Odd power outlet behavior
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Thread: Odd power outlet behavior

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    Odd power outlet behavior

    I use a CTEK MUS 4.3 to keep the battery of my 2013 981BS topped up. I have always used the power outlet and an adapter to deliver charge to the battery and until recently, it worked fine. However, the other day, after a week in the garage, I hooked up the charger, LEDS's lit successively as expected. Upon return the next morning, the main power light was blinking green and no other lights were on. This is what one will see if you plug the charger into the wall and leave it disconnected from the battery. So, I have tried all the tricks mentioned here....turning on the key for a bit, turning on the key while connecting and I have tried all three power outlets...same behavior. It suggests the power outlets are on initially but they time out after 15-20min or so.

    Don't know why this would change or if there are any other thoughts about why this is happening. Its a new battery (the charger worked fine, even after the battery change, which was made about three months ago) with full charge and normal function. I have lost my direct to battery connectors, so purchased a couple. Will try connecting directly to battery and hopefully that should resolve the issue, but still wondering why my power outlets are all timing out now when they never did it before, nor do others have that experience!

    Thoughts?

    Robbie
    2013 Boxster S

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  3. #2
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    Re: Odd power outlet behavior

    The outlet in the foot well of the passenger side is the one that is not supposed to timeout


    Mike

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    Re: Odd power outlet behavior

    Yes, but as stated, I tried all three outlets, console, glove compartment and passenger footwell. All three timed out, when none of them has ever timed out before. Weird.
    Last edited by rchaas; 03-29-2017 at 09:39 AM.
    2013 Boxster S

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    Re: Odd power outlet behavior

    Could there have been a power outage? Car said no juice and turned off the outlet.


    Sent from my iPhone using Tapatalk Pro
    '71 914 1.7L. '14 Boxster S (Silver & Black) w/ PDK, PTV, PASM, MFSW, heated SW, headed/vented seats, auto-dimming mirrors, rain sensor, ACC/PAS, light-design pkg, 14-way power seats w/ memory, climate control, Bose PCM & NAV, 20" Carrera classic wheels, PDLS, leather pkg, aftermarket backup camera & grills

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    Re: Odd power outlet behavior

    I suppose, but three times in a row, with three different outlets makes that less likely. Also, no power outages in the house, but we do have a detached garage. Didn't notice garage lights going out either. Thanks for the thought.
    2013 Boxster S

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    Re: Odd power outlet behavior

    I mentioned this on the CR blog, but am having my '15 CGTS serviced today and asked the Service Mgr. He said that the 981 -- for sure my CGTS will support charging from the console receptacle ... no "time outs". And he's been right far too many times in the past.. FWIW
    D

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    Re: Odd power outlet behavior

    "Been here, done this"!.......I had a similar experience. My car is a 2015 Boxster S and I used the CTEK charger from the start. Worked fine for about a year. Then it "seemed" to act strange. Charge indicator would show green and the red LED would flash at the same time. Odd. I contacted CTEK and found that they had some chargers that had a "defective" connector....the little red part that goes on the plug that goes into the "cigar lighter" outlet. Sent me a new one (which looked exactly like the old one) and it worked for about 2 weeks! Then the same issue came back. I called the service manager at my local Porsche Dealership, and he stated he has seen this before. He suggested to try this: connect the charger to the outlet in the console before shutting the engine off. Then plug the CTEK into the 110 wall outlet. Then press the button to show charging a car. Should show two red lights, then once charged, the green light will illuminate. Tried it, and it has worked ever since........then I got tired of using this method, so I tried something else........before plugging in the charger to the car (engine not running), I opened the trunk...(light in the trunk goes on!).......then while the trunk is open, plugged the CTEK into the console outlet....then connected to the 110 power, then pressed the button to show charging a car. This method has worked perfectly as well. There is something very strange about the electronics in these cars. I have tried all the cigarette lighter (power) outlets and they all seem to work the same way. Try the console outlet with the trunk open (yes you can close the trunk after you connect the CTEK) Hope this works for you as it did for me!

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    Odd power outlet behavior

    Quote Originally Posted by amf View Post
    "Been here, done this"!.......I had a similar experience. My car is a 2015 Boxster S and I used the CTEK charger from the start. Worked fine for about a year. Then it "seemed" to act strange. Charge indicator would show green and the red LED would flash at the same time. Odd. I contacted CTEK and found that they had some chargers that had a "defective" connector....the little red part that goes on the plug that goes into the "cigar lighter" outlet. Sent me a new one (which looked exactly like the old one) and it worked for about 2 weeks! Then the same issue came back. I called the service manager at my local Porsche Dealership, and he stated he has seen this before. He suggested to try this: connect the charger to the outlet in the console before shutting the engine off. Then plug the CTEK into the 110 wall outlet. Then press the button to show charging a car. Should show two red lights, then once charged, the green light will illuminate. Tried it, and it has worked ever since........then I got tired of using this method, so I tried something else........before plugging in the charger to the car (engine not running), I opened the trunk...(light in the trunk goes on!).......then while the trunk is open, plugged the CTEK into the console outlet....then connected to the 110 power, then pressed the button to show charging a car. This method has worked perfectly as well. There is something very strange about the electronics in these cars. I have tried all the cigarette lighter (power) outlets and they all seem to work the same way. Try the console outlet with the trunk open (yes you can close the trunk after you connect the CTEK) Hope this works for you as it did for me!
    Trying the open trunk technique now.


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    2013 Boxster S

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    Re: Odd power outlet behavior

    Quote Originally Posted by rchaas View Post
    Trying the open trunk technique now.


