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I have a 2015 Tundra 5.7 with the 6 speed automatic transmission. I have 55K miles on it. I cannot find in the owner's manual any mileage interval for automatic transmission service. My understanding is that it is a "sealed" transmission. Does that mean it doesn't require servicing? I tow an RV with it, maybe once a month, for maybe 150 miles give or take. I'm not really wanting to fool with it myself, and I'm willing to take it to the dealer for servicing, but I'd like to see something from Toyota that specifies the interval. I'm sure the dealer would be happy to take my money.
 

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Being that you tow an RV, I would at the very least do a spill and fill of the fluid every 30,000. The dealer is likely going to want to hook a machine to it to do the service which is a no no. Most manufacturers warn against flushing transmissions with a machine as it puts pressures on parts of the transmission that shouldn't be pressurized. I like to refer to them as a wallet flushes because the dealers can put a low experience tech (problem #1), using a pressure machine (problem#2), dumping who knows what kind of fluid (problem #3) into your expensive transmission. I always like to know that I am putting Toyota WS (or Aisin WS that you can get from Rock Auto, Aisin being the manufacturer of the transmission) fluid back into my transmission. Remember the dealership is in the business of selling new cars and they want the maintenance costs to be as low as possible to promote a low cost of ownership. Changing your fluid is prevention of earlier failure and if you want to keep your truck for a long time, it's something you definitely want to do. There are videos on YouTube that show you how to change your fluid without using live data from a scanner by putting the truck into a check fluid level mode. I'll try to find one for you and post it up.

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In my opinion, a Tundra transmission service is a DEALER ONLY job unless you are a fully equipped shop.

DO NOT FLUSH! DO NOT LET SOME YAHOO TALK YOU INTO FLUSHING!

The filter is lifetime. Do not replace.

You only need to drain and fill. However, to do this properly, the transmission has to be at specific temperatures. Not operating temp, and not cold. I do not know the specifics but your dealer does. If you drain it cold, asI understand, you only get about ⅓ of the fluid out. Not sure why?!

Every other service can easily be done in your driveway but the trans is a headache to do it right, my dealer charged $192 for the fluid change and it was money well spent IMO.
 

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I have done this service with no issues. I have done my 2014 Rav 4, 2014 sienna and my 2008 Tundra. As long as you follow procedure, this service can be done by a knowledgeable do it yourselfer.

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True. But "knowledgable" is the key word and I am guessing 95% of the people on here don't have the proper tools to accurate read transmission temps, let alone the knowledge.

For me, it was well worth paying a little extra to be sure it was done right.

I just did valve cover gaskets, spark plugs, water pump, pulleys, etc. and saved probably $1000 over the stealership but those tasks just take time to do right.
 

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True. But "knowledgable" is the key word and I am guessing 95% of the people on here don't have the proper tools to accurate read transmission temps, let alone the knowledge.

For me, it was well worth paying a little extra to be sure it was done right.

I just did valve cover gaskets, spark plugs, water pump, pulleys, etc. and saved probably $1000 over the stealership but those tasks just take time to do right.
You do need a scan tool for the Rav and sienna, but the tundra has a mode you can put it in (required to get an accurate level of fluid) that you do not need to use a scan tool. You just have to make sure if you have a trans cooler to make sure that you have it pinned open. Easy peasy.

Sent from my moto z4 using Tapatalk
 
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