[928uk] "Save Power - Service" warning message

[Paul R Smith]

I think your diagnosis is probably correct, but before you splash out a 
new battery, check the voltage when the engine is running to make sure 
the alternator is charging  the battery properly.
If it hadn't just been serviced, hopefully the flexplate/thrust bearing 
wear has just been checked.

Smiffy

On 28/09/2019 19:35, Alistair Stanford via 928uk wrote:
> Subject:
> "Save Power - Service" warning message
> From:
> Alistair Stanford <microcomali at gmail.com>
> Date:
> 28/09/2019, 19:35
> 
> To:
> 928uk at lists.928.org.uk
> 
> 
> Hi all,
> 
> I got this warning light/message come up today after a short 10 mile 
> drive and trying to start after sitting for 2 hours.
> 
> After leaving the car for the two hours went to start it and although 
> the engine turned and got to 500 rpm it didn't catch. Tried two more 
> times before it stopped turning completely. Left it for 5 mins and then 
> tried again, it caught and settled to a regular idle and all ok. Went 
> for a blast on the motorway for 40 miles to make sure it was all ok.
> 
> It's been sat on the drive with a battery conditioner since returning 
> from its annual service with Paul two weeks ago. After the 10 mile drive 
> I left it and the cooling fans were still whirring away, which it never 
> previously did once the ignition key was removed.
> 
> So thinking I've got a weak battery and the fans sucked quite a bit of 
> charge and the battery would have had a full charge with the 
> conditioner. Any other suggestions or thoughts on this warning light as 
> it's always started on the button previously?
> 
> Best wishes,
> 
> Alistair
> 89 S4

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