Porsche Macan Forum banner
281 - 300 of 346 Posts

·
Registered
Joined
·
1,022 Posts
A useful post thanks!

One correction - you don't need to remove the subwoofer to access the battery terminals, only to remove it. Here's a photo showing the sub in place:

View attachment 228769

You do have to remove the spare wheel though, if you have one!

I have just purchased a CTEK 8mm direct connection adapter that I am hoping to leave permanently wired to the terminals under the bonnet (hood). I am hoping that these screws will enable me to attach the adapter to the positive terminal and leave room to replace the cover: https://www.amazon.co.uk/Button-Stainless-Socket-Screws-Delivery/dp/B00I2W1RNW

I did try charging using the cigarette lighter socket on the centre console, but found that even the slightest disturbance of the CTEK extension/connection leads was enough for the charger to lose its continuity and signal loss of connection. Despite following the agreed connection sequence, one time it even lost connection and then discharged my battery!
Thanks Guy that should make the battery terminals an easier option for pig tail leads. I was watching a YouTube video on battery removal and I guess I thought it looked like terminals were toward the rear under the subwoofer. Is there another option for attaching a "ring" connection lead other than the terminal clamp. The video I was watching indicated that if the clamp bolt was fully unscrewed it would ruin the threads of the bolt through the clamp.

Because of the issue with the battery clamp I was leaning toward attaching leads to the jumper posts under the hood (bonnet) So that its fits under the positive terminal cover I was thinking of either using a hex head bolt to attach a ring lead but grinding down the head down a little to allow for the cover. Another option would be to get another jumper post but grinding down the bottom a little so that it screws down lower allowing for attachment of the lead with a screw as you indicated. Its only a $4.00 part here in the US Part # 955 611 206 00. The part looks like it is just a threaded hollow post.
 

·
Registered
Joined
·
123 Posts
I didn't see another option for a ring connection. From my other battery photos there's nothing else on the negative terminal, and I didn't actually lift the plastic cover to investigate the positive. It therefore looks like a U-clamp would be the safest option (or modification of the CTEK ring connectors with some snips.)

I didn't actually unscrew the under-bonnet positive terminal - mainly because its a strange octagonal nut (rather than the usual hexagonal) and I didn't have a suitable socket. If my bolts work (when they arrive) I'll probably stick with that - I ordered 12mm long bolts as I estimate there's approx 15mm of depth in the positive terminal. I'll post a couple of photos when I have done it.

Here's the octagonal terminal (must be a UK thing) - what's also strange that it's a different thread size to the negative terminal!

IMG_3668.jpg
 

·
Registered
Joined
·
123 Posts

·
Super Moderator
Joined
·
10,122 Posts
My vote is yes, for a sticky with full details, and covering different chargers.

FWIW, as an added data point, yada yada, I have two PulseTech Xtreme XC-100 smart chargers (XC100-P Xtreme Charge 12V Battery Maintenance Charger Desulfator), mostly used for motorcycles and a riding lawn mower.

In pre-Macan times, once a year or so, when our Camry wasn't going to be used for a couple of days, I'd throw the PulseTech on it. Despite the Camry's being a daily driver (and we did at least one, possibly two, battery replacements over a decade), the PulseTech would take at least overnight to pronounce it fit, i.e., get to its 100% light.

My point here is that depending on what the charger is doing -- allegedly desulfating and so forth -- even with a good battery, and even on a daily driver, these smart chargers may take a long time to satisfy themselves. I think this may be the case, regardless of how much current they put out, i.e., I think the time involved is more dependent on what sort of exercise they're putting the battery through.
OK, I will take care of it for CTEK. Any other kind, just add to the thread I'll start.
 

