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Replacing & Registering the Battery

436K views 1.7K replies 210 participants last post by  SouthJerseyRider  
#1 ·
Hopefully I will not need to do this for 3-4 years but I’m curious. Manual p. 314 says only have done by Porsche dealer & you cannot tell what type of (aftermarket) battery will replace the genuine Porsche battery by the markings on the battery. WTF?!

I like Interstate brand. Often better quality than OEM but, that is for lead acid, not sure for AGM.

So, has anyone here had to replace their battery & did you have Porsche do it & what did it cost you?

I finally took a look at my battery which is under the trunk floor in front of the Bose SubW (After lift the cargo floor, must lift carpet & then lift another cover to view & if need to access/change it--would need to remove collapsible spare tire!)

I see mine is 92Ah.

I searched & found Gaudin Porsche offers two; a 92Ah & a more powerful 105 Ah.


958-611-105-21
BATTERY 105 AMP HOUR MSRP $543.76, online price $351.05
Replaces:958-611-105-20

958-611-092-21
BATTERY 92 AMP HOUR MSRP $439.44, online price $283.70
Replaces: 7PP-915-105, 955-611-085-00, 955-611-092-00, 958-611-092-20

So, if you wanted the same battery you have now you’d get the 92Ah for $283.70.
My guess is that to have Porsche replace it for you you’d pay MSRP $439.44 + ½ hr. Labor! ~$500 to replace a @#$!!** battery?!

For Lead Acid batteries, you just need the dimensions to fit the space & the correct Ah & then it is reliability, price, warranty & specs such as CCA. How can it be that much different for AGM types? If, for example, Interstate made one to fit Macan that was the same size with more Ah for ~ $150 it would be tempting. For now, until I learn that aftermarket brands are available & work well, I’d probably upgrade to the genuine Porsche 105 AH & DIY.
 
#235 ·
This video is better. Its not 1965. Forget about what you know from the past. Technology goes forward.

This shows why the vent is there. Overcharging. AGM wants to be charged low and slow unlike lead acid where you used to see the rapid chargers. You might think the people who engineered the cars knew what they were doing.

So if you don't register the battery, its probably going to overcharge it thinking its old and kill it quickly.

But, people are people. I've read cases where people ignore it all thinking "I'm not going to let them rip me off and forget about registering. Good luck.

@Shark, weight distribution is a thing. Space is too. Sometimes the engine compartment is too cramped.

 
#236 ·
I've never taken any car to a dealer for normal / routine service and never will. Of course there is a way to do it yourself. (And as proven in the video on post 49) The only question is: What tool do you need to buy? What is the cheapest tool that will do the job?

Has anyone here changed their own battery? What tool did you use to register the new battery?

Autel 906 - $920 (used in video on post 49.)
iCarsoft Por II - $150 (maybe will work, maybe not? I see comments in both directions on various forums and threads.)
Foxwell Nt510 - $155 (Per their site, it will do it, but I'm not sure. It would be nice if someone who has used this tool can confirm if successful.)
Will other ones work? e.g. Autel MD806/8, Durametric Pro?
 
#242 ·
I have the iCarsoft and am also a DIYer. It works to reset the oil reminder so check the specs for the battery rest.

My '18 Macan records in its CPU when the services were done, as entered through the iCarsoft or similar device. It's important that you do that to maintain resale value.
 
#237 ·
And for those who DIY AND registered your new battery....What exact brand/model battery did you use & did it have a serial # that was accepted by the tool you used to register it?

Can't buy Varta AGM 92Ah in the USA. That is what came with my 2016 Macan Turbo. 4+ years & still working well but It will need replacement. $650+ for dealer to replace the battery is a joke. But may have to bend over if cannot find a good solution when the time comes.
 
#243 ·
My 2016 Macan S with 38,000 miles just lost the Auto Start/Stop function (though it is turned on) and my dealer blames it on the battery which has 69% life left. I have not been locking my garage while it is parked in the garage. I may start now as they quoted me $766+tax to replace. I would like to DIY and I too am looking for the answers. I'll go for a $200 tool if one exists.
 
#245 ·
Yes battery problems can cause myriads of problems.

The Start/stop module is controlled by 3 parameters which is why it's so difficult to disable permanently (for prior to 2020 models).

