PSM Failure / just changed battery?

[SamanthaHewit]

If you have just changed your car battery (possibly applies to charging a really really dead battery too), you might get a warning message saying PSM FAILURE.

Dont worry, this goes out after you go for a little drive.

This information might save you panicking like i did earlier today!

xoxoxox

 

[Nick_USA]

ORIGINAL: SamanthaHewit

If you have just changed your car battery (possibly applies to charging a really really dead battery too), you might get a warning message saying PSM FAILURE.

Dont worry, this goes out after you go for a little drive.

This information might save you panicking like i did earlier today!

xoxoxox

and did you also reset your windows ? [&:]

 

[SamanthaHewit]

actually my windows were ok, they just sorted themselves out. ALthough they did drop a few times when the battery was dying

 

[BartyB]

In my experience, a dying battery (<11V) can also cause: spoiler raising; dash lights coming on and staying on even with the ignition key removed; and alarm triggering. As a personal observation, Porsche branded Moll-sourced batteries seem to be particularly prone to early failure. A.

 

[SamanthaHewit]

I heard that batteries for my car were supposed to be expensive but mine was only £85 i dont think thats expensive at all

 

[Nick_USA]

ORIGINAL: SamanthaHewit

I heard that batteries for my car were supposed to be expensive but mine was only £85 i don't think that's expensive at all

That would depend on if you fitted a Porsche branded one or not.

 

[SamanthaHewit]

Whats the difference? The new one looks the same as the old one, and the numbers are the same too.

 

[Nick_USA]

ORIGINAL: SamanthaHewit

Whats the difference? The new one looks the same as the old one, and the numbers are the same too.

Sorry, where did you get the battery from?

 

[SamanthaHewit]

I got it from my local europarts shop

 

[Motorhead]

ORIGINAL: SamanthaHewit

Whats the difference? The new one looks the same as the old one, and the numbers are the same too.

Porsche only approve/fit the dreaded MOLL battery and won't tolerate the fitment of any other battery if the vehicle is covered by their warranties (original or Porsche Approved).

Presumably yours is a Bosch, Exide or Varta battery; most likely a superior product compared with the original fitment.

Jeff

 

[SamanthaHewit]

Thats what the man in the shop said, he reckons that Porsche batteries being smaller make them more susceptible to failure. I got a 3yr warantee with my new battery too.

The strange thing with my battery failure is that i never once got an error message on my dashboard. I get them whenever a door is open or if a bulb is gone or if there is an engine fault, but not for battery dying... I would have thought that would be an easy one to create an error message for?!?

 

[Motorhead]

I'm not sure about Porsche batteries being smaller Samantha - the battery in my Cayman's a 120Ah monster.!

And yes, you'd have thought that it would be fairly straightforward to sense a consistent battery low voltage fault. However, the logic would have to trap out voltage drops when starting, turning on lights, etc., otherwise the fault light would be a permanent feature on the display..!!

Jeff