Replace and tighten the 10 mm hexagonal bolt with new washer and replace the engine under cover. Place a drain pan beneath the plug and carefully and slowly undo the 10 mm hexagonal bolt – be sure to wear safety goggles as the draining coolant WILL splash.Īllow coolant to completely drain, about 5 minutes.ĭiscard the old gasket and replace with a new gasket. I used a 18″ breaker bar to break the bolt loose, then hand untighten the bolt: Do NOT mistaken it for the automatic transmission fluid drain plug, which uses the same 10 mm hexagonal bolt. This is a 10 mm hexagonal bolt perpendicular to the axle and close to and beneath the transmission fluid filler and drainage plugs. Locate the inverter coolant drainage plug. Remove the cap on the inverter coolant reservoir and set aside. The following steps should take you approximately 20 minutes. Exchanging the Inverter Coolantīelieve it or not, the hardest part of this maintenance procedure is done. Replacing the positive crankcase ventilation valve (PCV)ĭoing all aforementioned services together should take you approximately 3 hours.Automatic transmission fluid exchange WS.Since removing the engine under cover is an involved procedure in itself, you might want to consider performing these maintenance service at the same time if possible: This is what the cover looks like and where the bolts (yellow) and clips (red) are located to visually help you expedite the removal process: Removing both clips and bolts should take you approximately 15 minutes if it is your first time and subsequently quicker. If the clips are worn and brittle, this would be a good time to replace them. This involves removing six 10 mm bolts and 13 push-pin retainer clips. In order to access the inverter coolant drain plug, you’ll need to remove the engine under cover. Place a jack stand on each front jack support on the chassis. Working on a flat and level surface, place wheel chocks on the rear wheels and then jack up the front of the car. Do not attempt unless you are wearing a pair. ![]() ![]() Removing the Engine Under Coverīecause you’ll be working underneath your car, safety goggles are an absolute necessity. Regardless, it’s a good idea to have an extra jug laying around in the event you need to top off the coolant reservoir. You will need at least one gallon, but having two jugs on hand just in case is never a bad idea. You do not need to pre-mix it with water as you would with the traditional green stuff from the local auto supply store. Toyota’s Super Long Life Coolant lasts an incredibly long time and comes pre-diluted, meaning it is ready to use right out of the jug.
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