Cleaning the hybrid battery (traction battery) air intake vent To prevent the fuel economy from being affected, visually inspect the hybrid battery (traction battery) air intake vent periodically for clogs. If it is dusty or clogged or if “Maintenance required for Traction battery cooling parts See owner’s manual” is displayed on the multi-information display, clean the air intake vent using the following procedures: Note: Scheduled maintenance of the air intake vent is necessary when In some situations such as when the vehicle is used frequently or in heavy traffic or dusty areas, the air intake vent may need to be cleaned more regularly.For details, refer to “Scheduled Maintenance Guide” or “Owner’s Manual Supplement”. Cleaning the air intake vent 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. Notice: If “Maintenance required for Traction Battery cooling parts See owner’s manual” is displayed on the multi-information display Clean the air intake vent immediately. If the vehicle is continuously driven with the warning message displayed, it may cause a malfunction or output restriction of the hybrid battery (traction battery). Cleaning procedure Turn the power switch off. Remove the air intake vent cover. Pull the cover as shown in the illustration to disengage the 5 claws, starting from the claw in the upper right corner. Pull the cover toward the front of the vehicle to remove it. Remove the filter from the air intake vent cover. If dust has accumulated on the air intake vent cover, remove the dust with a vacuum cleaner, etc. Disengage the claws as shown in the illustration. Remove the filter from the cover. Remove the dust and sand from the filter. Using a vacuum cleaner, etc., absorb dust and sand from the filter by profiling the nozzle lightly along fold. Hold the filter to the light and check if it is not clogged. If the dust or sand cannot be removed completely, contact your Toyota dealer. Install the filter in its original position, and then install the air intake vent cover. If “Maintenance required for Traction battery cooling parts See owner’s manual” was displayed on the multi-information display Start the hybrid system and check that the warning message is no longer displayed. It may be necessary to drive the vehicle for warning message is displayed again then disappears. If the warning message does not disappear after some time, have the vehicle inspected by your Toyota dealer. Note: If the duct or sand on the filter cannot be removed It is recommended to use a vacuum cleaner with plastic brushes. Warning: When cleaning the air intake vent Do not use water or other liquids to clean the air intake vent. If water is applied to the hybrid battery (traction battery) or other components, a malfunction or fire may occur. Before cleaning the air intake vent, make sure to turn the power switch off to stop the hybrid system. Do not put a hand or leg in the air intake vent. If it is caught in a cooling fan, or if it touches a high voltage part that results in an electric shock, death or serious injuries may result. Notice: When cleaning the air intake vent Do not use an air blow gun, etc. Dust may be blown out, possibly causing a malfunction or output restriction of the hybrid battery (traction battery). To prevent damage to the vehicle Observe the following precautions: Do not allow liquid or foreign material to enter the air intake vent. 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. To prevent damage to the filter Observe the following precautions.If the filter is damaged, have it replaced with a new filter by your Toyota dealer. Do not use an air blow gun, etc. Do not press hard a vacuum cleaner, etc.against the filter. Do not use a hard brush, such as a metal brush. Do not break the fold of the filter.