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2012 Ford Fusion SEL 2.5L
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I have a 2012 Ford Fusion SEL 2.5L. I just bought it 2 weeks ago, change the transmission fluid following YouTube videos and also the spark plugs.

  • First question: When checking the trans fluid the lever mark is different depending on which way you insert the dipstick in. The fluid is at different levels on both sides of the dipstick. If I insert it one way it shows between the fill range and the back of the stick the fluid is higher. If I turn it 90 degrees and check it shows on the Full line and lower on the backside. I decided to go with the side that shows full since I put 5 quarts and I don't want to overfill the transmission. Even on the nonfull measure... it is still close to full and in the fill area.

105504


  • Question two: The transmission seems to have recorded driving habits from previous owners and the transmission has a light delay shifting. I have an ELM327 WiFi OBD2 that I can use with Forscan. The ELM327 v1.5 does not have the switch/toggle option for high or medium programming. Can I clear the adaptive driving safely with my OBD2 reader? or Do I need the one with the switch/toggle? I don't know if that programming option requires the high or the medium options.
 

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2012 Ford Fusion SEL 2.5L
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I was able to reset or clear the Adaptive Transmission Tables. Ran the car and it seems to be running better. So the answer to my second question is yes you can clear the Adaptive Transmission Tables with Forscan and a WiFi OBD2 Reader ELM327. I am researching on how to update the software/firmware of the TCM. For the first question, I used the OBD2 reader to read the transmission fluid temp and was able to get it to 185 degrees and the reading on the dipstick was full and not overfilled. The manual says to get an accurate reading the fluid temp has to be between 185-200 degrees. I did notice the dipstick was bent and may have caused a misreading.



Got those two questions resolved. Now I have to check the rearview mirror because it's making a raddled and find out if the TCM has the latest software and if I should look into updating the software.
 

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· Registered
2012 Ford Fusion SEL 2.5L
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27 Posts
Discussion Starter · #3 ·
Just wanted to mention that after clearing the Adaptive Transmission Tables.... The car no longer has the delay in shifting and is shifting is smooth. If anyone has recently bought a used Ford vehicle with these type of transmission and are having shifting issues.... Clear the Adaptive Transmission Tables, because it could be that. The transmission has learned the previous owner driving habits. I would clear the Adaptive Transmission Tables anyways when buying a used Ford vehicle, just to have a fresh start of the transmission learning the new driving habits.
 

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Do the 2009 fusions also have this adaptive nonsense cause I always felt this car wanted to shift better at certain rpms
Hi Chitty. Earlier first generation Fusions had an earlier form of adaptive transmission programming. It will adapt for transmission wear over time, but not for driving style etc.

Good luck.
 

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Danny, thanks for the write up. I'm going to try this over the weekend when I'm visiting my father who has an OBD2 reader.

Quick question, is the car still running great after a few weeks?

And if I want to do the reset via OBD, does it need to use Forscan? Or can I use one that checks for engine codes, like this: https://www.amazon.com/thinkcar-20-Functions-Automotive-Diagnostic/dp/B08FBRY2MV ?
 

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2012 Ford Fusion SEL 2.5L
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Discussion Starter · #9 · (Edited)
Danny, thanks for the write up. I'm going to try this over the weekend when I'm visiting my father who has an OBD2 reader.

Quick question, is the car still running great after a few weeks?

And if I want to do the reset via OBD, does it need to use Forscan? Or can I use one that checks for engine codes, like this: https://www.amazon.com/thinkcar-20-Functions-Automotive-Diagnostic/dp/B08FBRY2MV ?
It seems to have come back. I read in another forum that using a specific transmission fluid works. Some say in that forum you can use the motorcraft Mercon LV in combination with an additive and it also works. I am going to wait till I get at least 15,000 miles on this new fluid to try the fluid that was recommended in that forum. I'll post the link here so that you can get a b etter explanation. The fluid is called Red Line D6 fluid.

 

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2012 Ford Fusion SEL 2.5L
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Discussion Starter · #12 ·
Hi , did you clear the adaptive transmission table while the car is powered on and engine off or while engine was in idle? And also did you find a way how to update TCM?
THANKS..
While the engine off. The only way to update the TCM is either at the dealership or buying an expensive tool. I am still waiting to get some miles on the recent transmission fluid change and will try the replacement that another forum suggested.
 

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2012 Ford Fusion SEL 2.5L
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Discussion Starter · #13 ·
Anyone here had a settle whining sound coming from what I think is the transmission? It is louder when running cold and gets less notisible as the engine and transmission reach operating temperatures. To really hear it, you have to roll down the windows. There are no shifting or transmission performance issues, so I assume is a normal low whining sound. I have to check also, because it could be coming from the engine. I saw a youtube video of someone having a siminlar whining sound and it was coming from the alternator. I cannot tell if its normal, since I bought the car used on 01/2021 and I did a transmission oil change myself not too far from when I bought it. I used Mecron LV. Anyone who has had the car from close to new condition let me know if its a normal sound?
 
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