Flattish Battery

[DH01]

Went to start the car this morning, it tried to turn over but not enough juice in the battery to start it, bogger !
The ammeter dial on the dash has been showing a constant 14v on recent journeys, hopefully the alternator is OK. The battery is less than a year old, should be OK. The car has only been left for 3 days.
Where to start looking before I take it to the garage and get bent over ?
2004 Cayenne 4.5S

Any thoughts please ?

[mm450exc]

Put it on the charger for 24hrs.

My battery is a few month old and it took 18hours to fully charge. Have not driven it a lot recently.

[pete.g]

If the battery is fully charged, you should also check the condition of the lead from the battery to the starter motor; deterioration/corrosion of the power feed can lead to a struggle starting and if it is OK, the starter motor itself.

[DH01]

Unlikely I'll be able to trace the cable from under the passenger seat to the starter motor at the roadside . Looks like I'll be off to the garage .

Thanks for the replies.

[pete.g]

DH01 said:

Unlikely I'll be able to trace the cable from under the passenger seat to the starter motor at the roadside . Looks like I'll be off to the garage .

Thanks for the replies.

Just connect a jump lead from the battery straight onto the positive terminal on the starter - if it starts first turn, then the cable is at fault.

[Magic919]

DH01 said:

The ammeter dial on the dash has been showing a constant 14v

Any thoughts please ?

That makes it a volt meter. An ammeter would read .... Amps.

[DH01]

Thanks Pete g.