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2019 White Diamond Pearl , AWD Sport
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I would certainly agree with you.
Would love to hear from someone w/ over 100K miles, lots of city driving, and how's their starter holding up.
 

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2020 Passport EX-L
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149 Posts
I've been noticing weak starts when using the idle stop feature for a month or so. Last weekend it wouldn't restart at a traffic light without completely powering down first and this was less than 24hrs after spending 3 hours on the interstate, so the battery should've been well charged. The vehicle is only 31months old with 32k miles, so I'm heading to the dealer tomorrow for a battery test and recall reflash.

Meanwhile I just replaced the battery on my wife's 2017 Sienna with 95k miles.
 

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Based upon my personal experiences across many different manufacturers as well as posts in enthusiast auto forums 3 years is the average an OEM factory battery will last. All cars have too many parasitic drains, and yes the auto start also wears on the battery.
I'll second this. I live in a desert climate which is very hard on batteries. While there are exceptions my various vehicle batteries are usually done at around 3 years, so much so I usually just replace them at about that time as regular maintenance to prevent getting stuck at a inopportune place and/or time.
 

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Mine is a '19 model and the battery still seems to be doing fine. I think in my case it's because after I start the engine, I immediately reach back and turn off the auto start/stop feature. It makes for less wear and tear on the battery, starter and engine.
 

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I've been noticing weak starts when using the idle stop feature for a month or so. Last weekend it wouldn't restart at a traffic light without completely powering down first and this was less than 24hrs after spending 3 hours on the interstate, so the battery should've been well charged. The vehicle is only 31months old with 32k miles, so I'm heading to the dealer tomorrow for a battery test and recall reflash.

Meanwhile I just replaced the battery on my wife's 2017 Sienna with 95k miles.
A few other people have reported a similar experience - They driver for several hours so battery should be well charged but their Passport still fails to start at a traffic light or after they parked the car for a few minutes.


 

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If you own a Passport that is within its 3y/36k miles bumper to bumper warranty, the battery is covered.

It will need to fail the dealers charge test to gain free replacement.

I just had our OEM battery replaced under warranty at 35k miles while at the 33 months mark. We were spared the $500+ expense (OEM battery + the re-flash labor), this time.

Get to your dealer under warranty or pay the piper. Just make sure you know that your OEM battery will fail the charge test (as I had confirmed by our dealers satellite service center through a 24 point maintenence inspection while getting a routine oil change).

Good luck out there.
 

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2020 Passport EX-L
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149 Posts
Had my ECU reflash (idle stop recall) and battery test today. The battery and charging system tested out OK so the dealer just did the reflash and sent me on my way. Probably a little early to be certain of the difference, but the idle stop system didn't engage even once on my 40 minute drive home. Every light or stop sign I came to, the display would read "Auto engine idle stop unavailable". I don't know if the update narrowed the parameters of operation for that system or what.
 

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Based upon my personal experiences across many different manufacturers as well as posts in enthusiast auto forums 3 years is the average an OEM factory battery will last. All cars have too many parasitic drains, and yes the auto start also wears on the battery.
If the battery is put on a maintainer regularly then 8-10 year life average can be achieved. The caveat to that is if you live in a extreme temperature swing environment.

Had my ECU reflash (idle stop recall) and battery test today.
Mine was done the other day and I did a pretty hairy trip (blizzards and sleet conditions) to NV and back almost 600 miles. Noticed no difference at all in the start/stop function compared to previous trips.

To be fair I don't turn it off on road trips. It stops and starts at every exit and in parking lot stop and goes. Around town I have no idea how it works as I hit the disable button at every startup.
 

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Based upon my personal experiences across many different manufacturers as well as posts in enthusiast auto forums 3 years is the average an OEM factory battery will last. All cars have too many parasitic drains, and yes the auto start also wears on the battery.
Agree that OEM batteries will last about 3 years, give or take. I noticed that the Honda dealer does sell 100 month warrantied Honda batteries. Has anyone purchased this 100 month Honda battery?
 

