Engine compartment Components Washer fluid tank (Adding the washer fluid) Engine coolant reservoir (Checking the coolant) Fuse boxes (Checking and replacing fuses) Engine oil level dipstick (Checking the engine oil) Engine oil filler cap (Adding engine oil) Power control unit coolant reservoir (Checking the coolant) Brake fluid reservoir (Checking and adding the brake fluid) 12-volt battery (12-volt battery) Radiator (Checking the radiator and condenser) Condenser (Checking the radiator and condenser) Electric cooling fans Engine oil Checking Engine oilChecking and adding the engine oil With the engine at operating temperature and turned off, check the oil level on the dipstick. Checking the engine oil Park the vehicle on level ground. After warming up the engine and turning off the hybrid system, wait more than 5 minutes for the oil to drain back into the bottom of the engine. Holding a rag under the end, pull the dipstick out. Wipe the dipstick clean. Reinsert the dipstick fully. Holding a rag under the end, pull the dipstick out and check the oil level. Low Normal Excessive The shape of the dipstick may differ depending on the type of vehicle or engine. Wipe the dipstick and reinsert it fully. Checking the oil type and preparing the item needed Make sure to check the oil type and prepare the items needed before adding oil. Engine oil selectionLubrication system Oil quantity (Low Full)1.6 qt. (1.5 L, 1.3 Imp. qt.) ItemClean funnel Adding engine oil If the oil level is below or near the low level mark, add engine oil of the same type as that already in the engine. Remove the oil filler cap by turning it counterclockwise. Add engine oil slowly, checking the dipstick. Install the oil filler cap by turning it clockwise. Note: Engine oil consumption A certain amount of engine oil will be consumed while driving. In the following situations, oil consumption may increase, and engine oil may need to be refilled in between oil maintenance intervals. When the engine is new, for example directly after purchasing the vehicle or after replacing the engine If low quality oil or oil of an inappropriate viscosity is used When driving at high engine speeds or with a heavy load, or when driving while accelerating or decelerating frequently When leaving the engine idling for a long time, or when driving frequently through heavy traffic Warning: Used engine oil Used engine oil contains potentially harmful contaminants which may cause skin disorders such as inflammation and skin cancer, so care should be taken to avoid prolonged and repeated contact. To remove used engine oil from your skin, wash thoroughly with soap and water. Dispose of used oil and filters only in a safe and acceptable manner. Do not dispose of used oil and filters in household trash, in sewers or onto the ground.Call your Toyota dealer, service station or auto parts store for information concerning recycling or disposal. Do not leave used engine oil within the reach of children. Notice: To prevent serious engine damage Check the oil level on a regular basis. When replacing the engine oil Be careful not to spill engine oil on the vehicle components. Avoid overfilling, or the engine could be damaged. Check the oil level on the dipstick every time you refill the vehicle. Be sure the engine oil filler cap is properly tightened. Power control unit coolant Checking Power control unit coolant Engine coolant Checking Engine coolant Cooling systemChecking the coolant Engine coolant reservoir The coolant level is satisfactory if it is between the “MAX” and “MIN” lines on the reservoir when the engine is cold. Reservoir cap “MAX” line “MIN” line If the level is on or below the “MIN” line, add coolant up to the “MAX” line. (If your vehicle overheats) Power control unit coolant reservoir The coolant level is satisfactory if it is between the “FULL” and “LOW” lines on the reservoir when the hybrid system is cold. Reservoir cap “FULL” line “LOW” line If the level is on or below the “LOW” line, add coolant up to the “FULL” line. (If your vehicle overheats) Note: Coolant selection Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology. U.S.A.: “Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deionized water. (Minimum temperature: -31°F [-35°C]) Canada: “Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deionized water. (Minimum temperature: -44°F [-42°C]) For more details about coolant, contact your Toyota dealer. If the coolant level drops within a short time of replenishing Visually check the radiator, hoses, engine/power control unit coolant reservoir caps, drain cock and water pump.If you cannot find a leak, have your Toyota dealer test the cap and check for leaks in the cooling system. Warning: When the hybrid system is hot Do not remove the engine/power control unit coolant reservoir caps. The cooling system may be under pressure and may spray hot coolant if the cap is removed, causing serious injuries, such as burns. Notice: When adding coolant Coolant is neither plain water nor straight antifreeze. The correct mixture of water and antifreeze must be used to provide proper lubrication, corrosion protection and cooling. Be sure to read the antifreeze or coolant label. If you spill coolant Be sure to wash it off with water to prevent it from damaging parts or paint. Radiator CondenserChecking the radiator and condenser Check the radiator and condenser and clear away any foreign objects. If either of the above parts is extremely dirty or you are not sure of their condition, have your vehicle inspected by your Toyota dealer. Warning: When the hybrid system is hot Do not touch the radiator or condenser