battery change
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Laughing Gas
Joined: Feb 2004
Posts: 1,200
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From: Ottawa, Ontario Canada
battery change
Planning a battery change on a 2016 Lariat soon. On some older vehicles, we always hooked up a small lawn tractor battery first through the cigarette lighter so as not to lose the radio presets. Is this necessary on a 2016, or will any other badthings happen when the truck battery is disconnected and there is no 12volts present for a few minutes?
New User
Joined: Nov 2018
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I think the Duralast Gold batteries from Autozone are a good battery and the fact it is easy to warranty if it does fail. Used it on my last truck and liked it. I also went with higher CCA which helped out a lot. I plan on going this route when I replace my battery. It is the only part I will ever buy from AZ.
Logistics Pro
Joined: Nov 2004
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Planning a battery change on a 2016 Lariat soon. On some older vehicles, we always hooked up a small lawn tractor battery first through the cigarette lighter so as not to lose the radio presets. Is this necessary on a 2016, or will any other badthings happen when the truck battery is disconnected and there is no 12volts present for a few minutes?
Since vehicles nowadays are basically big computers, i think it’s good to “reboot” them once and awhile, so if it were me, I would let it go completely dead. Who knows, you may even find better radio stations......
Lead Driver
Joined: May 2015
Posts: 5,886
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From: Mts. S. of San Francisco
It might depend on how long you leave it without power, but my impression is that a bunch of things get reset after the power has been off for more than "X" minutes, but I don't know what X is. For example, you can reset the learned programming for the transmission by disconnecting the power for a bit.
Mountain Pass
Joined: Apr 2016
Posts: 183
Likes: 57
From: Middle of Nevada
Planning a battery change on a 2016 Lariat soon. On some older vehicles, we always hooked up a small lawn tractor battery first through the cigarette lighter so as not to lose the radio presets. Is this necessary on a 2016, or will any other badthings happen when the truck battery is disconnected and there is no 12volts present for a few minutes?
Lead Driver
Joined: Nov 2011
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Fleet Owner
Joined: Jan 2004
Posts: 26,007
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From: Brentwood,CA
10 years is unlikely, most of us are getting max 3 years on the one battery. Don't attempt to backfired power through a 12v outlet in the truck without the primary battery attached. You will backfeed to the PCM and the SJB and things will happen. The battery also does need a BMS reset after changing. If you get the battery at the dealership they know the correct procedure.
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Post Fiend
Joined: Apr 2002
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From: Waterloo, Iowa
Fleet Owner
Joined: Jan 2004
Posts: 26,007
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From: Brentwood,CA
Yes. Backfeeding through a SJB is never a good idea. There was a TSB in regards to trucks that continued to run after key was removed. Due to devices plugged into the 12v outlet without backfeed protection.
Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
I think I have a battery starting to go south but it would be nice to run a parasitic load test without losing that memory. If one is really careful with the DVOM probes, it will keep memory alive during the milli-amp draw testing won't it??
The manufacturers sure have made what was once a simple task into kind of a headache at best!
Lead Driver
Joined: May 2015
Posts: 5,886
Likes: 359
From: Mts. S. of San Francisco
My general rule of thumb for a battery is 5-6 years. Shorter if the conditions are difficult, and maybe a bit longer if it's had an easy life. If I have a battery still working after 6 years, you can bet that I'm shopping for one.
Post Fiend
Joined: Apr 2002
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From: Waterloo, Iowa
https://www.aa1car.com/library/battery_disconnect_problems.htm
Posting Guru
Joined: Jan 2006
Posts: 1,490
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From: Arizona/Texas
Good info about the battery and the battery management system in the owners manual.
After battery replacement, or in some cases after charging the battery with an external charger, the battery management system requires eight hours of vehicle sleep time to relearn the battery state of charge. During this time your vehicle must remain fully locked with the ignition switched off.
After battery replacement, or in some cases after charging the battery with an external charger, the battery management system requires eight hours of vehicle sleep time to relearn the battery state of charge. During this time your vehicle must remain fully locked with the ignition switched off.
Posting Guru
Joined: Jan 2006
Posts: 1,490
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From: Arizona/Texas
When the battery is disconnected or a new battery is installed, the engine must relearn its idle and fuel trim strategy for optimum driveability and performance. Flexible fuel vehicles (FFV) must also relearn the ethanol content of the fuel for optimum driveability and performance.
To restore the settings, do the following:
To restore the settings, do the following:
- Apply the parking brake.
- Shift into park (P) or neutral (N).
- Switch off all accessories.
- Press the brake pedal and start your vehicle.
- Run the engine until it reaches normal operating temperature. While the engine is warming up, complete the following: Reset the clock. Reset the power windows bounce-back feature. See Power Windows. Reset the radio station presets. See General Information.
- Allow the engine to idle for at least one minute.
- Drive the vehicle at least 10 mi (16 km) to completely relearn the idle trim and fuel trim strategy.