Shift Tranny into "N" at long lights? - Toyota RAV4 Forums
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post #1 of 6 (permalink) Old 04-18-2019, 07:14 PM Thread Starter
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Shift Tranny into "N" at long lights?

Do you think it's wise or foolish to shift the Tranny into Neutral at long lights when you know it will take 4-5 minutes to go green?

I got in the habit of doing that with my '01 Tundra and find myself wanting to do it with the all gas Rav4.
Thanks for any replies, Brad
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post #2 of 6 (permalink) Old 04-18-2019, 07:23 PM
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Since I started driving a hybrid with Autostop a number of years ago I've gotten into the habit of shutting the engine off with my other cars & trucks at the local lights I know are going to take more than 30 seconds or so. And, since I know the light's sequence, I can have the engine restarted and in Drive just in time for the green.

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post #3 of 6 (permalink) Old 04-18-2019, 08:18 PM
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Quote:
Originally Posted by Dr. Dyno View Post
Since I started driving a hybrid with Autostop a number of years ago I've gotten into the habit of shutting the engine off with my other cars & trucks at the local lights I know are going to take more than 30 seconds or so. And, since I know the light's sequence, I can have the engine restarted and in Drive just in time for the green.

wouldn't shutting / restarting engine at lights on an ICE car wear out starter/battery/etc prematurely?


OP:is merely asking about switching AT to N leaving engine running and I think it would be OK and even save him some gas as the engine wouldn't have to fight torque converter. I'm not doing that as I'm too lazy .

2011 RAV4 V6 Limited
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post #4 of 6 (permalink) Old 04-19-2019, 08:43 AM
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I guess the answer depends on the owner’s level of comfort with tolerating a little more heat and fuel used (in a condition for which the transmission was designed and rigorously tested) vs additional wear on the shifter mechanism, along with the servo and other internal parts of the transmission. Keep in mind, if an internal fault happens it’s right away an $800 minimum charge for removal and reinstalling the transmission. Likely approaching $3500 because “while it’s out of the vehicle...”

While I understand where the thought comes from, to balance out the cost of a starter from restarts or a transmission job due to early wear on internal parts, my own calculations come to letting it idle in drive in my day to day driving. Having said that, a 5-minute red light sounds like a colossal pain in the —-. If you’re concerned about fuel usage, it’s not even pennies worth of difference for that timeframe. If you’re concerned about transmission fluid temps, get an external cooler. If you already have the tow-prep on your V6 or an adventure model, let it be. Keep in mind, YMMV.

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post #5 of 6 (permalink) Old 04-19-2019, 09:23 AM
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This guy's take on it, skip to 7:15 for the discussion.
Spoiler, no real benefit to put it in neutral.
Some awesome technical discussions on his video channel.
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post #6 of 6 (permalink) Old 04-19-2019, 11:16 AM
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Back in the day, you would shift to neutral as the two speed transmissions were really putting a strain on the engines at a stop. Also, if your car was getting hot in a traffic jam, you would shift to neutral to rev the engine a bit since the fans were connected to crankshaft and that would pull more air and cool the radiator. Those dates are long gone, stay in gear.
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