-3. Do-it-yourself maintenance COROLLA H/B_U frequent cleaning or early replace- ment may be required. (For sched- uled maintenance information, please refer to the “Scheduled Maintenance Guide” or “Owner’s Manual Supplement”.) ■ If air flow from the vents decreases dramatically The filter may be clogged. Check the filter and replace if necessary. ■ If the electronic key battery is depleted The following symptoms may occur: ● The smart key system and wire- less remote control will not func- tion properly. ● The operational range will be reduced. Flathead screwdriver Lithium battery CR2032 ■ Use a CR2032 lithium battery ● Batteries can be purchased at your Toyota dealer, local electrical appliance shops or camera stores. ● Replace only with the same or equivalent type recommended by the manufacturer. ● Dispose of used batteries accord- ing to local laws. NOTICE ■ When using the air condition- ing system Make sure that a filter is always installed. Using the air conditioning system without a filter may cause damage to the system. ■ To prevent damage to the fil- ter cover When moving the filter cover in the direction of arrow to release the fitting, pay attention not to apply excessive force to the claws. Otherwise, the claws may be damaged. Electronic key battery Replace the battery with a Items to prepare |