Jma1083 Posted April 1, 2018 Report Share Posted April 1, 2018 I have a 2008 Ford Edge AWD. My battery died last night, so I went out today and picked one up and installed it. Now my transmission is shifting very hard, it almost feels like it's slipping. It's the worst from 2-3, 3-4, 4-5. Never had any problem with it until I changed the battery. Has any one else had this issue? Is there a time relearning period after a battery disconnect? Appreciate any help. Quote Link to comment Share on other sites More sharing options...
Brucifer Posted April 2, 2018 Report Share Posted April 2, 2018 I would think it's the relearning process. I grounded out my battery to reset everything once and my normally bad shifting was even worse for a time. Can't say how long it will take, but it should smooth out. 1 Quote Link to comment Share on other sites More sharing options...
Jma1083 Posted April 2, 2018 Author Report Share Posted April 2, 2018 I would think it's the relearning process. I grounded out my battery to reset everything once and my normally bad shifting was even worse for a time. Can't say how long it will take, but it should smooth out. Thanks. That's what I'm hoping, had me worried though. Surprisingly, never had a problem with shifting before, and it feels like the tranny was about to fall out when it shifts now lol. Quote Link to comment Share on other sites More sharing options...
chefduane Posted April 2, 2018 Report Share Posted April 2, 2018 Same thing happened to me when I replaced my battery. First thing was the selective system shutdown (that can be confusing if you've never experienced it) and then the battery died completely. After I replaced the battery the system had to re-learn my driving pattern (accell/decell) to reset the shift points. Took a while driving around town but it should smooth out after a while. Quote Link to comment Share on other sites More sharing options...
akirby Posted April 2, 2018 Report Share Posted April 2, 2018 Here we go again. The tranny doesn’t learn your driving style. It relearns shift pressure to keep the shifts within factory spec. This is to account for wear over time and for manufacturing tolerances. 1 Quote Link to comment Share on other sites More sharing options...
Jma1083 Posted April 2, 2018 Author Report Share Posted April 2, 2018 That's what I was hoping since it didn't start until I replaced the battery, it just had me kind of worried because it was pretty rough. Got in it this morning, and it seems to be back to normal. Quote Link to comment Share on other sites More sharing options...
chefduane Posted April 2, 2018 Report Share Posted April 2, 2018 Shift pattern/driving style/shift pressure, whatever.... it shifts different after a new battery installation but will relearn the shift (insert favorite word here) and will smooth out relatively soon. Better? Quote Link to comment Share on other sites More sharing options...
akirby Posted April 2, 2018 Report Share Posted April 2, 2018 Shift pattern/driving style/shift pressure, whatever.... it shifts different after a new battery installation but will relearn the shift (insert favorite word here) and will smooth out relatively soon. Better? Much. Some people think it will change if you change drivers - that’s the part that people get confused about. 1 Quote Link to comment Share on other sites More sharing options...
chefduane Posted April 3, 2018 Report Share Posted April 3, 2018 Now THAT would be a great trick!! Quote Link to comment Share on other sites More sharing options...
DjfunkmasterG Posted January 30, 2021 Report Share Posted January 30, 2021 Does this apply to the Lincoln MKX as well? I have an 08 MKX AWD Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted January 30, 2021 Report Share Posted January 30, 2021 yes they are siblings/twins. Quote Link to comment Share on other sites More sharing options...
DjfunkmasterG Posted January 30, 2021 Report Share Posted January 30, 2021 Thanks dude, I literally changed my battery this morning, took it for a ride and it started this slipping as describe by everyone else and I was like WTF... So I jumped on google, did the search and it led me here. Thanks for replying so quickly -Dj Quote Link to comment Share on other sites More sharing options...
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