What is a memory saver?
Thread Starter
Pit Crew
Joined: Oct 2019
Posts: 211
Likes: 5
From: wi
What is a memory saver?
I just found out that my 2015 GS 350 does not have the battery hold-down cage and tie down brackets. So, to get these two installed I think I need to remove the battery. However, if I remove the battery, I assumed, all my custom settings in the vehicle will be wiped out. Thus, I saw this
that mentioned about a "memory saver". I'm not sure what that is and how much it'll cost. Will I lose all the presets in this 2015 GS 350 if the battery is disconnected? If so, what "memory saver" should I be looking at purchasing? I also owned a 2014 LX 570 so if I'm going to get a memory saver I must as well get one that works for both vehicles.
I just found out that my 2015 GS 350 does not have the battery hold-down cage and tie down brackets. So, to get these two installed I think I need to remove the battery. However, if I remove the battery, I assumed, all my custom settings in the vehicle will be wiped out. Thus, I saw this YouTube video that mentioned about a "memory saver". I'm not sure what that is and how much it'll cost. Will I lose all the presets in this 2015 GS 350 if the battery is disconnected? If so, what "memory saver" should I be looking at purchasing? I also owned a 2014 LX 570 so if I'm going to get a memory saver I must as well get one that works for both vehicles.
I use the below and I like it because it's a large battery and it plugs into the OBD 2 port instead of some that plug into the 12v accessory port (some of which are not always active when the ignition is off)
EZRED MS4000 Automotive Memory Saver With Built In Charger , Black https://a.co/d/edJj2ni
Intermediate
Joined: Jul 2022
Posts: 404
Likes: 126
From: North Carolina
I don't believe they are lost, as they are written to the hard drive in the nav unit.
Now, what you will lose is your HVAC setpoints. Also, to prevent any issues, I would turn the HVAC fully OFF before removing the battery.
Anything that was in auto (heated seats, folding mirrors, etc) will be out of auto. Your backup mirror settings I think you'll lose, but the settings for mirror and seat position you shouldn't.
My battery has died a few times, and I've pulled it once to refresh the alternator. You'll be fine.
When you get back in the car, keep your foot OFF the brake, hit the ON/start button once and wait about 30sec. Then push it again and wait a good 30sec before actually starting the car back up and messing with things and it should be OK.
Now, what you will lose is your HVAC setpoints. Also, to prevent any issues, I would turn the HVAC fully OFF before removing the battery.
Anything that was in auto (heated seats, folding mirrors, etc) will be out of auto. Your backup mirror settings I think you'll lose, but the settings for mirror and seat position you shouldn't.
My battery has died a few times, and I've pulled it once to refresh the alternator. You'll be fine.
When you get back in the car, keep your foot OFF the brake, hit the ON/start button once and wait about 30sec. Then push it again and wait a good 30sec before actually starting the car back up and messing with things and it should be OK.
Instructor
Joined: Oct 2022
Posts: 929
Likes: 398
From: FL
I remember they used to sell a 9v battery adaptor that plugged into the coig lighter "to keep radio presets". But I suppose that won't work with ours since 12v is disconnected.
Search on Amazon "obd ii memory saver" and you'll see a bunch that plug into the OBD2 port. I may have gotten lucky, but before I knew of the issues, I repeatedly disconnected/connected my battery while doing my sub install and didn't have issue. But it seems when stuff breaks, it breaks, so better to have that insurance.
Search on Amazon "obd ii memory saver" and you'll see a bunch that plug into the OBD2 port. I may have gotten lucky, but before I knew of the issues, I repeatedly disconnected/connected my battery while doing my sub install and didn't have issue. But it seems when stuff breaks, it breaks, so better to have that insurance.
Instructor
Joined: Oct 2022
Posts: 929
Likes: 398
From: FL
Only caution would be just making sure the jump starter is able to provide continuous power. I have a NOCO jump starter that cuts out after some time (as in not meant to be used in a continuous amp draw capacity).
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