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2019 Honda Passport Elite Modern Steel Metallic
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32 Posts
Don’t use mine. Can’t stand the delay. I don’t worry about the minuscule gas saving benefits comparing to the extra wear and tear on the starter motor and the battery.
Don’t use mine. Can’t stand the delay. I don’t worry about the minuscule gas saving benefits comparing to the extra wear and tear on the starter motor and the battery.
I agree, Jason. There is no benefit to keeping the idle/stop feature enabled. Only the downside of wearing out expensive parts. Starting my Passport is a two step process. Hit the starter, and disable the idle stop. How much gas can it possibly save? 50 cents a month?
 

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I agree, Jason. There is no benefit to keeping the idle/stop feature enabled. Only the downside of wearing out expensive parts. Starting my Passport is a two step process. Hit the starter, and disable the idle stop. How much gas can it possibly save? 50 cents a month?
In heavy stop and go traffic the savings in fuel and environment is substantial. Wear and tear on parts have to be factored in for total cost savings.

Modern starters used in start/stop applications are very robust and engineered to last 100,000 miles or more during normal operation. Replacement cost for a reman Mitsubishi starter is less than 500.00 including labor. My local AAA/ASE certified mechanic tells me it is extremely rare to replace starters in these modern vehicles.

Something to note is the battery life does not decrease due to the start/stop feature. In almost every case it's the owners lack of properly maintaining the battery. It's disturbing as to why the battery and start/stop technology gets the blame when poor maintenance is the root cause.
 

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In heavy stop and go traffic the savings in fuel and environment is substantial. Wear and tear on parts have to be factored in for total cost savings.

Modern starters used in start/stop applications are very robust and engineered to last 100,000 miles or more during normal operation. Replacement cost for a reman Mitsubishi starter is less than 500.00 including labor. My local AAA/ASE certified mechanic tells me it is extremely rare to replace starters in these modern vehicles.

Something to note is the battery life does not decrease due to the start/stop feature. In almost every case it's the owners lack of properly maintaining the battery. It's disturbing as to why the battery and start/stop technology gets the blame when poor maintenance is the root cause.
When did starters have a mileage component?

In the old days starters were designed for around 30,000 starts cycles. Starters for auto idle stop systems are designed to provide 150,000 to 300,000 starter cycles. They are far more robust, but their life is not mileage based, rather on frequency of use. If you only start the vehicle once a day every day, the starter in theory should last for a minimum of 410 years based on 150,000 starts, double that you base it on 300,000 start cycles.

The wear and tear component is dependent upon how many of the start cycles are cold start, and how many are warm start. Warm starting an engine provides no more wear and tear than leaving it running. Cold starting, when lubrication is minimal for those first few seconds does cause more wear and tear.
 

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No such thing as a battery that's maintenance free. That statement falls in line with those that believe in the Honda Maintenance Minder for maintaining a reliable vehicle.
Good to know. Please educate me as to what maintenance is required on our Passport batteries. If I can extend its life, I'm all for that.
 

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Something to note is the battery life does not decrease due to the start/stop feature. In almost every case it's the owners lack of properly maintaining the battery. It's disturbing as to why the battery and start/stop technology gets the blame when poor maintenance is the root cause.
Someone once asked you where in the car's manual does Honda tell owners they must maintain their battery and/or give directives of how to do so, I think he's still waiting for an answer.
Directives for oil changes, tire rotations, coolant flush etc. are in the manual but nothing about "maintaining the battery" even the Honda Service Manual that I subscribe to does not say anything about maintaining the battery. So if the battery fails it's not the fault of the vehicle owner who did not hook his vehicle up to a battery life support, the fault lies with the manufacturer who either did not put a worthwhile battery in the vehicle or who does not know how to manage resources draining the battery.
 
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