Pull out the transmission fluid dipstick, wipe it clean, re-insert it and pull it out again to check the level. The white stains that you see on the bottom of the transmission pan is from the road salt that spread on the roads here in the winter. Your Toyota dealership isn't the only place to locate trusted replacement parts for your Corolla. Honda automatics are not conventional automatics. Carefully tip the strainer in order to drain the fluid into the drain pan.
Will the synthetic fluid be a problem? On mine, I only had to replace 2 liters in addition to the 4 liters I originally added, for a total of 6 liters. Before starting, mark a 1 gallon clear jug ie. The recommended torque for the strainer bolts is 96 in. Hold the pan up with one hand and loosen the remaining two front bolts with your other hand. This step netted me another ¼ liter of transmission fluid. Slide the used oil catch container to just below the drain bolt.
Ensure that the longer bolt goes in the correct position. There are 18 bolts securing the transmission pan to the transmission. Place a catch pan under the drain plug green circle. Block the rear tires, set the parking brake, jack up the front of the car and lower it on to jack stands. Lower the vehicle so that it is level. Just a floating gear shift. I only had a fine coating of metal filings on the magnets and the bottom of the pan.
Remove the return line from oil cooler. Removing the dipstick before the moment you intend to add fluid is risky, especially when working on the car outside. If only I could have known sooner. The consistency of the Automatic Transmission Fluid is much the same as to that of brake fluid on your Toyota Corolla, but never should one be used in place of the other. There was no residue on the transmission flange.
Once you have the cooler return line correctly identified, you can place a drain hose on that line to a waste bucket. Ensure that there is no residual gasket on either the pan or the transmission prior to proceeding to the next step. Then gently tip the pan to allow the fluid to drain. I went around the pan twice just to make sure all bolts were properly torqued. Regular transmission service is necessary to keep your car on the road. Remove the transmission fluid dipstick, wipe it clean and set it aside in a safe place.
The engine in your 2010 Toyota Corolla should be running when you perform a transmission fluid level check, otherwise it will be inaccurate. With the engine off, add 4 liters of clean transmission fluid to the transmission through the dipstick hole. This ensure a complete replenishment of the fluid in the transmission, oil cooler, and auxiliary circuits. My 2 Hondas with auto trannies are a Pilot and a Ridgeline. Aftermarket transmission shops and at-home mechanics neglecting to use the Toyota-specific Transmission Fill System may under-fill the transmission, which may lead to erratic shift patterns or catastrophic failure of the system. All my Google references go to sites other than anything Toyota, so that could make the source suspect.
It's not every day that you discover you need a replacement Automatic Transmission Fluid to fix your car or truck. In my case, the pan dropped as soon as I loosened the front two bolts. Warning: Fluid temperatures can exceed 350°F in a hot transmission, so be very careful when draining. Contact your dealership for a replacement washer. After about a week, the car would not make it up the ramp in my parking garage at work so I had to reverse it up to my spot. I want to say my mechanic put coolant in there to sabotage me, but I really don't think that happened.
Make a mental note of which bolts go where. Recommended torque for the drain plug is 36 ft. As transmissions are upgraded and improved, so must the automatic transmission fluid be upgraded. Be sure the drain pan is properly centered as the fluid will come out with some force. Some of the bolts protrude through the transmission flange and are exposed to the elements on the top side, and were already starting to corrode, so I applied antiseize compound to each of the bolts prior to insertion.
The video above shows where the transmission fluid dipstick is located in your Corolla and how to check the transmission fluid level. If fluid is coming out of the metal return line from the cooler, you have correctly identified the right hose for the procedure. Reposition the drain pan over the strainer drain hole blue arrow. If anything, the Corolla is easier to change the tranny fluid than the Hondas, but mainly because I don't have to fish in the back of the engine bay for the fill plug on the Toyota like I do on the Hondas. My magnets and pan were pretty clean. We have 1,071 reviews on our Automatic Transmission Fluid products for the 2009 Toyota Corolla from previous customers.