lx700h dead problem

lx700h · Monday at 5:16 AM

I was waiting for the red light in my Lexus LX700h with the brake on. There was a car in front of me and I didn't have the automatic start-stop or automatic parking engaged. When the green light came on, the car in front had already moved about ten meters. I stepped on the accelerator but found that the car wouldn't move. I released the accelerator and stepped on it harder. After a few seconds, the car started moving, and it shot forward all of a sudden. What's the reason for this? It has happened three times already.

ShottsCruisers · Monday at 11:39 AM

12k miles...not happeded to us yet.

garyculb18 · Monday at 4:26 PM

If you were in Econ or Comfort then, the Start/Stop feature may have been engaged (https://www.exclusivelyhybrid.com/h...yNr4J5wg4iPQ4gw98Rv4RSzjxLGKKEhrOMOVN5ObbyzOY, )??

This feature on the Lexus 700h is removed/absent in the mode settings Regular, S & S+.

Best,
Doc

ShottsCruisers · Tuesday at 11:56 AM

garyculb18 said:
If you were in Econ or Comfort then, the Start/Stop feature may have been engaged (https://www.exclusivelyhybrid.com/h...yNr4J5wg4iPQ4gw98Rv4RSzjxLGKKEhrOMOVN5ObbyzOY, )?? This feature on the Lexus 700h is removed/absent in the mode settings Regular, S & S+.

Best,
Doc

What feature is removed in S and S+ mode Doc?

garyculb18 · Tuesday at 5:06 PM

Start-stop system - Wikipedia

en.wikipedia.org

This switch system on the 700h is rider mode dependent. It is on in Econ & Comfort/Off in Regular, S & S+

A second feature that may explain what happened to the OP is the Lexus Smart Stop Technology Feature:

Best,

Doc

henke · Tuesday at 6:12 PM

garyculb18 said:
Start-stop system - Wikipedia

en.wikipedia.org

This switch system on the 700h is rider mode dependent. It is on in Econ & Comfort/Off in Regular, S & S+

A second feature that may explain what happened to the OP is the Lexus Smart Stop Technology Feature:

Best,

Doc

Really? I've been in sport S+ and had the engine sitting at 0 rpm...

ShottsCruisers · 2026-01-28T11:23:27-0600

garyculb18 said:
Start-stop system - Wikipedia

en.wikipedia.org

This switch system on the 700h is rider mode dependent. It is on in Econ & Comfort/Off in Regular, S & S+

A second feature that may explain what happened to the OP is the Lexus Smart Stop Technology Feature:

Best,

Doc

Sorry Doc. Not the case. There is no way to override the engine dropping out while driving. We do not have a On/Off Mode like non-hybrids. S and S+...engine is off at a red light and going downhill, etc.