·
Registered
Joined
·
5 Posts
I just connected a harness straight to the positive & negative terminals up front. Used 8mm stainless button head hex for the positive & put the negative terminal under the earth connection. Harness comes out through the windscreen washer hole. I used Deustch 2 pin connector for the harness & have a blanking connector when not on the charger.
No problems charging & very practical. I use CTEK MXS 5.0
. 20200222_085354.jpg 20200222_085406.jpg 20200222_085413.jpg 20200222_085511.jpg 20200222_085634.jpg 20200222_085822.jpg
 

·
Registered
Joined
·
123 Posts
I just connected a harness straight to the positive & negative terminals up front. Used 8mm stainless button head hex for the positive & put the negative terminal under the earth connection. Harness comes out through the windscreen washer hole. I used Deustch 2 pin connector for the harness & have a blanking connector when not on the charger.
No problems charging & very practical. I use CTEK MXS 5.0
Good idea to trim the edge of the (low cost) battery terminal cover so that it will sit flush. Interesting to see that your terminal cover has a rubber retaining strap - my 2015 Macan doesn't.
 

·
Registered
Joined
·
3,344 Posts
My 2016 Macan also lacks a retaining strap for the Jump Start + terminal.
I wonder if that can be added?

To prevent loss of the cover.
 

·
Registered
Joined
·
186 Posts
My 2016 Macan also lacks a retaining strap for the Jump Start + terminal.
I wonder if that can be added?

To prevent loss of the cover.
My 2016 also lacks the cover strap, but the cover and base do have strap holes (wide enough for velcro or zip tie).

I'm going to look for a button head screw like fontana302, so the cover actually fits.
 

·
Registered
Joined
·
8 Posts
Porsche recommends if you don't drive daily, or leave vehicle for extended periods that you should use their charger (of course) but I already have the C-tek charger and the comfort adaptor (plug-in) which I'm pretty sure is the same charger. Anyway, they say to charge it through a 12v receptacle in the vehicle but I notice all the 12v receptacles "switch off" when the vehicle is left unattended so I'm wondering if anyone has charged this way yet and if it stays on when charging. I'm going to be leaving the vehicle unattended for a vacation and want to leave the maintainer on, prevents sulfation and improves battery longevity, not to mention the battery draining.
Just read your post from years ago and noticed that no one answered your question correctly. The 12v outlets in my 911 remain on if the device plugged in is supplying power. If it is drawing power (I.e. radar detector, etc.) the outlet shuts down in about a half hour. However, I noted that my Macan always shutdown in 30 minutes as you noted in your post. That answer is to have your dealer program the outlets to stay on if the device connected is supplying power. Why Porsche programmed the 911 one way and the Macan the other way is a mystery. Anyway, now I can trickle charge my Macan via one of the 12v outlets no problem. I hope my “way late” response finds it’s way to you. My dealer made the change for free. He agreed it should have come that way from the factory!
 

·
Premium Member
Joined
·
3,227 Posts
Just read your post from years ago and noticed that no one answered your question correctly. The 12v outlets in my 911 remain on if the device plugged in is supplying power. If it is drawing power (I.e. radar detector, etc.) the outlet shuts down in about a half hour. However, I noted that my Macan always shutdown in 30 minutes as you noted in your post. That answer is to have your dealer program the outlets to stay on if the device connected is supplying power. Why Porsche programmed the 911 one way and the Macan the other way is a mystery. Anyway, now I can trickle charge my Macan via one of the 12v outlets no problem. I hope my “way late” response finds it’s way to you. My dealer made the change for free. He agreed it should have come that way from the factory!
So here's the deal. If you plug in your Ctek charger to the cigarette lighter after turning the car off you are good to go EXCEPT if the power goes off from the source. Then it won't restart. That is why all the people here are turning to connecting to the battery or to the connections under the hood. The rest of us who see our car more frequently can deal with the ease of the cigarette lighter.
 

·
Registered
Joined
·
2,501 Posts
I just connected a harness straight to the positive & negative terminals up front. Used 8mm stainless button head hex for the positive & put the negative terminal under the earth connection. Harness comes out through the windscreen washer hole. I used Deustch 2 pin connector for the harness & have a blanking connector when not on the charger.
No problems charging & very practical. I use CTEK MXS 5.0
I'm not trying to be a smarta$$ here -- this is a real question, just trying to understand the situation, etc.