Start/stop is controlled by voltage, HVAC and Central Electric grouping in VAG-COM terms. If voltage drops below a certain value and fearing that the car may not start again, the system disables it. Similarly if temperature is too high or low, with climate (HVAC) running full blast, it will disable it to ensure the latter has enough power to keep climate control going. Lastly central electric or convenience module depending is a generic parameter control AFAIK. Switching that off by itself does nothing.

The reason Porsche (and Audi/VDub etc.) are so anal about making it difficult to disable this annoying feature is that a lot of their mpg data is derived using start/stop. If you disable this, some folks could claim that they (Porsche/VDub/Audi...) are cheating on the results again; well that's my take anyway.

Epilogue, and because of the wonderful VAG-COM tool (maybe in another lifetime someone will create something as good/cheap as Uwe Ross' analyzer for Porsche), I was able to disable the Start/stop on a 2018 Audi Q7 but only temporarily. As soon as you fuss with the temp control it resets, alas. Luckily the 2020 Macans since they're not considered a full revision version did not inherit this calamity as the Panamera, Cayenne etc did. However I'm pretty sure as of next year they will incorporate this "wonderful" feature.

siberian

PS I am not paid nor do I work for Ross-Tech btw, though I do have two Touaregs and an RS5
 
#246 ·
Auto start/stop can be disabled by pressing the button after you start the engine and it’ll stay off.

Luckily on my ‘15 Macan S I pressed the button at pickup and it stayed off for the last 4.5 years and will be in the future too.
 
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#247 ·
All that is required is to replace a battery! Should be a simple procedure not a $700 expenditure. This is why I sold my 2015 Macan Turbo at 43,000 miles. Looking to the near future at more expensive servicing, brakes and battery replacement, and my compulsive handling enhancements. Loved the car but I was turning it into an expensively modified performance fastback, departing from the engineers practical SUV/all purpose road car. Better to buy a car which already had the elements that fit my profile. I bought a used Mercedes AMG C63S that wasn't that much more subtracting my Macan trade in. I can replace the battery without having to sync it $$ with the system.
 
#248 ·
Most manufacturers whether Audi or Porsche or VDub etc. have gone to this "registration" ritual, I'm surprised that MB hasn't done something similar. Is it preparing the way for the 48v battery systems coming or simply another way to get more money out of folks, I don't know. But fully agree changing a battery being a 700 dollar expense is ridiculous as is a 20k expense to do a general 20k mile service on a Ferrari.

A lot of new technologies, such as the "eigenfrequency", on the RS5 is the answer to a non existent problem and a stupid inclusion of technology when the existing (TPMS) system worked perfectly well. But what you could monitor and be aware of and replace every 8 or 9 years for a pittance you now have no idea if you have a something wrong with your tire other than a message saying "your tire is flat".

Which is why I'm looking out for a reasonable 71 Cuda (383/426/440) manual that I can dive into an engine compartment and modify to my hearts content. I don't need Carplay or Sirius or having my comings and goings tracked so I can see the temp on my 11 inch dash either. But I hear you...just wish the car makers would as well

siberian
 
#254 ·
This is from September 3, 2019:

Good Afternoon,

Thank you for writing. The Durametric Software currently supports Porsche models through 2015. Support for newer models will be added with future software updates. However, no timeline for release is yet available.

The main difference between the Enthusiast and Professional kit is the supported number of VINs. The Enthusiast supports up to 3 VINs and the Professional supports unlimited.

Battery Registration is not currently supported by the software, this feature may be added in the future.

Windows XP is supported, however, a newer version of Windows is recommended.

Please let us know if you have any further questions.

Regards,

Kevin Lewis
Durametric Software Inc
888-854-5523


This is from Autel, re. 2020 Macan:



Hello


as of right now we do not have the software for that vehicle and the only scanners we have that can read that new of a vehicle once we have the software would be MS906BT


--
Technical Support | Autel North America
Office: 631.923.2620
Fax: 631.357.3304
Email: randrade@autel.com | Web: www.autel.com
175 Central Avenue, suite 200, Farmingdale, New York, 11735
Check out our latest AUTEL TOOLS CATALOG



siberian
 
#255 ·
This is from September 3, 2019:

Good Afternoon,

Thank you for writing. The Durametric Software currently supports Porsche models through 2015. Support for newer models will be added with future software updates. However, no timeline for release is yet available.

The main difference between the Enthusiast and Professional kit is the supported number of VINs. The Enthusiast supports up to 3 VINs and the Professional supports unlimited.

