Question on "baddery" terminals...
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    HydroHarold's Avatar
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    Question on "baddery" terminals...

    I "don't do car engines" anymore, I don't know what all that stuff is under the hood which appeared in the last 30 years. The other day Wifey's '04 Explorer battery wouldn't spin the engine, had juice just not enough. Last time when the old battery went totally dead it did some sort of computer reset and had to be "seen by a professional" to get it going again... I charged it a bit and it started.

    All it needs is cleaning the battery terminals properly and then grease them. BUT, what happens when I disconnect the cables for the cleaning? These are the cheapo Ford springy/no bolt type. I really don't want another service call to the house for a reset.

    Thanx!!
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    Your last experience sounds like an anomaly. I had the terminals disconnected on an 05 Explorer a couple days ago. When I reconnected and started the vehicle, the only warning light that stayed on was the "Charge" light. I shut the engine off and restarted and the light cleared. However, I had taken the alternator out and that may have been the cause of the warning light, rather than the disconnected terminals.

    I say, go for it. You should be fine. However, if you want to be super-safe, I don't see why you couldn't jumper a 12 volt source to the cables during the removal and cleaning. It's probably not needed, but may be good for piece of mind.

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    Quote Originally Posted by HydroHarold View Post
    I "don't do car engines" anymore, I don't know what all that stuff is under the hood which appeared in the last 30 years. The other day Wifey's '04 Explorer battery wouldn't spin the engine, had juice just not enough. Last time when the old battery went totally dead it did some sort of computer reset and had to be "seen by a professional" to get it going again... I charged it a bit and it started.

    All it needs is cleaning the battery terminals properly and then grease them. BUT, what happens when I disconnect the cables for the cleaning? These are the cheapo Ford springy/no bolt type. I really don't want another service call to the house for a reset.

    Thanx!!

    Put a set of jumper cables on and hook to another car before taking wires off battery post. You could also, use a charger to maintain a voltage to cars CPU.
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    HydroHarold's Avatar
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    Quote Originally Posted by Firemark View Post
    Put a set of jumper cables on and hook to another car before taking wires off battery post. You could also, use a charger to maintain a voltage to cars CPU.
    Great, thanks! Battery charger it is!
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    Quote Originally Posted by HydroHarold View Post
    Great, thanks! Battery charger it is!
    If the "baddery" charger is less than ~10 years old,,, the charger probably has technology built in that will shut it off when the battery is disconnected from the cables.

    I keep a real old charger around for such tasks.
    I mostly use it for rust removal.

    If the charger clips will not "spark" if touched together,, the charger is too new to work for this.
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    I don't have the same vehicle but my thoughts are you have nothing to worry about. When I replaced the battery in my 2011 Toyota I simply removed the battery, drove to the auto parts store and bought a new one (turning in my core) and returned home and installed the new battery. The vehicle was without a battery for probably close to 1 1/2 hours. Once reconnected the engine started and everything was fine.
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    I don't think there would be a problem with just disconnecting the battery. One problem with older cars when all this electronic memory first started is they would lose the radio station settings and we used to use these memory savers to prevent that.

    https://www.amazon.com/CTA-Tools-300.../dp/B000GKD5Q0

    However, while searching for this just now, I came across this, warning not to use a memory saver today. So I probably would not use one on cars today. YMMV.

    Memory savers not recommended by industry experts | Search Autoparts
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    John Deere 1025R TLB's Avatar
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    Well I changed my battery in my Passat TDi, and it was supposed to need all this stuff reset by the dealer, like auto down and up window function, etc.... everything still works as it should. Just want to make ya think the dealer has to do it.... Not!

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    John Deere 1025R TLB's Avatar
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    Quote Originally Posted by spferdil View Post
    I don't think there would be a problem with just disconnecting the battery. One problem with older cars when all this electronic memory first started is they would lose the radio station settings and we used to use these memory savers to prevent that.

    https://www.amazon.com/CTA-Tools-300.../dp/B000GKD5Q0

    However, while searching for this just now, I came across this, warning not to use a memory saver today. So I probably would not use one on cars today. YMMV.

    Memory savers not recommended by industry experts | Search Autoparts
    Only if you are welding. This dongle ain't supposed to be used for other things than changing the battery. My Passat the cigarette lighters die with the engine. Went through the trouble of hooking up the fuse box to back feed while changing the DSG fluid. Was to cold when I changed the battery. Only had to reset the clock and radio. That was it. Total waste of time first time around.

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    Last edited by John Deere 1025R TLB; 04-20-2017 at 09:32 PM.
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    HydroHarold's Avatar
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    THANKS EVERYONE!!! I'm sure my box type chargers are "old enough" as one of 'em was my Dad's and the other I brought with me to this shop 20 years ago. I'll give that hookup a go "just to be on the safe side".

    I'm trying to talk Wifey into buying a new something, she only likes "big and high vehicles" (bad back/legs). The car only has 18k mi. on it but small plastic objects are failing on my side (shotgun) like the assembly that used to hold the visor up had to be "permanently rewired" in the up position...
    2013(12) 1026r TLB 54 QH front blade, 54D Auto Connect deck, ballast box, carryall

    '04 GX335, 48C, Johnny Bucket Jr., PowerFlow W/7bu. bagger, 42 snow blower, 48 Plow, JD front dethatcher, 10 Cart, Little-Brown Henway, Stihl 026P/20", Stihl 241/16", Stihl BG 85 blower, Stihl KombiMotor 110 w/string trimmer/brush cutter/edger/pole saw/hedge trimmer, Snapper 21" WB, Snapper 8/24 snow blower

    "...and visions of green CUT sugarplums dance in his head..."

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