weird upshift behavior?
Thread Starter
Junior Member
Joined: Mar 2021
Posts: 53
Likes: 9
2014 E63 RWD
weird upshift behavior?
tell me if this is something you car does.
driving at steady commuting speed, pressing the accel pedal enough to maintain that speed. you want to switch lanes and go a little faster. so you press the pedal a bit more. ( small amount more, we are not racing traffic )
the transmission instead of holding the gear, upshifts. like.. why?
is this normal behavior?
driving at steady commuting speed, pressing the accel pedal enough to maintain that speed. you want to switch lanes and go a little faster. so you press the pedal a bit more. ( small amount more, we are not racing traffic )
the transmission instead of holding the gear, upshifts. like.. why?
is this normal behavior?
Out Of Control!!
Joined: Jun 2004
Posts: 13,799
Likes: 3,229
2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
tell me if this is something you car does.
driving at steady commuting speed, pressing the accel pedal enough to maintain that speed. you want to switch lanes and go a little faster. so you press the pedal a bit more. ( small amount more, we are not racing traffic )
the transmission instead of holding the gear, upshifts. like.. why?
is this normal behavior?
driving at steady commuting speed, pressing the accel pedal enough to maintain that speed. you want to switch lanes and go a little faster. so you press the pedal a bit more. ( small amount more, we are not racing traffic )
the transmission instead of holding the gear, upshifts. like.. why?
is this normal behavior?
reset your tcu and let it re learn your driving pattern again
sounds like it's just ready to upshift to optimize fuel, I'm pretty sure this only happens in comfort in my car
Thread Starter
Junior Member
Joined: Mar 2021
Posts: 53
Likes: 9
2014 E63 RWD
okay, true, will reset tcu when I get home and see what happens tomorrow. I guess I will have to wait a few days for the learning to complete.
tcu learning is for all modes I suppose, there is no learning in each mode? that would be like too cool.
Problem is that my commute involves some bumper traffic on the return.. you cant learn to be "sporty" like that.
Thread Starter
Junior Member
Joined: Mar 2021
Posts: 53
Likes: 9
2014 E63 RWD
but that is because you are a man! ... I am a 80 year old trapped in the body of a 40 year old.
yet.. in bumper to bumper traffic in S or S+ it upshifts to 2nd just about when I have to brake again.. so I just rather C and have it at 2nd all the time.
yet.. in bumper to bumper traffic in S or S+ it upshifts to 2nd just about when I have to brake again.. so I just rather C and have it at 2nd all the time.
Super Member
Joined: Oct 2020
Posts: 662
Likes: 279
From: ILLINOIS
2014 E63S
I have a ec tcu tune and mine in comfort mode holds gears up hill or when trying to accelerate. I also drive it hard in comfort when I'm having fun alone lol.. I too sit in traffic for about 25miles a day
Super Member
Joined: Nov 2011
Posts: 593
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From: SomewherebetweenDCandFL
On the shoulder
Is it possible to reset the transmission learning without erasing the TCU tune?
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2014 E63 RWD
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