Battery Registration is not currently supported by the software, this feature may be added in the future.

Windows XP is supported, however, a newer version of Windows is recommended.

Please let us know if you have any further questions.

Regards,

Kevin Lewis
Durametric Software Inc
888-854-5523
They have been saying this for several years, but the Durametric does work for the maintenance registers on MY16 Macans. Several of us have used it successfully. And IIRC at least one MY17 owner did too.
 
#256 ·
Don't know why they would say this and thus loose a sale. But again I was asking about a 2020 not an earlier model beyond 2015.

What's their return policy? Is there any consensus as to which one (iCarSoft, Durametric, Autel or PIWIS) provides the most access for the buck?

siberian
 
#258 ·
Don't know why they would say this and thus loose a sale.
Suspect the answer simply is they have never tested it on anything newer than MY15, and, unlike some of their competitors, they tend to be cautious with what they claim.

Also, AFAIK no one else here has tried to use the Durametric for anything but the service registers on a Macan newer than MY15. Might be it's only partially compatible with newer Macans?.
 
#263 ·
Once we discover a device reasonably priced that will reset oil change nag screen & register new batteries....we need to know which specific batteries will work with the registration.
It is easy to find AGM batteries that will physically fit in the battery location & have = or better specs.
However, I wonder if these batteries will have a serial number that will be accepted?

For example the Varta battery may have a serial number with more or less digits vs. whatever battery we wish to replace it with.

I suppose a work-a-round might be to just reuse the serial # of the old Varta Battery or maybe add +1 to whatever the last number is? Make the Porsche computer think we put in a new Varta. Even though we put in a Bosche with more CCA?
 
#264 ·
Not sure how similar or dissimilar Porsche's battery registration process is to BMWs.

But I do have the distinct impression with BMW the battery serial number is merely to identify the battery. The technician is able to look at the battery replacement history of the vehicle and at least theoretically determine if the current battery in the vehicle was correctly registered. At least with BMW I strongly suspect the tool is not very fussy about the battery serial number, except possibly knowing how many digits it should have.

Can't say I know this for a fact, but I also suspect Porsche uses the battery serial number in a similar manner.
 
#265 ·
I'm sure you can find the list of "acceptable" batteries from PCNA.

I don't think the tool has much to do other than pass the info to the vehicle; meaning the tool doesn't accept or decline a battery; it's simply an interface. So as long as it has the required number of digits, as Wolverine stated, it won't complain unless the vehicle does. At that point the vehicle would pass that back as a function (retcode) to the tool, IMHO.

siberian
 
#266 ·
I've just sent email to Barnett Davies @ iCarsoft asking when the owners of the POR II devices can expect
the announcement of a firmware update that supports Macan battery registration.

Who will be next?

(strength in numbers!)


?
 
#274 ·
That is not the voltage. That is the output of the alternator.

I've assumed for our type of AGM battery the normal program would be correct except under 41 degrees.
I would not assume that at all. Do some research through all the forums and see what the consensus is, what people actually use. Here's a thread where someone actually called CTEK


 
#268 ·
Off- but not too off-topic-

Just had my new untitled SE delivered to me and checking the battery it was down to 12.2 volts by sitting in the lot and not being driven- so the electronics as everyone knows slowly drains the battery.

My question-- since the Macan uses an AGM- my Ctek 7002 gives me a choice of charge modes. I assume that I use the cold/AGM mode for charging. Ctek says to check with the battery manufacturer to be sure which model is correct.

The owner's manual does not make it clear if only an AGM specific charger should be used- but I am assuming that AGM on the 7002 would be best.

Any opinions?
 
#269 ·
The OM on my CTEK 4.3 says the Normal battery program is:
14.4V/4.3A. Use for WET batteries, Ca/Ca, MF, GEL batteries and many AGM batteries. 41ºF–122ºF (+5°C–+50°C)

It also says:
Cold weather program 14.7V/4.3A . Use for charging at low temperatures and for power AGM batteries like Optima and Odyssey. -4ºF–41ºF

So I've assumed for our type of AGM battery the normal program would be correct except under 41 degrees.
 
#271 ·
Which is exactly what I mentioned above.

