Long cranks in cold mornings

[autoque]

I have a 3.0 gasoline and when I push a start/stop button I have to wait for about five cranks to be able to start the vehicle when it's cold. And the car sounds like the engine just doesn't want to turn on at all. This doesn't happne when the car's warmed up though. Any ideas?

[motordavid]

Cold as in North Dakota cold or, Tampa cold?

Battery would be my first pick...
GL,mD

[autoque]

I park in a basement parking lot, so I'd say around 25~30 degrees Fahrenheit or -5~0 degrees Celsius. I very recently changed my battery to a new 90 amp battery at a dealer, so I don't think it's battery related.

[autoque]

Any ideas?

[London Lad]

All engines tend to crank longer when cold.

Changing to a bigger battery will not help if you are not driving enough to charge it.

Is the battery fully charged ?

[autoque]

I think so. The battery was newly replaced less than a month ago.

I heard somewhere that longer cranks have something to do with low pressure in injectors or something. That's why I was worried.

[London Lad]

I would be inclined to give the battery a full (overnight) charge before you do anything else. New batteries don't necessarily come fully charged and if you don't do long runs they will never get fully charged.

[cr.724]

Don't mean to worry you, but long cranks were the tell-tell signs of the high pressure fuel pump failing on my wife's 535xi.

[autoque]

I park in a basement where there's no power outlet...
When the dealer tested the battery, the paperwork said the new one was charged 106% whereas the old battery was around 40.

cr.724, what happens when the high pressure fuel pump fails? Engine malfunction?

[cr.724]

Eventually, yes, you get the old engine malfunction notice, with all the bells and lights.