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The idle start stop system on my 2024 Honda Odyssey sometimes works, and then other times will leave me stranded at a stoplight, making it a grave safety concern. After the engine does not restart you have to turn the car completely off put it in park turn it all the way back on and then continue driving. This is not related to any of the climate controls being onto high or energy being consumed. It seems to be a manufacturing defect.

HONDA ODYSSEY 2024 ENGINE

completely shuts off during an idle stop at a traffic light

My 2024 Honda Odyssey has repeatedly failed to restart after the Auto Idle Stop system shuts the engine off at a red light. When I release the brake or press the accelerator, the engine does not restart as it should. The vehicle then shifts into Park or instructs me to place it in Park, and it is difficult to restart using the start button. This has left the vehicle disabled in an active traffic lane and creates a serious risk of being struck by another vehicle. I have been stuck at a red light with people honking at me and haven't been able to start the car for up to a minute. The problem is intermittent, and I do not know whether it is caused by the engine, electrical system, battery, starter, software, or power train. The Auto Idle Stop system should not shut the engine off if the vehicle may be unable to restart.

HONDA ODYSSEY 2024 POWER TRAIN

The Start/Stop function on the Honda Odyssey failed to re-start the vehicle after it was stopped at a traffic signal. The vehicle gave no advance notice of the issue. The vehicle defaulted the transmission into the "Park" position, however the electronics (radio, windows, etc.) all operated as normal. Simply pushing the ignition "On/Off" would do nothing and would NOT turn off the electronics. I had to press and hold the "On/Off" ( similar to a Ctl+Alt+"Delete") to hard shut off the vehicle entirely. I then had to place the key fob physically on the "On/Off" button to restart the vehicle.  This is a significant safety concern being at a dead stop at a stoplight that may be green. We have had our van to the Honda dealer twice now within 3 weeks for the same issue. They cannot get it to duplicate any issues. The original diagnosis was that we had a loose ground connection at the battery. The battery, alternator, and starter were all diagnosed as in perfect working order. The tech tightened the loose ground, but the issue has not been resolved.  There were zero warnings that there was an issue with the start/stop function.

HONDA ODYSSEY 2024 ELECTRICAL SYSTEM

The vehicle failed to re-start after being engine had been at full operating temperature then was turned off for a short period of time.  It has also struggled to re-start with auto start/stop leaving the vehicle partially in a busy intersection without any engine power until it successfully turned over several seconds after releasing the brake pedal.  The dealer is unable to replicate.  They have tested the starter and battery and confirmed both test good at ambient temperatures.  No warning lamps.  Once the vehicle cools, it is able to re-start again.

2024 Honda Odyssey — vehicle data sourced from FuelEconomy.gov.

Le Honda Odyssey 2024 est un minivan spacieux et sécuritaire, conçu pour les familles avec ses 5 portes et sa transmission intégrale. Il offre une puissance respectable de 280 chevaux pour des trajets quotidiens efficaces.

	1995	1996	1997	1998	1999	2000	2024
Prix	—	—	—	—	—	—	$38,240–$51,230
Cylindrée	2.2L	2.2L	2.2L	2.3L	3.5L	3.5L	3.5 L
Type de carburant	Essence ordinaire	Essence ordinaire	Essence ordinaire	Essence ordinaire	Essence ordinaire	Essence ordinaire	Regular
Transmission	Automatique 4 vitesses	Automatique 4 vitesses	Automatique 4 vitesses	Automatique 4 vitesses	Automatique 4 vitesses	Automatique 4 vitesses	10 speed automatic
Type de carrosserie	Break intermédiaires-grandes	Break intermédiaires-grandes	Break intermédiaires-grandes	Break intermédiaires	Monospace - 2RM	Monospace - 2RM	Minivan

Honda Odyssey (2024) Spécifications