It has nothing to do with the analyzer. The latter does not allow, nor verify whether a battery is valid or number is correct. It simply checks that it has the correct number of digits and passes this to the vehicle (if not you would have to update your analyzer every time a new manufacturer or serial number for a battery was issued). Alas we don't have anything near as sophisticated as a VAG-COM in Porscheland, but the approach is the same whether with iCarSoft, or Duramteric or other

siberian
 
#275 ·
A couple of comments here from my experiences with CTEK, Durametric, Porsche and BMW battery changes. First, my CTEK is used in the "14.7V/4.3A" mode at all times with my MY 2015 Macan S with an Interstate H8 replacement AGM battery.. No problems whatsoever. Second, I have used a Durametric unit for a decade on my Porsches. A great investment for both diagnosis and clearing fault codes as well as annoying "nanny" notices about time/mileage maintenance messages. The Durametric unit does not do battery management and, from my discussion with Durametric support, they appear to have no intention of adding such a function at this time.

Third, as I have commented on this forum several times, I bought an iCarSoft Porsche V2.0 last spring because it was advertised to do battery management on a Macan. I got it, set it up, and it failed to deliver on the Macan, despite what Barnett Davies had told me. I sent it back and got a refund. I had my indie replace the original Varga and register the new Interstate battery ($400).

Finally, a comment on replacing BMW batteries, a much more transparent process than with Porsches. For less than $100, one can buy an OBDII cable and software to use with an old laptop to do the battery management on a BMW. With a tool program called "NCS Expert", one can "code" a new battery if is not exactly the same as the battery being replaced. For example, one may be going from a 80Ah lead acid battery to a 90Ah agm battery (that I have done). The program tells the ecu of the battery change so charging changes can be implemented appropriate to the battery requirements (prevents over- or undercharging). Then a program named "Tool32" is used to "register" the new battery. This records time, etc. of the replacement so that charging appropriate to the in-duty time of the battery is maintained for optimal battery efficiency and life. There is no need to look for any special decal or icon on the new battery. The only thing needed for this process is the Ah rating for the battery and if it is an AGM or lead acid battery.

It seems that Porsche does everything they can do to monetize everything they can to cause Porsche owners to go to their dealerships for service. Maybe not a bad business plan.
 
#277 ·
Shark-- I decided that Porsche would install an AGM battery that would be closer in design/quality to the Optima which has always portrayed itself as a premium AGM battery. 50/50 choice so I picked the 14.7V snowflake mode.

It is taking a good amount of time to get up to full charge-- sitting in a dealers' lot for weeks waiting to be sold has really drained this battery. I am detailing it in my garage which will take a few days so not driving it- great time to get the battery up to snuff.
 
#278 ·
Is the battery only $200-300?
 
#281 ·
I might be wrong. This is a cut&paste from a thread:

"I have an update. I emailed both Autel and iCarsoft customer service. I asked about the 2019 / 2020, but assume the answers would be similar for earlier years as well.
Autel: The Autel MD808 Pro (available here for $233) does support Battery Management System, and allows you to register the new battery on a Macan. This is per Andrew Libert @ Autel
iCarsoft: The older iCarsoft Por II does not support BMS. However, the iCarSoft V2.0 (available for $146 here) does allow you to register the new battery on a Macan. This is per Barnett Davies @ iCarSoft.

So, it sounds like there are at least 2 reasonably-priced tools which allow you to reset the battery on a Macan for DIY people (like me). :) If anyone on this forum ever does it successfully (or tries it unsuccessfully), please add to this thread!"

Sorry bout that. Guess it does...
IIRC we eventually found out neither of these actually work on a Macan.
Well then I take back my take back. Or something like that. Bottom line, I was correct in my initial spin on this. Thanks for the update Shark!
 
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#282 ·
I live in So California and drive my Macan at least every other day but I'm curious if anyone here would recommend I get a CTEK (MUS 4.3? Snowflake mode?) and try topping it off routinely, just to see if I can get some extra life out of my battery...until we come up with a solid DIY solution here. CTEK owners, any thoughts?
 
#284 ·
I only drive my Macan on weekends but I always give it a good run on the highway and never needed a trickle charger in the last 4.5 years.
 
#285 ·
Wondering if it’s a HW limitation....


Thanks for your email.

Please note that POR II can't support battery.

You need the new released version POR V2.0.

Please let me know if you have any questions.



ThanksSincerely,
Barnett Davies,
USA Headquarters
Sales Engineer / Order Center


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