2018 Honda Odyssey: start-stop system problems

Filed Apr 17, 2024 · Engine · SC

Car stalls out and completely shuts off when auto start/stop is engaged. In the 2018 model there is no way to turn off auto start/stop. The car has been unable to turn on for 3 minutes causing major safety and traffic issues. On average it takes 10-20 seconds to manually restart the vehicle with the engine start/stop button. We have taken the vehicle back to the Honda dealership multiple (3-4) times with no resolution and in they can’t find the problem, but has happened to them during test drive. They did a system update hoping it will solve the problem, but it hasn’t. I’m going to have to take it back to Honda again. Please issue a recall, this has been a known problem/issue and is on Reddit. The issue first started about a year and a half ago with the most recent occurrence being today, April 17th 2024. The vehicle has failed to turn back on after the auto start/stop engaged over 20 times.

Filed Oct 2, 2023 · Electrical, Engine · IL

This vehicle has had numerous electrical issues, culminating in the need for three batteries in a six year. Period. From day one there were electrical issues with the auto stop start and the car in one occasion the battery completely died. Honda was unable to identify the issue and electrical issues. Continue to happen. in the last 18 months I’ve had numerous occasions where this auto stop start would engage at a stoplight stop sign in the middle of busy traffic, but would not start back up. I took it in for service and they cannot re-create or identify the issue. This is very scary when it happens as I have been on start and go traffic on the interstate on busy intersections and the car will not move nor can it be restarted for 5 to 10 minutes. Honda offers no solution to this dangerous problem. After months of not being able to fix this. Identify a problem the car no longer moves into reverse consistently Honda recommends new transmission. After becoming frustrated with Honda and feeling unsafe with my family in this vehicle, I had to trade it in for a new vehicle as no solutions were offered to make me feel safe driving it or to get it repaired effectively or identify why it keeps needing new batteries and has electrical dysfunction since purchase

Filed Sep 2, 2023 · Electrical, Engine · TX

When the vehicle’s auto start-stop feature is active, the feature will malfunction causing the engine to not start properly. Instead, the vehicle stalls and must be restarted manually. However, there are many occasions when the vehicle does not start manually either. In these cases, it takes many attempts to restart the vehicle. While these events are happening, the vehicle displays an error message for the auto start-stop feature on the instrument cluster, and the instrument cluster will flicker on and off. The events often occur during the middle of an intersection and attempting to turn in front of oncoming traffic. It creates a very dangerous situation. the vehicle or component has not been inspected by the manufacturer, police, insurance representatives or others because the issue occurs regularly, and the dealership has asked us to come back when the problem is occurring. The problem has not been reproduced or confirmed by a dealer or independent service center. However, there are other Honda vehicles (e.g., Honda Pilot) which have the exact same issue, and a recall has been issued for those vehicles but not the Honda Odyssey.

Filed May 17, 2023 · TX

I was driving the vehicle as normal and stopped at a Red Traffic Light. I attempted to drive when the light changed to green. The car stuttered, the dashboard lights flashed and the car shut down. - Multiple attempts to re-start failed. No prior warning lights etc. Car just return from Dealer to address Recall Issues etc. Dealer made comments on Brake Maintenance etc which was then serviced. No Mention of Auto Stop/Start issues. - FULL failure: No brake, no steering, no radio, dashboard went blank. No lights. - FAILURE OF HAZARD LIGHTS TO WORK. - This is a SHUT down in the middle of a busy street with 2 kids in the car. NO Hazard lights working. - Mulitple near accidents from incoming traffic. No lights working??? -Spoke to mechanic over the phone. He thought it was NOT likely the battery and I needed to get a tow truck. -Tow truck not available for several hours. - Mechanic was able to send someone to me. He worked on it and eventually got it to start. - Immediately took it to the Mechanic Shop. They Tested the Battery, alternator, starter and connections. Stated No Problem detected. - Mechanic thought it could be related to the computer/Auto Stop/Start system and suggested I get it checked at the Dealership. -Spoke to the Dealership the following day and base on the description of events they also mention the Auto Stop/Start system???? -This seems to be a problem they are aware of but????? The Dealership recognize this problem base on the conversation???? It is thus well known???? - Car left at Dealership - This is EXTEMELY DANGEROUS. The car Shuts Down/Freezes in the middle of Traffic. - NO HAZARD LIGHTS WORKING?????? - This is an Accident/Deaths waiting to happen. - Why is the computer even controlling the HAZARD lights. That is a HORRENDOUS Design Error. Hazard Lights should be HARD WIRED to switch.

Filed Apr 24, 2021 · Driver assistance, Engine · 46,400 miles · SC

Our 2018 honda odyssey elite has intermittent issues with the auto start/stop feature. As context, the car engine will automatically stop when the vehicle is fully stopped, for example at a red light, and a few other conditions are met (brake pedal pressure, battery charge, electrical load). Our vehicle when auto stopped may stall when attempting to resume driving. When the driver releases the brake pedal and pushes the accelerator pedal, the car fails to auto start, or auto starts with warning messages. When the car fails to start, a variety of warning messages will be displayed on the dashboard. Remediation varies. The car may respond to shifting to park and pushing the ignition start/stop button twice. At times, the car may not respond to shifting to park and ignition button actions. The only fix then seems to be a 'hard' shutoff that requires opening the driver door and pushing the ignition button, closing the door, pushing the ignition button, and shifting to drive. When the system partially fails, the front collision warning/mitigation system is temporarily disabled. My car is current on all recalls. I recently had dealer service, and they confirmed there are no known bulletins for this issue. The car is current on maintenance schedule and is otherwise in very good operation condition. This situation car be quite stressful when at a busy intersection, or when trying to pull out to merge into a major road from a stop. This failure could be very dangerous if you needed to move the vehicle quickly, for example if stopped near a railroad crossing. The auto start/stop system is enabled by default to improve fuel economy. It can be manually disabled, however it resets with each shutoff. I would permanently disable it, however, that is not possible apparently for epa reasons. I have videos showing this behavior.

Filed Feb 12, 2020 · 27,157 miles · UT

When I stop curbside for school carpooling (I have 5 children at 3 different schools) to allow passengers to exit the passenger side sliding door, I then cannot get it to close. The door will slide all the way to within 1 inch of closing and pop back open. Repeatedly. Driving with the sliding door ajar is not safe. I have been able to use the driver's side buttons to stop the door, and start it closing again. If I do this stop/start action repeatedly (not allowing the door to slide all the way back open) I can almost always get the timing right to get it to close...but often it takes 3-5 minutes to get the stop/start combination to close the door entirely. I am usually unable to remain in the carpool pull throughs that long so I seat my baby on the drivers side so when we pull away with the door ajar, there is less of a safety concern until I am able to pull to another spot and deal with the door. It is very frustrating and even more so, unsafe!