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Driving along at 70 mph and I take my foot off the gas, to slow down, the gas engine stops running (tach goes to zero) and the electric motor is running the car. Hit the brakes to slow further and then hit the accelerator and there is a jerk as though it is shifting.. All okay, but why would it shut down the gas engine at such a high speed? I know, it must be a software glitch, hoping it will get fixed.

Anyone know how to report these glitches to Infiniti?

jac
 

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I'm pretty sure it's not a glitch but a feature to save gas. From what I understand, from just what other's have posted on the forum, is you can go into EV mode up to 85 mph as long as there is no incline and no acceleration on your part. It doesn't seem odd that your car would go into EV mode if you let off the gas, especially if you were in ECO mode(not sure if you were or not). I can't remember who it was that tested it but there is a video of it on the forum somewhere.
 

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I believe the video mentioned is from Q50Aggie!
 

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Yes this is definitely not a bug. And you are exaggerating the "jerk" that happens when the gas engine comes back on. Its almost unnoticeable.
 

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As they say in computer biz, that's a feature, not a bug. I often demonstrate that capability during test drives.


Sent from AutoGuide.com Free App
 

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Ditto all the other posters... my car often cycles between EV mode at high rates of speed. The re-fire of the gas engine is almost imperceptible.

On a slightly related note, has anyone have the engine suddenly fire when at a standstill? My car has re-fired the engine on a few occasions but the shudder is very noticeable. Anyone else have the same experience?
 

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That's because the hybrid battery got no more charge. The gas engine have to kick in.

On a slightly related note, has anyone have the engine suddenly fire when at a standstill? My car has re-fired the engine on a few occasions but the shudder is very noticeable. Anyone else have the same experience?
 

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That's because the hybrid battery got no more charge. The gas engine have to kick in.
I thought the same thing, but when it did it this morning I'd just exited the freeway, 'creeped' down the exit ramp and still had more than 50% battery. The reason it stood out this morning is that it was so abrupt that it startled me out of the quiet I've grown accustom to at stoplights. I'll keep an eye on whether the battery is low next time.
 

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The reason the engine starting (from a dead stop stop) feels "abrupt" is because there is no speed momentum behind you to help it start. So ANY engine starting feels this way, think of what it feels like to start a traditional car...crank crank crank crank catch. I would imagine that the hybrid starts smoother in this case than a traditional gas engine (perhaps the electric motor restarts the engine vs. a traditional crank starter). In any event, limiting use of the AC compressor and other high drain accessories (rear defogger, seat heaters, etc) will limit the need for the engine to start at a red light to compensate for a battery being drained by accessories.
 

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The reason the engine starting (from a dead stop stop) feels "abrupt" is because there is no speed momentum behind you to help it start. So ANY engine starting feels this way, think of what it feels like to start a traditional car...crank crank crank crank catch. I would imagine that the hybrid starts smoother in this case than a traditional gas engine (perhaps the electric motor restarts the engine vs. a traditional crank starter). In any event, limiting use of the AC compressor and other high drain accessories (rear defogger, seat heaters, etc) will limit the need for the engine to start at a red light to compensate for a battery being drained by accessories.
That is great info Mike! I'm pretty sure the AC was running this morning (and other times) because it was very humid.
 
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