Going into Reverse by itself...

Why do you go into Neutral?

 

oh I do the same, but I press the park button.

I'm not sure why your car would go into reverse, has your car ever been in an accident?

 

check your 12 volt health.

 

Do you do this shift frequently? Just guessing you've worn something out. Sitting at a stop in Neutral, no foot on the brake, doesn't seem the best idea, no offense.

 

Doesn't the ICE stay on neutral? I thought it does. I shift to P at long lights or drive thrus.

 

I know of no reason to use Neutral instead of Park at lights, long or short, if the goal is simply to be able to take your foot off the brake. In fact, Park is actually safer because if someone should hit you from behind, Park will minimize the distance your car will move forward. If you use Neutral and someone hits you, it's a free-for-all and you'll be pushed into the car in front of you or, worse yet, into the intersection.

 

Well, if you are in Park and someone hits you hard enough to move the car very far the Park locking mechanism could be destroyed.

I don't recommend using Neutral except for special circumstances (pushing the vehicle in a shop for example, or at some car washes). When in Neutral the battery can't charge.
I use the foot brake with the car in "D". Once the brake pedal is pressed hard enough to trip the switch (brake lights) the car will shut off "simulated automatic creep". This will result in the most efficient mode to sit at a light.
If this is too tiring for you I guess I can't help.

 

put a digital volt meter on the jump point under the hood.

 

Don't use neutral except as noted for special circumstances. If it "really is shifting into reverse" as you say, I would start by looking at the electronic shifter first.

 

Neutral is great at an automatic car wash ,,,, but at a red light ?? Makes no sence to put in .N.
Or Park , keep it in D use the foot brake ,,

 

A reason to use N at traffic lights and not park is that you don't have to press the brake pedal to shift into D so it's quicker. A reason not to sit in D at traffic lights is so not to bother the guy behind you with your super bright brake lights. Ok, I know in America it is the norm to have an automatic gearbox so everyone does it, but IMHO it is annoying.

 

Different strokes, but habits can be changed.

 

With your foot-off-brake and neutral method, you must have to watch carefully to be certain the car isn't rolling, as well as shifting into N, then back to D. I don't understand how that routine is any easier than resting your foot on the brake for the duration of a red light. You don't have to press hard.

 

While I agree with what's said so far about just using your brakes as they were intended...

...back to your actual issue - when you pull the shifter down to the D position, are you letting it spring back naturally, or do you hold on to the shifter while it returns to the center position? Especially if you let it snap back as one might when shifting in a hurry as the light turns green, it's possible that the momentum from moving upwards from D carries it through the N region and into R, then back into N and over to the central position. The end result would be the car thinking you had shifted to D very briefly, then to R. If you are more deliberate with your handling of the shift knob, it might help.