Gear vs Speed
Lexus Champion
Joined: Sep 2016
Posts: 2,047
Likes: 135
From: AB
In regard to learn mode my wife complained it drives not like her old car. After I put the car in learn mode she noticed and said it drives better.
Pole Position
Joined: Apr 2018
Posts: 2,626
Likes: 459
From: GA
Wait why did you start a thread if you were going to just reject what everyone said because you think they are pretending to be experts that makes no sense to me.
Intermediate
Joined: Feb 2016
Posts: 489
Likes: 22
From: CA
Thread Starter
Intermediate
Joined: Jun 2018
Posts: 266
Likes: 49
From: CA
Woah there, the armchair comment was in reference to @arentz07 "But yeah that could be "conventional" wisdom at best" post. NOT devaluing this thread or its advice. Def taken out of context. It was ONLY in reference to certain "conventional" wisdom things, (like ecu mappings, break in procedures) where there is a lot of opinions but its a complicated matter best left to experts.
Next time I'll use quotes function for that, sorry
Next time I'll use quotes function for that, sorry
Moderator
Joined: Nov 2016
Posts: 9,612
Likes: 4,801
From: GA
All I meant to say was that sometimes I forget that a lot of the advice I hear about cars is based on outdated opinions. Now that I re-read the conversation, I think you understood that. However, when I read your comment I perceived it as calling the above posters armchair experts, rather than the people I was referring to with the conventional wisdom. So my bad, I overreacted/misunderstood a bit.
Pole Position
Joined: Apr 2018
Posts: 2,626
Likes: 459
From: GA
Woah there, the armchair comment was in reference to @arentz07 "But yeah that could be "conventional" wisdom at best" post. NOT devaluing this thread or its advice. Def taken out of context. It was ONLY in reference to certain "conventional" wisdom things, (like ecu mappings, break in procedures) where there is a lot of opinions but its a complicated matter best left to experts.
Next time I'll use quotes function for that, sorry
Next time I'll use quotes function for that, sorry
Lexus Champion
Joined: Sep 2016
Posts: 2,047
Likes: 135
From: AB
To clarify, I meant minimum speed for each gear. When I had an FRS, I think the owners manual listed this. The overlap has been what I have been paying attention to when in the gear view on the speedo screen. I've been surprised when I'm only at 17 mph and already in 4th gear in auto mode.
Lexus Champion
Joined: Sep 2016
Posts: 2,047
Likes: 135
From: AB
To clarify, I meant minimum speed for each gear. When I had an FRS, I think the owners manual listed this. The overlap has been what I have been paying attention to when in the gear view on the speedo screen. I've been surprised when I'm only at 17 mph and already in 4th gear in auto mode.
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Lexus Champion
Joined: Sep 2016
Posts: 2,047
Likes: 135
From: AB
TCU is controlling tranny communicating with ECU, that's what I understand. Actually putting TCU to learn mode takes few seconds then TCU and ECU
communicate which takes few minutes. That's all. There are some Youtube tutorials about this.
Moderator
Joined: Nov 2016
Posts: 9,612
Likes: 4,801
From: GA
Disconnect battery to do it on Lexus? On MB it takes a few minutes sitting in the driver's seat with ignition in run mode. You can do it any time you want.
TCU is controlling tranny communicating with ECU, that's what I understand. Actually putting TCU to learn mode takes few seconds then TCU and ECU
communicate which takes few minutes. That's all. There are some Youtube tutorials about this.
TCU is controlling tranny communicating with ECU, that's what I understand. Actually putting TCU to learn mode takes few seconds then TCU and ECU
communicate which takes few minutes. That's all. There are some Youtube tutorials about this.
Lexus Champion
Joined: Sep 2016
Posts: 2,047
Likes: 135
From: AB
Thread Starter
Intermediate
Joined: Jun 2018
Posts: 266
Likes: 49
From: CA
The FRS I had before my Lexus had a shift light/beep you could set. I do miss that. My understanding is most new cars are continuing to vary setting with the ECU depending on many factors. Such is the sophistication of modern engine computers.
Moderator
Joined: Nov 2016
Posts: 9,612
Likes: 4,801
From: GA
Well, the IS does have the Rev Indicator setting, which turns the tach red. You could use that as a makeshift shift light, but it'd be fixed of course. 
Basically if you are trying to be efficient it's probably best to let the auto do its thing.
Basically if you are trying to be efficient it's probably best to let the auto do its thing.
Thread Starter
Intermediate
Joined: Jun 2018
Posts: 266
Likes: 49
From: CA
^ Pretty much what I'm doing. It's more important when downshifting to know gear will be available to somewhat anticipate versus reacting when, oh theres a beep, I can't go down anymore.