Biga
Ram Guru
I don't think it's a government mandate, the new Tacoma does not have start stop on the 4x4 models. I believe manufacturers use it to help thier C02 numbers and MPG numbers.
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Anyone getting a 2025 with the I6 Hurricane?
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Darksteel165
Legendary member
There is no government mandate or law there is no requirement to have a start/stop system.
Nope they kept it but made it rougher as they removed the eTorque system so now you just drain your 12v battery and use your normal alternator and starter motor to resume, so expect to burn through 12v batteries even faster then people in 2019s.
Pikeman_66
Ram Guru
thats Interesting. I have been told, grant you by salesman of multiple auto brands that it is a government mandate. I have never really researched it though except how to disable it.
It doesn't "drain" the 12v battery, and won't effect battery life.
Darksteel165
Legendary member
Are we talking about the same truck guy?
If your engine shuts off due to start/stop what do you think is sending electricity to all the components still running? 12v batteries don't like to get drained very low and over time with enough traffic/stop and go you can drain it and keep reducing it's lifespan.
eTorque helped to keep the battery topped off but now it's just the alternator on the 25, in addition to needing to use the starter to resume vs the eTorque battery.
The battery management software should be sophisticated enough to prevent excessive 12v drain. My BMW's battery lasted 7 years (supplied by Varta) before needing replacement. I knew the battery was starting to get weak because the car stopped engaging the stop/start function altogether months before the battery died. As soon as I got a new battery it started engaging again on a regular basis.
Darksteel165
Legendary member
5th Gen rams are not known for their good quality 12v batteries. The 2019 folks will liley have much to say about a getting 7 years from their oem battery. I got under 2 years on my oem battery before I had to replace it and my truck was a custom order and never sat around which seems online with a ton of others.
It's hard to even find a new car with a combustion engine that doesn't have S/S anymore, but it's not federally mandated (yet).
Biga
Ram Guru
My 2019 was customer ordered as well, I am on my second replacement battery. I don't think it's the battery itself but possibly the way the etorque charges it. Other issue could be the hot engine compartment, the engine compartment seems to get way hotter then other vehicle and all my temps are perfectly fine.
silver billet
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Mine was custom ordered, it's now 5 years old with 60,000 miles and still original.
E.Hands
Well-Known Member
Your BMW's battery management system was sophisticated enough to know that the start/stop function was dangerously increasing the the work load on the battery, that's why it wouldn't allow it to engage the S/S function until you replaced the battery.
I used to be a technician for BMW in the early 2000's and attended very informative training in Atlanta. Those cars (like all modern cars now) were notoriously hard on the charging systems. We consistently had to tell owners that their $75,000 purchase required either longer highway drives or nighty trickle charging.
You have to constantly be driving in stop and go traffic. Also, if it's anything like my wife's Traverse, you have to get above 25mph before the start/stop will engage at next stop. Going on almost 5 years in her car with start/stop and still factory battery. The charging system monitor will prevent excessive discharge and restart the truck, even when sitting at a light, and not allow the engine to shut off if battery is low. I can sit in my truck for over 1/2 hour with key on/engine off and not have any issues with starting. A couple minutes at a stop light isn't going to hurt anything. You are over dramatizing a system you don't fully understand.
Darksteel165
Legendary member
The only time the auto start stop is of any value is in constant stop and go traffic.
You saying another manufacturer does it better does nothing to help Ram.
You are also running a more systems while the truck is running with A/SS engaged then just putting it on run.
People will buy what they buy, but the A/SS system for Ram or their lack of quality and right sized batteries seems to cause problems. Maybe that will be better on the 2025s, only time will tell, not anyone debating on the internet.
I and many others have gotten stuck replacing what should be essentially new batteries on our 1500s for no good reason except battery quality or poor design or both.
Right, my point is that's not a start/stop system problem, it's a RAM using crappy batteries problem. That's why I mentioned my BMW's battery was a Varta.
Yeah...that's exactly what I said lol. The battery clearly wasn't able to handle it in its old age. Things have progressed since the early 2000s by the way, mine is used almost exclusively for 5mi jaunts back and forth from the gym and grocery store. 2020- late 2021 it was only used every 2 weeks for a 15mi drive around town. Battery didn't die until last year. I have a Mercedes convertible that gets used even less and it's 4 years old on the original battery with no trickle charge. It only gets used about 3 times a month in the winter.
I bet they design how this works specific to how the EPA tests run in order to get the best results on both MPG and emissions.
Bsteiner36
Well-Known Member
I have a 2019 with no Start Stop and my battery still died at around 3 years of use.
CHeYeNNe71
Ram Guru
Same here!
silver billet
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What are y'all doing to your batteries?? I suggest stop trying to power your home with them!
The factory battery in our 2020 Limited (non etorque Hemi) died at just under 3 years. Etorque (stop/start) isn't what's killing them.
Darksteel165
Legendary member
Maybe so, but it aint helping the situation unless Ram is going to start putting higher quality batteries in these very expensive trucks
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