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2004 Cayenne V6 transmission issues

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Old 07-14-2024 | 08:42 AM
  #16  
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Originally Posted by Jfrahm
The jump pack idea is decent but we don't know if it'd crutch a bad starter that's causing a big drain or something.
Load testing the battery might be the next step, I have had some that charge up nice but faceplant under load. A shop might have a load tester they can put on it quickly. If you have the power liftgate that can be used as a load test.
However your "buy a battery" idea is likely reasonable. Unfortunately they are big batteries and expensive. I appreciate the voltage data.
Just to provide an update, my partner took the car out for some chores on Friday and when she came back everything was working as it should apart from an orange exclamation mark! I checked the warnings on the dashboard menu and nothing, scanned the car and no new faults but the four wheel drive was working and no slow cranking on start up - I couldn't believe it! She could well be a Witch. However, I took the car to my local Halfords Autocentre where they load tested the battery and found it was 33% at capacity so this morning I bought and installed a new battery. I'll put the link below (for anyone interested) but I got a Yuasa 020 5000 series that is 110ah and 950cca and paid £120, which I felt was good value compared to other quotes I received of £250-£350.

After installing the new battery, the traction light appeared on the dash (I'm literally crying at this point now!) but I took it out for a quick drive and it soon disappeared. I must say, with a new battery, it's like a whole new car! Throttle response is better and no "four wheel drive system faulty" so for now this seems to be fixed (touch wood). I'll update in a weeks time just to confirm it's still good but huge thank you for everyones help!

Now to try and sort the hand-brake shoes that are scraping the onside rear!

https://www.gsfcarparts.com/parts/ca...xoC5vwQAvD_BwE
Old 07-15-2024 | 09:28 AM
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Thanks for the follow-up! Sounds like we need to remember to load test batteries and replace them if they get even a little bit iffy.
Old 10-22-2024 | 10:56 AM
  #18  
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Default 2006 Porsche Cayenne 3.2 won't shift gears in the mornings

Originally Posted by Jfrahm
Simply sounds like a dying battery but you should check to see if it's charging properly before just replacing the battery and then later finding out it might have been OK if the alternator was doing it's job.
I would assume the V6 does not have the 2nd battery in the spare tire area but it's worth checking anyway, as well as checking the spare tire, tools, etc.
https://rennlist.com/forums/cayenne-...d-battery.html

Having a cheap electrical meter in the car is good, but the dash gauge might show enough to determine if it needs a battery, alternator (maybe just a voltage regulator) or both.
I've been having having a problem with mines every since I bought her. Please could someone help me out. It starts every morning it won't change gears. I mean it goes but won't change gears. Like I had to stop put it on park turn it off and back on and set to drive and it's runs good all day after that. I already had the transmission valve body replace and that did not help, also did the transmission replace and nothing so I went ahead and did the TCM transmission control module and no luck. I really don't know what else could it be????? Please someone help me!!! I beg
Old 10-22-2024 | 11:46 AM
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With mine, it ended up being the wheel speed sensor that was causing it not to change gear. Have you had it on a diagnostic machine to see if your receiving signal from all the wheel speed sensors?



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