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    Checked back after 30 min, all LEDs off, green mains light blinking. The outlet powers down. Weird.

    I have a query in to Porsche mechanic, we'll see if they have any ideas.


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    2013 Boxster S

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    Re: Odd power outlet behavior

    Another WAG, could the charging current a battery will take ( at a given voltage) decrease as the battery ages? I'm thinking the car shuts off the outlet when it senses no current after a while.


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    '71 914 1.7L. '14 Boxster S (Silver & Black) w/ PDK, PTV, PASM, MFSW, heated SW, headed/vented seats, auto-dimming mirrors, rain sensor, ACC/PAS, light-design pkg, 14-way power seats w/ memory, climate control, Bose PCM & NAV, 20" Carrera classic wheels, PDLS, leather pkg, aftermarket backup camera & grills

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    Re: Odd power outlet behavior

    If I were there, having my ScopeMeter and an inductive current probe, I'd be recording the charging current and voltage to see what's what. I'd hope a tech can do that for you.


    Sent from my iPhone using Tapatalk Pro
    '71 914 1.7L. '14 Boxster S (Silver & Black) w/ PDK, PTV, PASM, MFSW, heated SW, headed/vented seats, auto-dimming mirrors, rain sensor, ACC/PAS, light-design pkg, 14-way power seats w/ memory, climate control, Bose PCM & NAV, 20" Carrera classic wheels, PDLS, leather pkg, aftermarket backup camera & grills

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    Re: Odd power outlet behavior

    Quote Originally Posted by MidEngine-Fan View Post
    If I were there, having my ScopeMeter and an inductive current probe, I'd be recording the charging current and voltage to see what's what. I'd hope a tech can do that for you.


    Sent from my iPhone using Tapatalk Pro
    Relatively new battery, put it in 3 months ago. That info would be useful. I suspect we'll be having the tech have a look.


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    2013 Boxster S

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    Re: Odd power outlet behavior

    A day at Porsche. They were able to fix it by "recoding" the car, pointing all the computers in the car to their correct pathways. They had no idea why it happened, hadn't seen it in a 981. I'm wondering if my Pearl rear vision setup (which uses the OBD2 port) might have had something to do with it.

    All good now!


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    Re: Odd power outlet behavior

    Nope. Same thing, not fixed. Odd power outlet behavior next step is direct battery attachment. Oh well.


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    Re: Odd power outlet behavior

    Sorry. I was skeptical of the bitrot theory, but sometimes all you can do is reinstall and hope.
    '71 914 1.7L. '14 Boxster S (Silver & Black) w/ PDK, PTV, PASM, MFSW, heated SW, headed/vented seats, auto-dimming mirrors, rain sensor, ACC/PAS, light-design pkg, 14-way power seats w/ memory, climate control, Bose PCM & NAV, 20" Carrera classic wheels, PDLS, leather pkg, aftermarket backup camera & grills

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    Re: Odd power outlet behavior

    back to the dealer for testing of my "aftermarket" AGM battery which Porsche NA says might be the culprit, and if not, then "gateway computer" testing. If those are all ok, then they want me to remove the smart top module...ugh (i really like that module). Haven't decided if I'll do that but will go along for now...also not sure I'll buy a "Porsche" battery, if they claim my new replacement battery is the cause.
    2013 Boxster S

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    Re: Odd power outlet behavior

    Love my Smarttop, too. It is possible to make a jumper so you can more easily disconnect the Smarttop. I did that when I installed mine. I understand why they want you to remove it, but would be surprised if that were the issue. The battery is more likely, but still mysterious. I still would want to record V and I, rather than shot gunning it.


    Sent from my iPad using Tapatalk Pro
    '71 914 1.7L. '14 Boxster S (Silver & Black) w/ PDK, PTV, PASM, MFSW, heated SW, headed/vented seats, auto-dimming mirrors, rain sensor, ACC/PAS, light-design pkg, 14-way power seats w/ memory, climate control, Bose PCM & NAV, 20" Carrera classic wheels, PDLS, leather pkg, aftermarket backup camera & grills

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    Re: Odd power outlet behavior

    Quote Originally Posted by MidEngine-Fan View Post
    Love my Smarttop, too. It is possible to make a jumper so you can more easily disconnect the Smarttop. I did that when I installed mine. I understand why they want you to remove it, but would be surprised if that were the issue. The battery is more likely, but still mysterious. I still would want to record V and I, rather than shot gunning it
    i like the jumper idea, and I agree, I can see their rationale but feel it's unlikely the cause. If it comes to removal, I might hit you up for more details about your install.

    Thanks!
    2013 Boxster S

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    Re: Odd power outlet behavior

    Sure. The trick I recall was finding the right connector. I keep it in the trunk, so I could probably find it


    Sent from my iPhone using Tapatalk Pro
    '71 914 1.7L. '14 Boxster S (Silver & Black) w/ PDK, PTV, PASM, MFSW, heated SW, headed/vented seats, auto-dimming mirrors, rain sensor, ACC/PAS, light-design pkg, 14-way power seats w/ memory, climate control, Bose PCM & NAV, 20" Carrera classic wheels, PDLS, leather pkg, aftermarket backup camera & grills

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    Re: Odd power outlet behavior

    Battery checks out. Took out the smart top, cause they can't check the gateway computer with it installed (it evidently shows up). So back again next week for another round of testing.

    So I guess what's needed is a plug into ports 42 and 34 that can receive either the native leads or the smart top leads?


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