My question: I like your well-thought-out clean mod, but does it still require you to open the hood to hook up your CTEK? If that's the case, what is the advantage, vs. just applying some alligator clips (which typically come as one of the sets of leads with smart chargers) to the terminal posts, after opening the hood?
 

·
Super Moderator
Joined
·
10,122 Posts
I'm not trying to be a smarta$$ here -- this is a real question, just trying to understand the situation, etc.

My question: I like your well-thought-out clean mod, but does it still require you to open the hood to hook up your CTEK? If that's the case, what is the advantage, vs. just applying some alligator clips (which typically come as one of the sets of leads with smart chargers) to the terminal posts, after opening the hood?
He's coming out near the wipers


See Charging the Macan

Another approach coming out near the vents.

On my 911 I came out near the wipers.
 

·
Registered
Joined
·
2,501 Posts
He's coming out near the wipers


See Charging the Macan

Another approach coming out near the vents.

On my 911 I came out near the wipers.
I get that (I think) -- the part about by the wipers.

But it looks to me (we're talking about the pics by @fontana302, right?) like the wiring coupler end is stored, tucked away, by the washer-fluid cap. So my question is whether the hood has to be first opened, in order to get to that connector.

I believe it may even have been you, who noted recently, that the hood isn't really intended for frequent usage, so I'm trying to get a handle on how @fontana302 deals with this issue, if at all.
 

·
Super Moderator
Joined
·
10,122 Posts
I get that (I think) -- the part about by the wipers.

But it looks to me (we're talking about the pics by @fontana302, right?) like the wiring coupler end is stored, tucked away, by the washer-fluid cap. So my question is whether the hood has to be first opened, in order to get to that connector.

I believe it may even have been you, who noted recently, that the hood isn't really intended for frequent usage, so I'm trying to get a handle on how @fontana302 deals with this issue, if at all.
I see your point. @MarkTr looks like he's leaving the plug hanging out. That's not clear from the pictures above with the second method.

True, that hood is not meant for constant opening and closing like a door. If the CTEK plug isn't permanently out, there's little point of doing that.
 

·
Registered
2020 Macan S Sapphire Blue, Steel Built 02/20.
Joined
·
111 Posts
See Charging the Macan

Another approach coming out near the vents.

On my 911 I came out near the wipers.
I really like this approach for coming out under the turn signal. Think I'll be trying this way for sure as it avoids the wiper area and the necessity if opening the hood.
 

·
Super Moderator
Joined
·
3,426 Posts
I noticed the query in the included link above where someone asked about using stainless steel
as a fastener type. Was the primary concern with corrosion or electrical conductivity?

What about copper? Its conductivity is second only to silver.


jes sayin'
 

·
Registered
Joined
·
2,501 Posts
I noticed the query in the included link above where someone asked about using stainless steel
as a fastener type. Was the primary concern with corrosion or electrical conductivity?

What about copper? Its conductivity is second only to silver.


jes sayin'
My guess is that whoever used stainless steel did so for its anti-corrosion properties, as well as its easy availability and reasonable strength.

To my thinking -- but I'm not an engineer, and never even played one on TV -- it seems that it doesn't matter to any significant degree, in terms of conductivity, whatever you use. That is, the connector's metal O-loop will be mushed against the top of the existing jumper post by any bolt, so the path of electricity will be between that post and the O-loop metal (which loop itself is made of ... what?).
 

·
Registered
Joined
·
637 Posts
Today I tried to connect my CTEK to my Macan but it kept stopping charging the battery after 30 minutes - I ended up hooking the CTEK to the connectors under the hood.
These are the steps:
1. Turn off the car.
2. Plug CTEK into the cigaretter lighter.
3. Plus CTEK into the power socket.

It looks like the electronics that are supposed to to handle charging via the cigarette lighter didn't get the message to start working.
Any ideas why would my car be unhappy with the cigarette lighter this time?
 
281 - 300 of 346 Posts
Top