as they may be hot and cause serious injuries, such as burns. Brake Fluid Checking and adding the brake fluid Checking fluid level The brake fluid level should be between the “MAX” and “MIN” lines on the tank. Adding fluid Slide and lift up the rubber strip to partly remove it as shown. Disconnect the claws and remove the service cover. Remove the reservoir cap. Add brake fluid slowly while checking the fluid level. Make sure to check the fluid type and prepare the necessary item. Fluid type FMVSS No.116 DOT 3 or SAE J1703 brake fluid FMVSS No.116 DOT 4 or SAE J1704 brake fluid Item Clean funnel Note: Brake fluid can absorb moisture from the air Excess moisture in the brake fluid can cause a dangerous loss of braking efficiency. Use only newly opened brake fluid. Warning: When filling the reservoir Take care as brake fluid can harm your hands and eyes and damage painted surfaces.If fluid gets on your hands or in your eyes, flush the affected area with clean water immediately. If you still experience discomfort, see a doctor. Notice: If the fluid level is low or high It is normal for the brake fluid level to go down slightly as the brake pads wear out or when the fluid level in the accumulator is high.If the reservoir needs frequent refilling, there may be a serious problem. Battery (12-volt battery) Battery checking Battery (12-volt battery)12-volt battery Check the 12-volt battery as follows. 12-volt battery exterior Make sure that the 12-volt battery terminals are not corroded and that there are no loose connections, cracks, or loose clamps. Terminals Hold-down clamp Note: Before recharging When recharging, the 12-volt battery produces hydrogen gas which is flammable and explosive. Therefore, observe the following precautions before recharging: If recharging with the 12-volt battery installed on the vehicle, be sure to disconnect the ground cable. Make sure the charger is off when connecting and disconnecting the charger cables to the 12-volt battery. After recharging/reconnecting the 12-volt battery Unlocking the doors using the smart key system may not be possible immediately after reconnecting the 12-volt battery. If this happens, use the wireless remote control or the mechanical key to lock/unlock the doors. Start the hybrid system with the power switch in ACC. The hybrid system may not start with the power switch turned off. However, the hybrid system will operate normally from the second attempt. The power switch mode is recorded by the vehicle. If the 12-volt battery is reconnected, the vehicle will return the power switch mode to the status it was in before the 12-volt battery was disconnected. Make sure to turn off the power before disconnecting the 12-volt battery. Take extra care when connecting the 12-volt battery if the power switch mode prior to discharge is unknown. If the system will not start even after multiple attempts, contact your Toyota dealer. Warning: Child safety 12-volt battery precautions Chemicals in the 12-volt battery The 12-volt battery contains poisonous and corrosive sulfuric acid and may produce hydrogen gas which is flammable and explosive. To reduce the risk of death or serious injury, take the following precautions while working on or near the 12-volt battery: Do not cause sparks by touching the 12-volt battery terminals with tools. Do not smoke or light a match near the 12-volt battery. Avoid contact with eyes, skin and clothes. Never inhale or swallow electrolyte. Wear protective safety glasses when working near the 12-volt battery. Keep children away from the 12-volt battery. Where to safely charge the 12-volt battery Always charge the 12-volt battery in an open area. Do not charge the 12-volt battery in a garage or closed room where there is insufficient ventilation. Emergency measures regarding electrolyte If electrolyte gets in your eyesFlush your eyes with clean water for at least 15 minutes and get immediate medical attention. If possible, continue to apply water with a sponge or cloth while traveling to the nearest medical facility. If electrolyte gets on your skinWash the affected area thoroughly. If you feel pain or burning, get medical attention immediately. If electrolyte gets on your clothesIt can soak through clothing on to your skin. Immediately take off the clothing and follow the procedure above if necessary. If you accidentally swallow electrolyteDrink a large quantity of water or milk. Get emergency medical attention immediately. When disconnecting the 12-volt battery Do not disconnect the negative (-) terminal on the body side. The disconnected negative (-) terminal may touch the positive (+) terminal, which may cause a short and result in death or serious injury. Notice: When recharging the 12-volt battery Never recharge the 12-volt battery while the hybrid system is operating. Also, be sure all accessories are turned off. Washer Checking Fluid Washer Adding the washer fluid Add washer fluid in the following situations: A washer does not work. The warning message appears on the multi-information display. Warning: When adding washer fluid Do not add washer fluid when the hybrid system is hot or operating as washer fluid contains alcohol and may catch fire if spilled on the engine, etc. Notice: Do not use any fluid other than washer fluid Do not use soapy water or engine antifreeze instead of washer fluid.Doing so may cause streaking on the vehicle’s painted surfaces, as well as damaging the pump leading to problems of the washer fluid not spraying. Diluting washer fluid Dilute washer fluid with water as necessary.Refer to the freezing temperatures listed on the label of the washer fluid bottle.