Cleaning the DC/DC Converter air intake vent and filter To prevent the 12-volt battery from discharge, visually inspect the DC/DC Converter air intake vent periodically for dust and clogs. If it is dusty or clogged or if “ Maintenance required for DCDC converter cooling parts See Owner’s Manual” is shown on the multi-information display, clean the air intake vent using the following procedures: Cleaning the air intake vent Remove the dust from the air intake vent with a vacuum cleaner, etc. Make sure to only use a vacuum to suck out dust and clogs. Attempting to blow out dust and clogs using an airgun, etc. may push it into the air intake vent. (When cleaning the air intake vent) If dust and clogs cannot be completely removed If dust and clogs cannot be completely removed with the air intake vent cover installed, remove the cover and clean the filter. Turn the power switch off. Using a Phillips screwdriver, remove the clip. Remove the air intake vent cover. Pull the cover as shown in the illustration to disengage the 8 claws, starting from the claw in the upper right corner and pull the cover toward the front of the vehicle to remove it. Remove the air intake vent filter. Disengage the 4 center claws from the filter. Disengage the claws in the order of and to remove the filter from the cover. Remove the dust and clogs from the filter using a vacuum cleaner, etc. Make sure to also remove the dust and clogs from the inside of the air intake vent cover. Reinstall the filter to the cover. Engage the claws in the order of and . Engage the 4 center claws to install the filter. Make sure that the filter is not crooked or deformed when installing it. Install the air intake vent cover. Insert the tab of the cover as shown in the illustration and push the cover to engage the 8 claws. Install the clip. Note: Cleaning the air intake vent Dust in the air intake vent may interfere with the cooling of the DC/DC converter. If the cooling performance/capacity of the DC/DC converter becomes limited, the 12-volt battery may discharge. Inspect and clean the air intake vent periodically. Improper handling of the air intake vent cover and filter may result in damage to them. If you have any concerns about cleaning the filter, contact your Toyota dealer. If “ Maintenance required for DCDC converter cooling parts See Owner’s Manual” is shown on the multi-information display If this warning message is shown on the multi-information display, remove the air intake vent cover and clean the filter. (If dust and clogs cannot be completely removed) After cleaning the air intake vent, start the hybrid system and check that the warning message is no longer shown.It may take approximately 20 minutes after the hybrid system is started until the warning message disappears. If the warning message does not disappear, have the vehicle inspected by your Toyota dealer. Warning: When cleaning the air intake vent Before cleaning the air intake vent, make sure to turn the power switch off to stop the hybrid system. Do not use water or other liquids to clean the air intake vent. If water is applied to the DC/DC converter or other components, a malfunction or fire may occur. Notice: When cleaning the air intake vent When cleaning the air intake vent, make sure to only use a vacuum to suck out dust and clogs. If a compressed air blow gun, etc. is used to blow out dust and clogs, the dust or clogs may be pushed into the air intake vent, which may affect the performance of the DC/DC converter and cause a malfunction. To prevent damage to the vehicle Do not allow water or foreign matter to enter the air intake vent when the cover is removed. Carefully handle the removed filter so that it will not be damaged. If the filter is damaged, have it replaced with a new filter by your Toyota dealer. Make sure to reinstall the filter and cover to their original positions after cleaning. Do not install anything to the air intake vent other than the exclusive filter for this vehicle or use the vehicle without the filter installed. If “ Maintenance required for DCDC converter cooling parts See Owner’s Manual” is shown on the multi-information display If the vehicle is continuously driven with the warning message (indicating that the cooling performance/capacity of the DC/DC converter may become limited) displayed, the DC/DC converter may malfunction. If the warning message is displayed, clean the air intake vent immediately.